英语从句详解

英语八大从句类型总结
从句是复杂句的一种重要组成部分，它可以在句子中起到名词、形容词或副词的作用。

根据从句的功能和结构，英语语法中总结出了八种常见的从句类型。

本文将对这八大从句类型进行详细总结和解析。

1. 名词性从句
名词性从句在句子中可以充当主语、宾语、表语或同位语。

常见的名词性从句包括主语从句、宾语从句、表语从句和同位语从句。

名词性从句常以“that”引导，但也可以使用连接词如“if”、“whether”、“who”、“what”等。

例如：
- 主语从句：That he was late for the meeting was not surprising.（他迟到会议并不出人意料。

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- 宾语从句：I don't know where he is going.（我不知道他要去哪里。

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- 表语从句：The important thing is that we try our best.（重要的是我们尽力去做。

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- 同位语从句：The fact that he passed the exam is a great relief.（他通过考试是一件大解脱的事实。

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2. 定语从句
定语从句用来修饰名词或代词，并提供更多的信息。

定语从句通常由关系代词（如\。

英语三大从句在英语中,主要有三大从句,即名词性从句包括主语从句,宾语从句,表语从句,同位语从句、形容词性从句即定语从句、副词性从句即状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式等;定语从句一、关系代词引导的定语从句关系代词代替前面的先行词,并且在定语从句中充当句子成分,可以作主语、宾语、定语等;常见的关系代词有：who, that, which;它们的主格、宾格和所有格如下表所示：一关系代词who, whom和 whose的用法who代替人,是主格,在定语从句中作主语;An architect is a person who designs buildings. 建筑师是设计房屋的人;whom代替人,是宾格,在定语从句作宾语,在非正式英语常可省略;Do you know the gentleman whom we met in the school library yesterday 昨天我们在学校图书馆里遇到的那位先生你认识吗whose一般代替人,有时亦可代替物,是所有格,在定语从句作定语; The girl student whose father is a senior engineer used to study abroad. 其父是一位高级工程师的那个女学生过去在国外留学;Do you know the name of the hotel whose window we can see here 我们这儿能看到窗户的那个宾馆叫什么名字,你知道吗关系代词whose指代先行词hotel,正式用法应该用of which;whose window=the window of which,意思是：the window of the hotel; 二关系代词which的用法which代替物,在定语从句作主语或宾语,作宾语时还可省略;I do not like stories which have unhappy endings.我不喜欢有不幸结局的小说;which可以换成that三关系代词that的用法that既可指人又可指物,在当代英语中大多指物,在定语从句作主语或宾语,作宾语时还可省略;：Is she the girl that sells newspapers她是卖报纸的那个女孩吗that可以换成whoWhere is the ice-cream that was in the fridge放在冰箱的冰激凌哪儿去了that可以换成whichIs this the book that you want to buy这是你要买的那本书吗 that可以换成which,在定语从句作宾语,还可以省略二、关系副词引导的定语从句常用的关系副词只有三个：when, where, why,在定语从句中充当时间、地点和原因状语;一关系副词when的用法关系副词when代替的先行词表示的是时间,when在定语从句作时间状语;In Beijing July and August are the months when it rains very often.北京的七月和八月是常下雨的月份;when先行词是months二关系副词where的用法关系副词where代替的先行词表示的是地点,where在定语从句作地点状语;During the Spring Festival I went back to the town where I was brought up.春节期间,我回到了生我养我的家乡;where的先行词是town三关系副词why的用法关系副词why代替的先行词表示的是原因,why在定语从句作原因状语;The reason why I am phoning you is to ask you whether you have got my email.我打电话给你的原因是想问问你是否收到了我的电子邮件;why先行词是reason, 当代英语里why可以用that替代,这时关系代词that 就变成了表示原因的关系副词,还可以将why省略三、特殊关系代词as引导的定语从句一在固定搭配as…as, so…as, such…as, the same…as中,as引导定语从句You may take as many books as you want.你想要拿多少书就拿多少;第一个as是副词,修饰many的；第二个as才是关系代词,代替先行词books,在定语从句中作宾语二独立于主句之外,as引导定语从句As we know/ As is known to us, the earth turns around the sun. 正如我们所知,地球围绕太阳旋转;As we know和 As is known to us均为定语从句,as分别作宾语和主语,替代后面的主句;Taiwan is, as you know, an inseparable part of China.你知道,台湾是中国不可分割的一部分;关系代词as指代整个主句,在定语从句中作宾语;四、关系代词who, which与that的区别一关系代词who与that的区别1. 当关系代词用作主语时,多用主格who;He who loses hope loses all.失去希望的人就失去一切;先行词为代词he, they, any, all, one 等时,多用whoI met Alice, who told me that she was learning Chinese.我遇见艾丽斯,她告诉我她在学汉语;在非限制性定语从句中,用who 2. 当关系代词用作介词后的宾语时,用宾格whom,不用that;The man to whom our headmaster talked just now is our English teacher.我们校长刚才与他谈话的那个人是我们的英语老师;介词与关系代词紧密相连时,只能用宾格whom,不可用主格who注意：介词与关系代词不是紧密相连时,或者说介词放在句子后面时,这时可以用主格who,也可用that,还可以省略关系代词;因此,上面的这句话还可以有如下四种说法：1 The man whom our headmaster talked to just now is our English teacher.2 The man who our headmaster talked to just now is our English teacher.3 The man that our headmaster talked to just now is our English teacher.4 The man our headmaster talked to just now is our English teacher.3. 当关系代词泛指人时,多用that;He is a man that is never afraid of failure.他是个从不怕失败的人;that用来泛指人4. 当关系代词出现在who开头的疑问句时,应用that;例如：Who is the girl that is talking to Tom in English用英语同汤姆交谈的那个女孩是谁避免重复使用who,以免造成误解或语义含混不清二关系代词which与that的区别1. 当先行词为all, much, little以及不定代词anything, something, everything等时,关系代词多用that;All that glitters is not gold. 闪闪发光物,未必尽黄金;She told me everything that she knew. 她把她所知道的一切都告诉了我;2. 当先行词的前面有形容词最高级、序数词或限定词the only, the very, all, every, any, no等时,关系代词一般都用that;This is the best novel that I have ever read. 这是我读过的最好的一部小说;He is the only person that has been invited to the ball. 他是惟一应邀参加舞会的人;3. 当关系代词出现在which开头的疑问句时,应用that;Which was the hotel that was recommended to the foreign guest 哪一个是推荐给外宾的宾馆这里使用that很明显是为了避免重复which4. 在非限制性定语从句中,关系代词一般只用which;Beijing, which is the capital of the People’s Republic of China, will host the 2008 Olympic Games. 北京是中华人民共和国的首都,将主办2008年奥运会;5. 介词后的关系代词用which,而不用that;She has collected 600 stamps, 60% of which are German stamps. 她收集了600张邮票,其中60％是德国邮票;五、定语从句的位置如前所述,定语从句一般总是直接置于所修饰的名词或代词之后;有时候,定语从句与先行词之间插入了其他的短语,这样它们被分隔了,这种情况下的定语从句被称作隔离定语从句;There was a girl upstairs who was shouting and crying, obviously mad.楼上有一个女孩,大喊大叫;很明显,她疯了;定语从句who was shouting and crying修饰the girl,被upstairs所隔开A new master will come tomorrow who will teach you German. 明天要来一位新老师教你们德语了;定语从句置于句末以示强调名词性从句宾语从句一、引导词1由that 引导的陈述句性的宾语从句,在很多动词如say, think, wish , hope, see, believe, agree, expect, hear , feel等动词后;连词that只起连接作用,在从句中不做句子的成分,也无词汇意义,在口语中常被省略;如：I told him that he was wrong.