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初中英语状语从句教案及精品练习讲解第一章：状语从句概述1.1 定义：状语从句是句子中起修饰作用的部分，用来修饰动词、形容词、副词或整个句子。
1.2 分类：状语从句可分为时间状语从句、地点状语从句、原因状语从句、条件状语从句、方式状语从句等。
第二章：时间状语从句2.1 定义：时间状语从句用来表示时间，说明动作发生的时间。
2.2 常用连词：when, whenever, while, as soon as, before, after, until, since, for等。
2.3 例句：I will go to the supermarket when I finish my homework.He arrives whenever he wants.第三章：地点状语从句3.1 定义：地点状语从句用来表示地点，说明动作发生的地点。
3.2 常用连词：where, wherever, nowhere, everywhere等。
3.3 例句：Please put the book where it belongs.We will meet wherever we are.第四章：原因状语从句4.1 定义：原因状语从句用来表示原因，说明动作发生的原因。
4.2 常用连词：because, since, as, for等。
I didn't go because it was rning.Since you are busy, I will do it for you.第五章：条件状语从句5.1 定义：条件状语从句用来表示条件，说明动作发生的条件。
5.2 常用连词：if, unless, until, provided that, on condition that 等。
5.3 例句：If it doesn't rn, we will go for a walk.You can borrow the book unless you promise to return it on time.第六章：方式状语从句6.1 定义：方式状语从句用来表示方式或手段，说明动作的方式或手段。
状语从句状从句用来修主句中的，副和形容的从句叫状从句。
依照其含状从句可分状从句，地址状从句，条件状从句，原因状从句，果状从句，比状从句，目的状从句，步状从句。
1. 状从句(1) 状从句常用when, as, while, before, after, since, till, until, as soon as等来引。
比方：It was raining hard （ rain hard 下大雨）when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along （沿着走）the lake, he sang happily.He had learned a little Chinese before he came to China.After he finished middle school, he went to work in a factory.(2)在状从句里，平常不用将来，用在表示将来的作或状。
比方：I ’ ll ring you up as soon as I get to New York.I will tell him everything when he comes back.He won ’ t believe it until he sees it with his own eyes.(3) 在有 till 或 until 引的状从句的主从复合句里，若是主句用必定式，其含是“向到达⋯⋯”，只能用延性。
若是主句用否认式，其含是“直到⋯⋯才⋯⋯” , 在“⋯⋯ 以前不⋯⋯” ,可用瞬。
比方：The young man read till the light went out （熄） .Let ’ s wait until the rain stops.We won’ t start until Bob comes.Don’get off （从下来）until the bus stops.【 Till 是指直到某一特定事件发生的时候，而在那个时辰此后，该事情或状况仍将连续。
新课标初中英语状语从句教案及精品练习讲解掌握状语从句的作用。
▲掌握状语从句的意义。
▲掌握各种不同类型的状语从句。
【知识要点】状语从句在句中作状语，修饰句中的动词、形容词或副词等。
状语从句由从属连词作关联词，从属连词在从句中不充当句子成分。
状语从句在主句之前，一般要用逗号分开，朗读时用升调。
状语从句在主句之后，一般不用逗号，朗读时用降调。
状语从句按其意义和作用可分为时间、条件、原因、让步、目的、结果、方式、比较、地点等类型。
1. 时间状语从句(1) 常用的连词有when（当……时候），while（当……时候）,before(在……以前)，after（在……以后），until(till)（直到……为止）,since（自从……以来）, as soon as（一……就）等。
(2) 时间状语从句中一般不用将来时，若谈论将来的事情，往往用一般现在时代替：如：I'll go on with the work when I ________ (come) back tomorrow.As soon as he ___________(finish) the work, he will come to see me..2. 条件状语从句常由if (假如、如果) No matter (不管) 来引导，如果主句是一般将来时，从句往往用一般现在时来表示将来。
如：I'll go for a picnic if it _____(be) fine.No matter what he ________(say)，I won't believe him，3. 原因状语从句(1) 常由because, since, as引导。
(2) because表示直接的原因，着重点在从句，用于回答why, 语气最强。
because 不能与so 连用。
since一般表示对方已知的，无须加以说明的既成事实的理由，全句中心在主句，语气比because弱，常译为“既然”。