在think, believe, suppose, expect等动词引起的宾语从句中,有时谓语尽管是否定意义,却不用否定形式,而将think 等动词变为否定形式;见语法：否定转移如：I don’t think you are right. 我认为你做的不对在许多带有复合宾语的句子中,that引导的宾语从句经常移到句子的后面,而用it做形式宾语;We think it wrong that he told a lie to everyone 我认为他向每一个人撒谎是错误的2 由连词if、 whether 引导的表示“是否…”的宾语从句; Whether, if 在从句中不做句子的成分,一般情况下,whether和if 可以替换;I don’t know if/whether he will come tomorrow.在介词后面的宾语从句中不用if引导Everything depends on whether we have enough money.宾语从句中有or not时不用if引导.I don’t know whether the movie star will come or not.和不定式连用作宾语时不用if引导Whether to go there or not hasn’t been decided.3由wh-引导的宾语从句;连接代词who, whom, whose, what, which 和连接副词when, where, why, how 等连接的宾语从句,它们在句中即有连接从句的作用,又在句中充当句子的成分;Do you know which film they are talking about which做定语I don’t know where he lives. where 做地点状语二、宾语从句的语序,宾语从句的语序必须是陈述语序,既连接词+主语+谓语+其他成分 I believe that they will come soon.特例：有下列常见的问句,作为从句出现,是“不改变语句顺序”的;1. What's the matter2. What's wrong3. What's up4. What's the problem5. What's your trouble三、宾语从句的时态;宾语从句的时态受主句的限制,即：主句是一般现在时态,从句根据实际情况而定；主句是一般过去时态,从句用相应的过去的时态;如果从句的动作发生在主句之前,则从句要用过去完成时态;1 She says that she is a student.→ She said that she was a student.2She says that she will fly to Japan in a week. → She said that she would fly to Japan in a week.3She says that she has finished her homewor k already. → She said that she had finished her homework already.1如果宾语从句说的是客观真理、自然现象或事实时,这时宾语从句要用一般现在时态;The teacher said that the earth goes round the sun.2Could you tell me…是用来征询对方的意见,语气委婉,并不表示过去;Could you tell me when we will visit the History Museum注意事项：3由陈述句变成宾语从句时,要注意人称的变化;She said: “I have been to England before.” → She said that she had been to England before.She asked me: “Do you like maths” → She asked me if I liked maths.4宾语从句与简单句的交换;由连接代词和连接副词引导的宾语从句,如果宾语从句的主语和主句的主语是同一个人时,可以用“疑问词+不定式”做宾语的简单句结构;I don’t know what I should do next. → I don’t know what to do next.DO SOME EXERCISES:1.Can you see AA. what he’s readingB. what is he readingC. what does he readD. he reads what2. Does Jack come from Japan Do you know合并成一个句子Do you know ___that__Jack __come___from Japan3._What did your son say in the letter_He told me that he_D__ the Disney the next day.A. will visitB. has visitedC. is going to visitD. would visit4. He didn’t know___A____A. what’s the matterB. what the matter isC. what was the matterD. what the matter was5. Somebody called you just now, but I didn’t know__D__A. who were theyB. who they wereC. who was itD. who it was6. I want to know___D__A. what is his n ameB. what’s his nameC. that his name isD. what his name is7. ---Could you tell me __C__she is looking for---Her cousin, Susan.A. thatB. whose C .who D. which8. ---What are you searching the Internet for---I’m trying to find out____.A. What is the difference between SARS and BIRDFLUB. How many persons have died in IraqC. How to protect our environmentD. Why is our Chinese team be able to beat Korea同位语从句一一般来说,在主从复合句中,用作同位语的从句叫同位语从句;它通常跟在某些名词之后,用以说明或解释该名词表示的具体内容;可以跟同位语从句的名词通常有：advice, decision, fact, hope, idea, information, message, news, promise, proposal, reply, report, suggestion, word消息,problem, question, doubt, thought等; eg: They were delighted at the news that their team had won.当听到他们队获胜的消息时,他们欣喜若狂;有时同位语从句可以不紧跟在被说明的名词后面,而被别的词隔开; 如：The thought came to him that Tom might have returned the book. 他突然想起汤姆可能已经还了书了;二引导词1. The news that Mr. Li will be our new English teacher is true.2. He hasn’t made the decision whether he will go there.3. The question who should do the work is being discussed at the meeting.4. I have no idea what the boy is doing in the next room now.5. We haven’t yet settled the question where we are going to spend our summer vacation this year.6. I have no idea how I can get to the railway station.7. I have no idea when he will be back．小结：① that引导同位语从句时无词义,也不充当任何成分,但通常不可以省略,如句1；② whether引导同位语从句时意为“是否”,通常不能用if来代替, 如句2;③ 连接代词who, what等可以引导同位语从句,如句3, 4；④ 连接副词where, how, when等可以引导同位语从句, 如句5,6,7;三 that 引导的同位语从句和定语从句① 意义不同：同位语从句用来进一步说明前面名词的内容；而定语从句用来修饰、限定前面的先行词;试比较：1. The news that our team has won the final match isencouraging.2. The news that you told us is really encouraging.② that的功能不同：that引导同位语从句时是一个纯连词,不充当任何成分；而引导定语从句时,不仅起连接作用,而且还指代先行词并在从句中充当主语、宾语等成分;试比较：1. Dad made a promise that he would buy me a CD player ifI passed the English test.2. Dad made a promise that excited all his children.③ 可否省略：that在引导同位语从句时,通常不可省略;在引导定语从句时,若在从句中作宾语,通常可以省略,若作主语则不可以省略;DO SOME EXERCISES:I. 请用适当的词填空,使下列句子意思完整;1. They expressed the hope _that_ they would come over toChina soon.2. The fact ___that____ he didn’t see Tom this morning istrue.3. Word has come __where_____ some American guests will cometo our college for a visit next week.4. He can’t answer the question ___how____ he got the moneyfrom his home yesterday.5. Do you have any idea __what___ is actually going on inthe classroom6. The problem _______ we should have the meeting in the hallnow must be decided at once.II. 下列各句中均有一处错误,请改正;1. Our team has won the game, that made us very happy.2. I’ve come with a message from Mr Wang how he won’t beable to see you this afternoon.3. He must answer the question if he agrees with what shesaid or not.4. I’ve read the book where you gave me the day beforeyesterday. 5. One of the men held the opinion when what the book said was right.表语从句表语从句只能置于主句之后,而主句的动词只能是连系动词;名词性从句在be等系动词后作表语时被称为表语从句The problem is how we can get the things we need.问题是我们怎样能弄到我们需要的东西;how 在表语从句中充当方式状语The scissors are not what I need. 这把剪刀不是我所需要的;what 在表语从句中充当宾语What I told him was that I would find him a good play. 我告诉他的是我会给他找个好剧本;what在主语从句中作直接宾语, that 作为表语从句的引导词在该表语从句中不充当句子成分, 不能省略That is what I want to tell you.那就是我想要对你讲的;what在表语从句中充当直接宾语That is why she failed to pass the exam. 那就是她考试不及格的原因;why 在表语从句中充当原因状语“That is why...”是常用句型, 意为“这就是……的原因/因此……”, 其中why引导的名词性从句在句中作表语, 该句型通常用于针对前面已经说明过的原因进行总结下面是两个与“That is why...”形式相似的结构, 它们与“That is why...”结构之间的关系要能够辨析清楚：1“That is why...”与“That is the reason why...”同义, 只不过从语法结构上讲, “That is the reason why...”中why引导的是—个定语从句, 将其中的the reason去掉则与“That is why...”结构一样 That is the reason why I cannot agree.2“That is because...”句型中从属连词because引导的名词性从句在此作表语, 这也是个常用句型, 意为“这就是为什么……/因为……”;“That is because...”与“That is why...”之间的不同在于“That is because...”指原因或理由, “That is why...”则指由于各种原因所造成的后果He did not see the film last night. That is because he had to help his little sister with her homework.昨天晚上他没有去看电影, 那是因为他得帮助他的妹妹做作业;第一句话说明结果, 第二句话说明原因He had seen the film before. That is why he did not seeit last night.他以前曾看过那部电影, 因此他昨天晚上没有去看;第一句话说明原因, 第二句话说明结果考题1The traditional view is ____ we sleep because our brain is “programmed” to make us do so. 2007上海A. whenB. whyC. whetherD. that考题2You are saying that everyone should be equal, and this is ____ I disagree. 2004A. whyB. whereC. whatD. how考题3— I drove to Zhuhai for the air show last week.— Is that ____ you had a few days off 1999A. whyB. whenC. whatD. where考题4____ made the school proud was ____ more than 90% of the students had been admitted to key universities. 2003上海春A. What; becauseB. What; thatC. That; whatD. That; because考题5—Are you still thinking about yesterday’s game—Oh, that’s ____. 2003北京春A. what makes me feel excitedB. whatever I feel excited aboutC. how I feel about itD. when I feel excited 表语从句与宾语从句的关系宾语从句和表语从句都属于名词性从句;其作用跟名词在句中的作用相同;故充当宾语的句子叫宾语从句,充当表语的句子叫表语从句;宾语从句1对于宾语从句要掌握以下三点①语序: 从句的语序必须是陈述句语序, 即“主语 + 谓语”这种形式;②时态: 当主句是一般现在时或一般将来时的时候, 从句可以是任何时态, 而当主句是一般过去时的时候, 从句时态必须是过去时范围的时态, 即一般过去时, 过去进行时, 过去完成时, 过去将来时;③连接词: 当从句意思完整, 主句意思肯定时, 连接词用that, 且可以省去当从句意思完整, 主句意思不确定或含否定含意时, 常用if或whether是否当从句意思不完整时, 连接词则是代替不完整部分的特殊疑问词;表语从句在句子中起表语作用的从句叫做表语从句,位于主句系动词的后面;表语从句的引导词和主语从句的引导词相同;也是名词性从句的一种;What the police want to know is when you entered the room.警察想知道的是你什么时候进的房间;The trouble is that we are short of funds困难是我们缺乏资金; This is what we should do这是我们应当做的;That is why I want you to work there那就是我要你在那儿工作的原因;His first question was whether Mr. Smith had arrived yet他的第一个问题是史密斯先生到了没有; 从句中的疑问句用正常语序,即陈述语序;as if, as though, because也可用来引导表语从句;She seems as if she had done a great thing她看起来好像做了一件大事;It is because you eat too much那是因为你吃得太多了;状语从句一状语从句的种类1.时间状语从句2.地点状语从句；3.原因状语从句；4.条件状语从句；5.目的状语从句；6.让步状语从句；7比较状语从句；8.程度状语从句；9.方式状语从句；10.结果状语从句;二状语从句的时态一般情况下,时间和条件状语从句的谓语动词一般用“一般现在时”表示“一般将来时”,用“现在完成时”表示“将来完成时”;1时间状语从句1.由when, while, as引导的时间状语从句;when, while和as的区别：when引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词;并且when有时表示“就在那时”; While引导的从句的谓语动作必须是延续性的,并强调主句和从句的动作同时发生或者相对应;并且while有时还可以表示对比;While my wife was reading the newspaper, I was watching TV. As表示“一边……一边”,as引导的动作是延续性的动作,一般用于主句和从句动作同时发生；as也可以强调“一先一后;As we was going out, it began to snow.当我们出门时,开始下雪了;as强调句中两个动作紧接着先后发生,而不强调开始下雪的特定时间2.由before和after引导的时间状语从句;before引导的从句不再用否定式的谓语,并且当before引导的从句位于主句之后,有时译成“就,才”; 时态：当主句用将来时,从句总是用现在时；如果before引导的从句谓语用的是过去时,则主句动词多用过去完成时,这样以便体现动作发生的先后;After表示主句动作发生在从句动作之后;主句和从句的动作的时间关系正好与before引导的从句相反;3.由till或until引导的时间状语从句;till和until一般情况下两者可以互换,但是在强调句型中多用until;并且要注意的是：如果主句中的谓语动词是瞬时动词时,必须用否定形式；如果主句中的谓语动词是延续性动词时,用肯定或否定形式都可以,但表达的意思不同;4.由since引导的时间状语从句;since引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词;一般情况下,从句谓语动词用一般过去时,而主句的谓语动词用现在完成时;但在It is ＋时间＋since从句的句型中,主句多用一般现在时;5.由as soon as, immediately, directly, instantly, the moment, the instant, the minute, 等引导的时间状语从句;这些连词都表示“一……就”;hardlyscarcely, rarely…when / before, no sooner…than 相当于as soon as之意;主句用过去完成时,从句用一般过去时;当hardly, scarcely, rarely和no sooner位于句首时,主句应用倒装语序;6.由by the time引导的时间状语从句;时态的变化：在一般情况下,如果从句的谓语动词用一般过去时,主句的谓语动词用过去完成时；如果从句的谓语动词用一般现在时,主句的谓语动词用将来完成时;7.由each time, every time和whenever引导的时间状语从句;8.由as long as和so long as引导的时间状语从句;这两个连词表示“只要；和…一样长”;2地点状语从句地点状语从句一般由连接副词where, wherever等引导,已经形成了固定的句型,：句型1：Where＋地点从句,there＋主句;此句型通常译成“哪里……哪里就……”；主句在从句后面时,there 可用可不用；如果主句在从句的前面时,一般都不用there;句型2：Anywhere/ wherever＋地点从句,＋主句;状语从句是句子的状语由一个从句充当,来修饰主句中的动词,形容词或副词等;状语从句都由从属连词引导,与主句连接,放在句末时,一般不在前面加逗号;3原因状语从句： because, since, as和for都表示原因;because 语势最强,回答why提出的问题,用来说明人所不知的原因;当能够很明显的看出原因或人们已知原因,就用as或since;由because引导的从句如果放在句末,且前面有逗号,则可以用for来代替;但如果不是说明直接原因,而是多种情况加以推断,就只能用for;4目的状语从句：表示目的状语的从句可以由in order that, so that,等词引导;5结果状语从句：结果状语从句常由so...that 或 such...that引导,首先要了解so和such后面分别跟什么词;such是形容词,修饰名词或名词词组,so是副词,只能修饰形容词或副词;so 还可与表示数量的形容词many, few, much, little连用,形成固定搭配;The box is so heavy that I can't carry it.6让步状语从句：是由though, although 引导的状语从句;。