状语从句详解及练习题附答案1 时间状语从句:在一个句子中作时间状语的句子。
时间状语的连接词：when（当…时候) while(当…时候） as(当…时候) after(在…以后) before （在…以前) as soon as（一…就） since（自从…到现在) till /until(直到…才) by the time（到…为止)依旧是连接词后加陈述语序。
举例：when当…的时候（一般情况下主句是将来时的时候，从句要用一般现在时。
) Mozart started writing music when he was four years old。
2 原因状语从句：在一个句子中作原因语的句子。
连接词:由连词because, since， as引导，也可由for， now that 等词引导。
举例：I didn’t go to school yesterday because I was ill.3 条件状语从句连接词：if如果， unless (=if not) 除非。
(让步)举例：If it doesn’t rain tomorrow, we will go hiking。
4 目的、结果状语从句目的状语从句是指在一个句子中充当目的状语的句子。
结果状语从句是指在一个句子中充当结果状语的句子目的状语从句连接词so that, so…that ， in order that 引导.结果状语从句连接词 so…that, such…that, so much/many…that引导。
举例：so…that 如此…以至于The scientist’s report was so instructive that we were all very excited.5 让步状语从句让步状语从句是指在句子中作让步的状语的句子连接词： though, although。
，whether…or not举例：Although he is rich, yet he is not happy。
状语从句用来修饰主句中的动词，副词和形容词的从句叫状语从句。
根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句，原因状语从句，结果状语从句，比拟状语从句，目的状语从句，让步状语从句。
1. 时间状语从句(1) 时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。
例如：It was raining hard 〔 rain hard 下大雨〕when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along 〔沿着走〕the lake, he sang happily.He had learned a little Chinese before he came to China.After he finished middle school, he went to work in a factory.(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。
例如：I ’ ll ring you up as soon as I get to New York.I will tell him everything when he comes back.He won ’ t believe it until he sees it with his own eyes.(3) 在带有 till 或 until 引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到⋯⋯ 时〞，谓语动词只能用延续性动词。
如果主句用否认式，其含义是“直到⋯⋯才⋯⋯〞 ,“在⋯⋯以前不⋯⋯〞 , 谓语动词可用瞬间动词。
例如：The young man read till the light went out〔熄灭〕.Let ’ s wait until the rain stops.We won’ t start until Bob comes.Don’ tget off 〔从下来〕until the bus stops.【 Till 是指直到某一特定事件发生的时候，而在那个时刻之后，该事情或状况仍将持续。
初中英语状语从句讲解、练习与答案状语从句状语从句用来修饰主句中的动词，副词和形容词的从句叫状语从句。
根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句，原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。
1. 时间状语从句(1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。
例如: It was raining hard(rain hard 下大雨) when I got to school yesterday. While he was doing his homework, the telephone rang. As he walked along(沿着走) the lake, he sang happily. He had learned a little Chinese before he came to China. After he finished middle school, he went to work in a factory.(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。
例如:I’ll ring you up as soon as I get to New York.I will tell him everything when he comes back. He won’t believe it until he sees it with his own eyes.(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。
如果主句用否定式，其含义是“直到……才……”, “在……以前不……”, 谓语动词可用瞬间动词。