英语八大从句类型总结总结就是对一个时期的学习、工作或其完成情况进行一次全面系统的回顾和分析的书面材料，它可以促使我们思考，为此我们要做好回顾，写好总结。

总结你想好怎么写了吗？下面是小编收集整理的英语八大从句类型总结，欢迎阅读与收藏。

英语八大从句类型总结11.时间状语从句（1）When---当……时候,通常指某一特定的时间点，主句与从句的动作同时发生。

（2）When---正在……的时候，突然…。

通常主句是进行时或be about to时，在翻译的时候，when可以译成没想到或突然。

（3）When当从句是进行时，主句是一般时，往往表示不满。

（4）When=after（5）While---在……期间，往往指一段时间。

（6）While---表示一种不满情绪，意思是这边在干某种重要的事，而另一边在享受等。

（7）As---一边……一边,随着（8）The moment---一……就……=as soon as,immediately,2.条件状语从句引导状语从句的连接词有：If如果,unless除非,as long as只要,As(so)far as---据……所知，incase万一,provided that假如,on condition that若是，以…为条件。

3.地点状语从句地点状语从句只有两个连词:Where,wherever。

4.原因状语从句because,as,since,now that,和considering that,seeing that这六个连词都用于表示表示原因,但在语气上一个比一个弱。

5.结果状语从句引导结果状语从句的连词有：that,so that,so…that…6.目的状语从句引导目的状语从句的主要连词有:that,so that,in order that,for fear that,lest.7. 让步状语从句引导让步状语从句的连词有：Although,though,as,even if,even though,no matter,however,whatever,while,whether。

英语各种从句的详细讲解英语从句（Subordination）英语从句主要有定语从句，状语从句和名词性从句（主语从句，宾语从句，表语从句，同位语从句）一．定语从句1．定语从句：由关系代词who,whom,whose,that,which;关系副词when,where,why引导。

1.The death notices tell us about people who have died during the week.2.The man(whom)you spoke to just now is my friend.3.The building whose lights are on is beautiful.4.Please find a place which we can have a private talk in.5.The knee is the joint where the thighbone meets the large bone of the lower leg.6.He still remembers the day when he went to school.7.It is no need telling us the reason why you didn't finish it in time.8.He has three sons,two of whom died in the war.9.Mr.Smith,whose wife is a clerk,teaches us English.10.In the Sunday paper there are comics,which children enjoy.2．只能用that和who引导的定语从句A．all,nothing,anything,a few,one做先行词指物时B．先行词前有形容词最高级修饰时，后面常跟that而不是which.C．先行词前有the only,the first,the last,the next,the very 等词修饰时，引导词只能用that。

英语各种从句的详细讲解（实用版）目录1.引言2.英语从句的概述3.名词性从句3.1 主语从句3.2 宾语从句3.3 表语从句3.4 同位语从句4.状语从句4.1 时间状语从句4.2 地点状语从句4.3 原因状语从句4.4 结果状语从句4.5 条件状语从句4.6 让步状语从句5.定语从句5.1 限制性定语从句5.2 非限制性定语从句6.结论正文英语作为一门世界性的语言，其语法结构丰富而严谨。

在英语语法体系中，从句是重要的组成部分之一。

从句在句子中扮演着各种不同的角色，如主语、宾语、表语等，因此对英语从句的掌握对于学习英语和应用英语具有重要意义。

本文将对英语各种从句进行详细讲解。

首先，我们来了解名词性从句。

名词性从句在句子中扮演名词的角色，可以作为主语、宾语、表语或同位语。

具体来说：1.主语从句：主语从句在句子中作主语，通常由连词如 that、whether 等引导。

例如：What he said is true.（他说的是真的。

）2.宾语从句：宾语从句在句子中作宾语，通常由连词如 that、whether、if 等引导。

例如：I don"t know whether he will come.（我不知道他是否会来。

）3.表语从句：表语从句在句子中作表语，通常由连词如 that、whether 等引导。

例如：The problem is that we don"t have enough time.（问题是我们没有足够的时间。

）4.同位语从句：同位语从句用于说明名词的具体内容，通常由连词如that、whether 等引导。

例如：The news that he won the prize surprised us.（他获奖的消息让我们感到惊讶。

）接下来，我们来看状语从句。

状语从句在句子中作状语，用来修饰主句，表示时间、地点、原因、结果、条件等关系。

具体来说：1.时间状语从句：时间状语从句表示时间关系，通常由连词如 when、while、since 等引导。

从句有主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句6类.前四类由于主语从句、表语从句、宾语从句及同位语从句在句子的功用相当于名词,所以通称名词性从句；后两类定语从句和状语从句功用相当于形容词,称为形容词性从句.状语从句还可以分为条件状语从句、原因状语从句、方位状语从句和时间状语从句.1.主语从句（Subject Clause）：用作主语的从句叫主语从句.引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等.2.表语从句 Predicative Clause）：用作表语的从句叫表语从句.引导表语从句的关联词与引导主语从句的关联词大都一样.3.宾语从句（Object Clause）：在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句.第一部分一.、定义：宾语从句就是一个句子作动词或介词的宾语.二、学习宾语从句要抓住三要素：连接词、语序和时态.连接词一般都是that(指事务或人),which 指事）,who 指人）1．从句为陈述句,常选择连接词that或将that省略,直接与主句相连.2．从句为一般疑问句,常选择连接词if或whether.在whether…or not结构中不能用if替换. 3．从句为特殊疑问句,常选择what,when,where,which,who,how等的疑问代、副词作连接词.★当who为主语时,句式为：who+谓语+其他判断时态情况：1.主句是一般现在时,从句为各种时态情况2.主句是一般过去时,从句为各种相应过去时态注意：从句描绘客观事实,用一般现在时3.主句是一般将来时,一般从句为一般现在时 “主将从现”）例题：〈1. The teacher told the children that the sun＿＿B＿＿round.A. wasB. isC. wereD. are 答案为B,属于第二种情况.宾语从句,在复合句中作宾语,位于及物动词后；Tell him which class you are in ．(1)主、从句时态一致：主句谓语过去时,从句相应过去时；He answered that he was listening to me.主句谓语现在时,从句时态任所需；He says (that) he will leave a message on my desk.具体过去永不变,真理格言现在时；He told me that he was born in 1980.2）否定前移,及完成反意问句；在think / believe / suppose / guess / imagine / expect等动词后跟宾语从句否定式时,应转移到主句上去,完成反意疑问句时,应与从句主、谓保持一致.（注: 否定前移的条件是,主句主语是第一人称）I don't think you are right ,are you ?3）在表示建议suggest , advise要求demand 、desire、require、request、propose；决定decide; 命令order、command; 坚决主张insist;等动词后跟宾语从句,用 should）+v． 虚拟语气）eg．I suggested that you should）study hard．4）如果宾语从句后有宾语补足语,用it作形式宾语,把宾语从句后置eg．You may think it strange that he would live there．5）宾语从句that常可省略,但在以下情况下不能省略A．当主句谓语动词带有两个或两个以上宾语从句时,可以省略第一个that,其他不能省略. eg．I believe that）you have done your best and that things will get bet?鄄ter．B．当it作形式宾语时eg．She made it clear that she had nothing to do with him．C．当宾语从句前置时eg．That our team will win,I believe．三、分类A 、作动词的宾语:eg．I heard the newsI 主语heard 谓语动词the news.名词作宾语I主语heard 谓语动词that he would come here later on.一个句子作宾语---宾语从句B 、作介词的宾语:eg．He said nothing about this plan .He主语said 谓语动词nothing 代词作动词的宾语about 介词the plan. 名词作介词的宾语四、带有宾语从句的复合句的构成:带有宾语从句的复合句就是用连接词把一个主句和一个宾语从句连接在一起.连接词有：that(可省略),what, who, when, where, why, which, if, whether, how.五、注意：A 宾语从句必须用陈述语序.False: He is wondering when can he finish this difficult job.Right: He is wondering when he can finish this difficult job.B 有时候可以用it 作形式宾语,而把真正的宾语从句放在后面.Bad: I thought that he could finish this job in just two hours impossible.Good: I thought it impossible that he could finish this job in just two hours.Bad: He left whether we should continue this project to my judgment.Good: He left it to my judgment whether we should continue this project.C 带有宾语从句的复合句的否定形式一般是否定主句.Bad: I think he doesn’t like the English teacher.Good: I don’t think he likes the English teacher.D False: He wanted to know why he is crying in the corner.Right: He wanted to know why he was crying in the corner.4.同位语从句（Appositive Clause）：与先行词同位或等同的从句叫作同位语从句.其关联词多为that.5.定语从句 Attributive Clause）：用作定语的从句叫定语从句.定语从句一般皆放在被它所修饰的名 代）词之后,这种名 代）词就叫作先行词 Antecedent）.引导定语从句的关联词为关系代词(或称引导词、关系词等）.关系代词在定语从句中可用作主语、宾语、定语等；关系副词在定语从句中用作状语.①引导定语从句的关联词有who, whom, whose, that, when, where, why 和which. 在非限制定语从句中, 只可用which, who, whose, where , when., 如果指代前面整个句子, 多用which.例句：The dog that/which was lost has been found. 失踪的狗已经找到了.）③as 可做引导词引导定语从句, 多和such, the same 连用. As 引导的定语从句也可修饰整个句子, 既可放在先行词后,也可放在句子开头.例句：Such people as you describe are rare nowadays. 你描述的那一类人现在很少了.）④介词+which/whom/whose从句The driver is the man from whose room she had stolen the gold watch. 她就是从那个司机的房间偷了金表的.）⑤代/名+介词+which 从句He is needing a book, the name of which I don't know.（ 他需要一本书,但是我不知道书名.）⑥同位语从句和定语从句The news that you told me was really exciting. 你告诉我的好个消息真的是很激动人心.）⑦难句:NO.1He is one of the men who were chosen to represent the group. 他是被选为代表该团队的人中一员.）第二部分一、时态1·主句用一般现在时,从句可用任意时态.2·主句用过去时,从句用过去某个时态.3·主句用过去时,从句是真理时,只用一般现在时.二、宾语从句的几类连接词：①从属连词连接宾语从句的从属连词主要有that,if,whether. that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句.