例如:The young man read till the light went out(熄灭).Let’s wait until the rain stops.We won’t start until Bob comes.Don’t get off(从下来) until the bus stops.【Till是指直到某一特定事件发生的时候，而在那个时刻之后，该事情或状况仍将持续。
初中英语状语从句讲解、练习与答案初中英语状语从句讲解、练习与答案1、时间状语从句(1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。
例如：It was raining hard（rain hard 下大雨） whengot to school yesterday、While he was doing his homework, the telephone rang、As he walked along（沿着走） the lake, he sang happily、He had learned a little Chinese before he came to China、After he finished middle school, hewent to work in a factory、(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。
例如：I’llring you up as soon as I get to New York、I will tell him everything when he comes back、He won’t believe it until he sees it with his own eyes、(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。
如果主句用否定式，其含义是“直到……才……”, “在……以前不……”,谓语动词可用瞬间动词。
例如：The young man read till the light went out（熄灭）、Let’s wait until the ra instops、We won’t start until Bob comes、Don’t get off （从下来） until the bus stops、【Till是指直到某一特定事件发生的时候，而在那个时刻之后，该事情或状况仍将持续。
初中英语状语从句教案及精品练习讲解一、教学目标：1. 让学生掌握状语从句的定义和基本用法。
2. 培养学生正确运用状语从句表达句子意思的能力。
3. 提高学生英语语法和句子结构的理解能力。
二、教学内容：1. 状语从句的定义和分类。
2. 状语从句的连接词及用法。
3. 状语从句的句子结构分析。
4. 状语从句的翻译方法和技巧。
三、教学重点与难点：1. 状语从句的分类和连接词的用法。
2. 状语从句在句子中的位置和句子结构分析。
3. 状语从句的翻译方法和技巧。
四、教学过程：1. 导入：通过举例让学生初步了解状语从句的概念。
2. 讲解：讲解状语从句的定义、分类、连接词及用法。
3. 练习：让学生分析句子结构，判断并改正错误。
4. 翻译：让学生翻译含有状语从句的句子，讲解翻译方法和技巧。
五、课后作业：1. 复习本节课所学内容，掌握状语从句的用法。
2. 完成课后练习题，巩固所学知识。
3. 收集含有状语从句的句子，进行翻译和分析。
注意事项：1. 教学过程中要注意举例生动、贴近生活，激发学生的学习兴趣。
2. 针对不同程度的学生，适当调整教学难度，确保教学质量。
3. 注重培养学生的语法分析和运用能力，提高他们的英语水平。
六、教学策略与方法：1. 采用情景教学法，通过设定真实的生活场景，让学生在实际语境中学习和运用状语从句。
2. 使用任务型教学法，设计各种练习任务，让学生在完成任务的过程中掌握状语从句的用法。
3. 采用合作学习法，鼓励学生分组讨论，共同分析句子结构和翻译方法。
4. 运用多媒体教学手段，如PPT、视频等，丰富教学内容，提高学生的学习兴趣。
七、教学评价：1. 课堂表现：观察学生在课堂上的参与程度、发言情况和语法运用准确性。
2. 课后作业：检查学生完成作业的质量，包括语法、句子结构和翻译等方面。
3. 单元测试：定期进行单元测试，评估学生对状语从句知识的掌握程度。
4. 学生互评：鼓励学生相互评价，共同提高英语水平。
八、教学计划：1. 第一周：讲解状语从句的定义和分类。
教案状语从句初中课程目标：1. 学生能够理解状语从句的概念和作用；2. 学生能够识别和运用状语从句的不同类型；3. 学生能够在句子中正确使用状语从句。
教学内容：1. 状语从句的定义和作用；2. 状语从句的类型：地点状语从句、时间状语从句、原因状语从句、条件状语从句等；3. 状语从句的连接词：where、when、why、if、until等。
教学步骤：一、导入（5分钟）1. 引导学生回顾所学过的定语从句和宾语从句，复习其概念和用法；2. 提问：我们已经学习了定语从句和宾语从句，那么有没有同学听说过状语从句呢？什么是状语从句呢？二、新课讲解（15分钟）1. 讲解状语从句的定义和作用：状语从句是用来修饰动词、形容词、副词或整个句子的从句，它起到状语的作用；2. 讲解状语从句的类型：地点状语从句、时间状语从句、原因状语从句、条件状语从句等；3. 讲解状语从句的连接词：where（在哪里）、when（什么时候）、why（为什么）、if （如果）、until（直到）等；4. 举例讲解并让学生跟读不同类型的状语从句。
三、课堂练习（15分钟）1. 让学生分组，每组编写一个含有状语从句的句子，并展示给其他组；2. 让学生互相纠正和评价，教师进行指导和讲解；3. 让学生在小组内互相练习使用状语从句，加强理解和运用。
四、课堂小结（5分钟）1. 教师引导学生总结本节课所学的内容，包括状语从句的定义、类型和连接词等；2. 强调状语从句在句子中的作用和重要性；3. 提醒学生要注意状语从句的使用时机和位置。
五、作业布置（5分钟）1. 让学生回家后编写三个含有不同类型状语从句的句子，并写在作业本上；2. 要求学生在句子中正确使用状语从句，并注意连接词的使用。
教学反思：本节课通过讲解和练习，让学生了解了状语从句的概念、类型和连接词等知识。