例句：I don’t know if there will be a bus any more.我不知道是否还会有公交车.②连接代词连接代词主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等.连接代词一般指疑问,但what, whatever除了指疑问外,也可以指陈述.例句：Do you know who has won Red Alert game?你知道谁赢了这一局红警游戏吗?③连接副词连接副词主要有when,where,why,how,whenever,wherever,however等.例句：He didn’t tell me when we should meet again.他没有告诉我什么时候我们能再见面.三、动词的宾语从句大多数动词都可以带宾语从句We all expect that they will win , for members of their team are stronger.我们都预料他们会赢,因为他们的队员更强壮.★部分“动词+副词”结构也可以带宾语从句例句：I have found out that all the tickets for the concert have been sold out.我发现这场音乐会的所有票都卖光了.★动词短语也可以带宾语从句常见的这些词有：make sure确保make up one’s mind下决心keep in mind牢记例句：Make sure that there are no mistakes in your papers before you turn them in.在上交试卷前确保没有任何错误.四、可运用形式宾语it代替的宾语从句①动词find,feel,consider,make,believe等后面有宾语补足语的时候,则需要用it做形式宾语而将that宾语从句后置.例句：I think it necessary that we take plenty of hot water every day .我认为每天多喝开水是有必要的.②有些动词带宾语从句时寻要在宾语与从句前加it这类动词主要有:hate, take , owe, have, see to.例句：I hate it when they with their mouths full of food.我讨厌他们满嘴食物时说话.③若宾语从句是wh-类,则不可用it代替例句：We all consider what you said to be unbelievable.我们都认为你所说的是不可信的.五、介词的宾语从句用wh-类的介词宾语从句例句：We are talking about whether we admit students into our club.我们正在讨论是否让学生加入我们的俱乐部.★用that,if引导的介词宾语从句有时候except,but,besides三个介词后可见到that引导的宾语从句例句：I know nothing about my new neighbor except that he used to work with a company.对于我的新邻居我只知道他曾在一家公司上班,其他一无所知.六、形容词的宾语从句常用来引导宾语从句的形容词有:sure,certain,glad,please,happy,sorry,afraid,satisfied,surprised例句：I am sure I will pass the exam.我确信我会通过考试.七、if,whether在宾语从句中的区别①if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if②少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether.③whether后可以加or not,但是if不可以.④在不定式前只能用whether.如：I can’t decide whether to stay. 我不能决定是否留下.⑤避免歧异时,我们常用whether而不用if.八、哪些宾语从句不可以省略引导词that1.当that作learn,suggest,explain,agree,wonder,prove,mean,state,feel,hold等动词的宾语时;2.当宾语从句较长时;3.当主语状语置于主句尾,宾语从句之前时;4.当主语谓语动词(包括非谓语动词)与宾语从句之间有插入语时;5.当一个动词带有两个或两个以上宾语从句时,此时第一个that可以省略,第二个that不可以省略;6.当宾语从句中的主语是this,that或this,that做主语的定语时;7.当宾语从句是双宾语中的直接宾语时;8.当宾语从句的主语是非谓语动词或主语从句时;9.当主语中的谓语动词是固定词组时;10.当宾语从句有it做其先行词时;11.在直接引语中,转述分句把宾语从句隔开时.九、宾语从句的否定转移主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.例句：I don’t think he will come to my party.而不能说成I think he won’t come to my party.我认为他不会来我的舞会.★如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式.例句：We find that he never listens to the teacher carefully,does he?我们发现他从来不仔细听老师讲课,是不是?十、宾语从句的时态和语序当主句为现在时或将来时的时候,宾语从句的时态一般不受主句的时态所影响.当主句为过去时的时,细分为一下几种情况：①从句用一般过去时或过去进行时表示与主句谓语动词动作同时发生例句：I only knew he was studying in a western country,but I didn’t know what country he was in.我只知道他当时在西方的一个国家读书,可不知道是哪个国家.②从句过去完成时表示该动作发生在主句谓语动作之前例句：He told me that he had told Mary about the meeting already.他告诉我他已经把有关会议的事情告诉的了Mary.③从句谓语用过去将来时表示该动作发生在主句谓语动作之后例句：The reporter asked if the government would take necessary measures to put down the to-do.记者问政府是否会采取必要的措施镇压骚乱.★如果从句是一个客观真理,那么从句的时候不根据主句的时态而变化例句：The teacher said that the moon goes around the earth yesterday.老师昨天说月亮绕着地球转.★当宾语从句的引导词是who,which,what,when,where,how,why等表疑问时,不能按正常语序安排,经常将这类引导词置于句首例句：Who do you think the public might choose as their favorite singer this year?你认为今年公众会选谁为他们最喜欢的歌手.同位语从句用法比较"固定",把关键的几个词背下来 下面这个材料供参考）：一、在复合句中用作同位语的从句叫同位语从句.它一般跟在某些名词后面,用以说明该名词表示的具体内容.如：I had no idea that you were here．我不知道你在这里.二、可以跟同位语从句的名词通常有news,idea,fact,promise,question,doubt,thought,hope,message,suggestion,words消息）,possibility等.如：I’ve come from Mr wang with a message that he won’t be able to see you this afternoon．我从王先生那里来,他让我告诉你他今天下午不能来看你了.三、英语中引导同位语从句的词通有连词that,whether,连接副词how,when,where等.（ 注：if,which 不能引导同位语从句.）如：l have no idea When he will be back．我不知道他什么时候回来.四、有时同位语从句可以不紧跟在说明的名词后面,而被别的词隔开. 如：The thought came to him that maybe the enemy had fled the city．他突然想起可能敌人已经逃出城了.五、同位语从句与定语从句的区别.1、同位语从句与前面的名词是同位关系,即说明它前面名词的内容；而定语从句与前面的名词是修饰与被修饰关系,即限定它前面的名词范围,或补充一些情况.如：The news that l have passed the exam is true．我通过了考试这一消息是真的.同位语从句,即从句所表达的意思就是前面名词的内容.）The news that he told me just now is true．他刚才告诉我的消息是真的.定语从句,从句对前面名词起修饰限制作用,即“他告诉我的”那个消息,而不是别的消息.）2、引导同位语从句的that是连词,在从句中不充当任何成份,而引导定语从句的that是关系代词,除起连接作用外,还在从句中充当主语、宾语或表语等.如：The idea that computers can recognize human voices surprises many people.计算机能够识别人的声音的想法使许多人感到惊奇.that在从句中不充当任何成份.）一个名词(或其它形式)对另一个名词或代词进行修饰,限定或说明,这个名词(或其它形式)就是同位语.同位语与被它限定的词的格要一致,并常常紧挨在一起.1) 非独立的同位语：常出现在被限定词前Bruce Lee (姓名) 李小龙Graf Schmidt (称号,浑名) 施密特伯爵Doktor Wang (职称,头衔) 王博士Uncel Liu (亲戚的称呼) 刘叔叔die Stadt Shanghai (类属名称) 上海市the Province Hebei (类属名称) 河北省das Jahr 2000 (类属名称) 2000 年three Kilo tomato (度量名称) 三公斤西红柿the University Bremen (专有名词) 不来梅大学。