在课堂练习环节，学生能够分组编写含有状语从句的句子，并在小组内进行练习和展示。
但在练习过程中，发现部分学生对状语从句的运用还存在一定的困难，需要进一步加强指导和练习。
初中英语状语从句讲解、练习与答案状语从句是用来修饰主句中的动词、副词和形容词的从句。
根据其含义，状语从句可以分为时间状语从句、地点状语从句、条件状语从句、原因状语从句、结果状语从句、比较状语从句、目的状语从句和让步状语从句。
时间状语从句通常用when、as、while、before、after、since、till、until、as soon as等连词来引导。
例如：昨天我到学校时，正下着大雨。
他正在做作业时，电话响了。
他沿着湖边走着，快乐地唱着歌。
他来中国之前学了一点中文。
他中学毕业后，去了一家工厂工作。
在时间状语从句中，通常不使用将来时态，而是用现在时态表示将来的动作或状态。
例如：我到纽约后会给你打电话。
他回来时，我会告诉他一切。
他不看到实物，是不会相信的。
在带有till或until引导的时间状语从句的主从复合句中，如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。
如果主句用否定式，其含义是“直到……才……”、“在……以前不……”，谓语动词可用瞬间动词。
例如：年轻人读书直到灯熄灭。
让我们等到雨停。
XXX来之前我们不会开始。
在公交车停下之前不要下车。
Till和Until的区别在于前者表示某一特定事件发生后仍会持续，而后者则表示该事件或状况在那个时刻之后将中止。
在固定组合中，XXX和till/until是不能互换的。
条件状语从句通常由if或unless引导。
谓语动词通常用现在时态表示将来的动作或状态。
例如，如果我明天有空，我会帮你学英语。
他不会迟到，除非他生病了。
同时，“祈使句+ and (or)+陈述句”在意思上相当于一个带有条件状语从句的复合句。
原因状语从句通常由because、since或as引导。
其中，XXX表示直接原因，语气最强，常放在主句之后。
而as和since语气较弱，一般用来表示明显的原因，常放在句首。
例如，他没来上学是因为他生病了。
由于现在下雨，我们不应该去动物园。
初中状语从句讲解及习题附答案（一）状语从句概述定义状语从句用作状语，是起副词作用的句子。
位置状语从句可以放在主句之前，也可以放在主句之后，时间、条件、原因和让步状语从句放在句首时需要用逗号和主句隔开。
分类根据其作用可以分为时间、地点、原因、条件、目的、让步、方式和比较等状语从句。
作用它可以修饰谓语、非谓语动词、定语、状语和整个句子。
（二）状语从句详解1. 时间状语从句引导词用法示例when 意为“当…的时候”。
When引导从句的谓语动词可以是延续性动词，也可以是瞬间动词。
并且when有时表示“就在那时”A liar is not believed when he speaks the truth.说谎者讲真话时也没有人相信。
When he arrives, I’ll call you. When you laugh and smile, your body relaxes.while While I was standing at thewindow, I saw several boysrunning along the street.While John was watchingTV, his wife was cooking. as The writer was angry as hewas travelling on a train toLondon because someonehad invaded his “space”.He smiled as he stood up. after With many hungry visitorswaiting, don’t stay too longat your table after you havefinished.If an early exit is necessary,you can leave after a sceneis over.before You can’t watch TV beforeyou finish your homework.Before it ended, the theatrewas almost empty.My father had left forCanada just before theletter arrived.till She didn’t even know thatit was an earthquake tillshe saw a shaking ( movingfrom side to side) light.The fireman worked veryhard till the fire was out.until 意为“直到”。
（一）状语从句概述（二）状语从句详解1. 时间状语从句2.地点状语从句3.条件状语从句4.原因状语从句5.目的状语从句6.结果状语从句7.让步状语从句8. 比较状语从句9.方式状语从句练习一一. 单项填空1. _______ he’s old, he can still carry this heavy bag.A. ThoughB. SinceC. ForD. So2. ---Do you know if he _______ to play basketball with us?