从句从句按其在主句中的句法功能可分为三类:即名词性从句、形容词性从句(即定语从句)和副词性从句(即状语从句)。

引导从句的词称作关联句.一、名词性从句引导这些名词性从句的关联词包括:从属连词that, if, whether;连接代词who,whoever,whom,whomever,which,whichever,what,whatever,wh ose;连接副词where, when, why, how。

其中, 从属连词只起连接作用, 在从句中不充当任何句法成分,而连接代词和连接副词既起连接作用, 在从句中又充当一定的成分. That Owen should have married his cousin is not at all surprising. The fact is that he didn't go to the dinner party.I don't know if he will attend the meeting.Have you heard the news that Mary is going to marry Tom?你听说玛丽要和汤姆结婚的消息了吗?(that引导同位语从句)[提示]1. 在含有主语从句的复合句中, 为保持句子平衡, 常用it作形式主语,而将真正的主语从句置于句末.It's well-known that water is indispensable to life.(形式主语)2. 为保持句子平衡, that引导的宾语从句也常用it代替, 而将真正的宾语从句置于主句句末。

这常常出现在主句有形容词或分词作宾语补足语的情况下。

He made it quite clear that he preferred to live here.3. 从属连词whether和if都作“是否…”解, 但if不可引导主语从句和表语从句。

whether可与or(not)连用, 而if不可以。

从句名词性从句：就是这个些从句的作用，相当于一个名词，按作用分类分成：主语从句、宾语从句、表语从句、同位语从句。

一、主语从句（名词性从句）：引导词：1、that：万能词2、whether：是否，能否（表示怀疑）3、what：什么，……的东西4、whatever：无论……5、who：谁，（指人）6、whoever：无论谁，任何人7、which：那一个，指代前提提到的东西8、wichever：无论哪一个9、whose：谁的（所有格）10、whom：谁（who的宾格）11、whomever：无论谁，任何人（whoever的宾格）12、how：怎样，用什么方式13、why：为什么14、when：当……时候（表示时间）15、where：在……地点（表示地点）学习心得：从句在复合句中做主语，翻译的时候把一句话，就当一个名词来翻译二、宾语从句（名词性从句）：引导词：1、that：万能词（无意思，只是符号，有的时候会省略）2、who：谁，（指人）3、why：为什么4、when：当……时候（表示时间）5、which：那一个，指代前提提到的东西6、what：什么，……的东西7、how：怎样，用什么方式8、whether：是否，能否（表示怀疑）9、if：如果（表示假设）注：放在非谓语动词（动名词）后面的句子也叫做宾语从句。

如：knowing that………………………………三、表语从句（名词性从句）：引导词：1、that：万能词2、whether：是否，能否（表示怀疑）3、what：什么，……的东西4、whatever：无论……5、who：谁，（指人）6、whoever：无论谁，任何人7、which：那一个，指代前提提到的东西8、wichever：无论哪一个9、whose：谁的（所有格）10、whom：谁（who的宾格）11、whomever：无论谁，任何人（whoever的宾格）12、how：怎样，（表示方式）13、why：为什么（表示原因）14、when：当……时候（表示时间）15、where：在……地点（表示地点）16、as if：好像，似乎（表示可能）17、as though：好像，仿佛（表示可能）学习心得：用句子表示名词，在句中做表语，引导词跟主语从句一样。

在句子里做主语，宾语，表语的分别是主语，宾语，表语从句。

修饰名词的是定语从句，相当于形容词。

修饰整个句子，动词，形容词的是状语从句。

在英语中，主要有三大从句，即名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）、形容词性从句（即定语从句）、副词性从句（即状语从句，包括时间、条件、结果、目的、原因、让步、地点、方式等）。

1, 定语从句。

1）先行词是名词。

2）定语从句跟在名词后。

是修饰名词的。

3）与中文顺序相反。

4）定语从句的组成是：连词+主+谓+宾。

5）连词在从句里可以作主语、宾语、状语等。

6）当先行词的名词表示人时，后面的连词用who+v/（whom）+s+v/whose+N+s+v.当先行词的名词表示物时，后面的连词用which/that ,whose.7）连词前可以有介词。

8）不许用what1. All the people who work on a n ewspaper must be able to work fast.2. Corn is a useful pla nt which can be eate n by both people and ani mals.3. I have a frie nd whose cous in is a tennis player.4. The boy lived in a part of tow n where there were no schools.5. During the hurrica ne, one of the tree bran ches broke the bed in whichthe girl had bee n sleep ing.II. 名词从句。

起名词作用。

二名词1. 主语从句。

1）在主语位置上。

2）组成：连词+主语+谓语+宾语3）连词不可省4）不许用ifWhen we' ll go to school is still a question.2. 宾语从句。

英语从句大全1）表语从句1.定义：用作表语的从句叫做表语从句。

2.构成：关联词+简单句3.引导表语从句的关联词的种类：（1）从属连词that.如：The trouble is that I have lost his address.麻烦是我把他的地址丢了。

（2）从属连词whether，as，as if.如：He looked just as he had looked ten years before.他看起来还与十年前一样。

The question is whether they will be able to help us.问题是他们是否能帮我们。

注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句，如：All this was over twenty years ago，but it’s as if it was only yesterday.这都是20多年前的事了，但宛如昨天一样。

能跟表语从句的谓语动词一般为系动词be，seem，look等。

如：It looked as if it was going to rain.看起来天要下雨了。

（3）连接代词who，whom，whose，what，which，whoever，whatever，whichever连接副词where，when，how，why.如：The problem is who we can get to replace her.问题是我们能找到谁去替换她呢。

The question is how he did it.问题是他是如何做此事的。

That was what she did this morning on reaching the attic.那就是她今晨上了阁楼干的。

解释：1.连词because可引导表语从句。

如：I think it is because you are doing too much.我想这是因为你做得太多。

英语各类从句的详细解释从句是相对于主句而言的，即它是从属于某一个主句，而不能单独作一个句子。

有三大类：名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）形容词性从句（即定语从句）副词性从句（即状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式）1. 主语从句用作主语2. 宾语从句用作宾语3. 表语从句用作表语4. 同位语从句用于解释说明前面的名词5. 定语从句相当于一个形容词，用于修饰前面的名词或代词6. 状语从句相当于一个副词名词性从句主语从句、宾语从句、表语从句、同位语从句在复合句中起名词的作用，所以这四种从句合称名词性从句。

它们在主句中充当主语、宾语、表语、同位语，都不能用逗号与主句分开。

名词性从句的三要素1.引导词引导名词性从句的引导词可分为三类：(1) 连词：that （无任何词意）whether, if （均表示“是否”表明从句内容的不确定性）as if ,as though （均表示“好像”，“似乎”）以上在从句中均不充当任何成分(2) 连接代词：what, whatever, who, whoever, whom, whomever, which, whichever ,whose(3) 连接副词：when, where, how, why既然是引导词，所以这些词就总是位于名词性从句的最前面。

(1). 连词that 只起连接作用，没有任何意思，也不充当句子成分，在宾语从句中可省略，但引导其他名词性从句时通常不省略。

(2). 连词whether 也不充当句子成分，但有自己的意思，表示“是否”：引导宾语从句时，可换成if，但引导其他名词性从句时不能换成if。

(3). 连接代词who(m), whose, which, what 等，均有各自的意义，在从句中作主语、宾语、定语等。

(4). 连接副词when, where, how, why 等，也各自有自己的意义，在从句中作状语。

英语从句类型及判别方法一、名词性从句。

名词性从句就像是一个超级变身的名词，在句子里能充当主语、宾语、表语或者同位语呢。

1. 主语从句。

主语从句就是在句子里当主语的从句啦。

比如说“What he said is very important.”（他说的话很重要），这里的“What he said”就是主语从句，整个句子的意思是这个从句所表达的内容很重要哦。

判别主语从句很简单，你就看这个句子开头的部分，如果是一个句子在充当主语，那就是主语从句啦。

2. 宾语从句。

这个就更好理解啦，就像一个小跟班，跟在动词或者介词后面当宾语的从句。

像“I don't know where he is.”（我不知道他在哪里），“where he is”就是宾语从句，它是“know”这个动词的宾语。

如果一个句子里，动词或者介词后面跟着一个句子，那大概率就是宾语从句喽。

3. 表语从句。

表语从句呢，是在系动词后面的从句。

比如说“The problem is how we can solve it.”（问题是我们如何能解决它），“how we can solve it”就是表语从句，它跟在系动词“is”后面，用来解释说明主语“the problem”的情况。

当你看到系动词后面跟着一个句子的时候，就可以想到表语从句啦。

4. 同位语从句。

同位语从句是用来解释说明前面的名词的，它和那个名词是同等地位的哦。

例如“The news that he won the game made us excited.”（他赢得比赛的这个消息让我们很兴奋），“that he won the game”就是同位语从句，用来解释“the news”到底是什么内容。

一般同位语从句前面的名词都是一些抽象的名词，像news（消息）、idea（想法）之类的，后面跟着一个句子来详细解释这个名词，那就是同位语从句啦。

二、形容词性从句（定语从句）定语从句就像是一个小尾巴，用来修饰名词或者代词的。

1分钟搞懂英语中的“各种从句〞英语中的从句分三类：1〕名词性从句：主语从句、宾语从句、表语从句、同位语从句2〕形容词性从句：定语从句2〕副词性从句：状语从句〔表时间、条件、结果、目的、原因、让步、地点、方式〕*名词性从句：在句中作各类名词成分〔1〕主语从句在句中作主语成分例句：Whether it is going to rain is not known yet. 天会不会下雨还不得而知。

解读：Whether引导主语从句，whether it is going to rain在句中做主语成分。

〔2〕宾语从句在句中作宾语成分例句：I do not know where he lives. 我不知道他住在哪里。

解读：where引导宾语从句，where he lives在句中作宾语成分。

〔3〕表语从句在句中作表语成分例句：I am who I am. 我就是我。

解读：who引导了一个表语从句，who I am在句中作表语成分。

〔4〕同位语从句在句中解释说明前面的抽象名词例句：The idea that the earth is the center of the universe is wrong. 地球是宇宙中心的观点是错误的。

解读：that引导了一个同位语从句解释说明前面的“idea〞，常见的可以跟同位语从句的名词有：news, idea, fact, thought, question, hope, message, suggestion, truth。

引导词除了that，还可以是whether, how, when, where〔举例：I have no idea when he will come.〕*形容词性从句：定语从句相当于一个形容词，用于修饰前面的名词。

〔1〕限定性定语从句例句1：There are many students who want to study abroad. 有很多学生都想出国留学。

英语中什么是从句 从句(SubordinateClause)是复合句中不能独⽴成句，但具有主语部分和谓语部分，由that、who、whom、when、why、where、how、which等引导词引导的⾮主句部分。

主要分类 从句不能单独成句，但它也有主语部分和谓语部分，是⼀个特殊句⼦，就像⼀个句⼦⼀样。

所不同在于，从句须由⼀个关联词(connective)引导。

根据从句语法功能的不同可分为：主语从句、表语从句、宾语从句、同位语从句、定语从句和状语从句6类。

前四类由于主语从句、表语从句、宾语从句及同位语从句在句⼦的功⽤相当于名词，所以通称名词性从句;定语从句功能相当于形容词，称为形容词性从句;⽽状语从句功能相当于副词，称为副词性从句。

状语从句还可以分为条件状语从句、原因状语从句、地点状语从句、⽬的状语从句、让步状语从句、⽐较状语从句、⽅式状语从句、结果状语从句和时间状语从句。

1.主语从句(SubjectClause)：⽤作主语的从句叫主语从句。

引导主语从句的关联词有从属连词、疑问代词、疑问副词、缩合连接代词、缩合连接副词等。

2.表语从句(PredicativeClause)：⽤作表语的从句叫表语从句。

引导表语从句的关联词与引导主语从句的关联词很多都⼀样。

3.宾语从句(ObjectClause)：在句⼦中起宾语作⽤的从句叫做宾语从句.宾语从句分为三类：动词的宾语从句、介词的宾语从句和形容词的宾语从句。

4.同位语从句是名词性从句(主语从句、表语从句、宾语从句、同位语从句)中的主要从句之⼀，从句作同位语表⽰与之同位的名词(短语)的实际内容，它的作⽤相当于名词，对前⾯的名词(短语)加以补充说明或进⼀步解释，相当于⼀个表语从句，它们之间的关系是同位关系，即主表关系。

5.定语从句是由关系代词或关系副词引导的从句，其作⽤是作定语修饰主句的某个名词性成分，相当于形容词，所以⼜称为形容词性从句，⼀般紧跟在它所修饰的先⾏词后⾯。