---I think he will come if he ______ free tomorrow.A. comes; isB. comes; will beC. will come; isD. will come; will be3. In the zoo if a child _____ into the water and can’t swim, the dolphins may come up ______ him.A. will fall; to helpB. falls; to helpC. will fall; helpD. falls; helping4. I don’t remember ________ he worked in that city when he was young.A. whatB. whichC. whereD. who5. We will stay at home if my aunt ________ to visit us tomorrow.A. comesB. comeC. will comeD. is coming6. The police asked the children _______ cross the street ________ the traffic lights turned green.A. not; beforeB. don’t; whenC. not to; untilD. not; after7. I was late for class yesterday _______ there was something wrong with my bike.A. whenB. thatC. untilD. because8. I’ll go swimming with you if I ________ free tomorrow.A. will beB. shall beC. amD. was9. In the exam, the ________ you are, ______ the _______ mistakes you will make.A. careful; littleB. more careful; fewestC. more careful; fewerD. more careful; less10. You should finish your lessons _______ you go out to play.A. beforeB. afterC. whenD. while11. I hurried _____ I wouldn’t be late for class.A. sinceB. so thatC. as ifD. unless12. When you read the book, you’d better make a mark _______ you have any questions.A. whichB. thatC. whereD. though13. The teacher raised his voice _______ all the students could hear him.A. forB. so thatC. becauseD. in order14. He took off his coat _______ he felt hot.A. becauseB. asC. ifD. since15. It is ______ that we’d like to go out for a walk.A. a lovely dayB. too lovely a dayC. so lovely a dayD. such lovely a day16. Mary had ______ much work to do that she stayed at her office all day.A. suchB. soC. tooD. very17. _______ I felt very tired, I tried to finish the work.A. AlthoughB. BecauseC. AsD. As if18. ______ the day went on, the weather got worse.A. WithB. SinceC. WhileD. As19. ______ well you can drive, you must drive carefully.A. So long asB. In order thatC. No matter howD. The moment20. Write to me as soon as you ________ to Beijing.A. will getB. getC. gettingD. got二. 根据中文意思完成下列英语句子1. 不管他跟我开什么玩笑，我都不生气。
状语从句状语从句用来修饰主句中的动词，副词和形容词的从句叫状语从句。
根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句，原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。
1. 时间状语从句(1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。
例如：It was raining hard（rain hard 下大雨）when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along（沿着走）the lake, he sang happily.He had learned a little Chinese before he came to China.After he finished middle school, he went to work in a factory.(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。
例如：I’ll ring you up as soon as I get to New York.I will tell him everything when he comes back.He won’t believe it until he sees it with his own eyes.(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。
如果主句用否定式，其含义是“直到……才……”, “在……以前不……”, 谓语动词可用瞬间动词。
例如：The young man read till the light went out（熄灭）.Let’s wait until the rain stops.We won’t start until Bob comes.Don’t get off（从下来）until the bus stops.【Till是指直到某一特定事件发生的时候，而在那个时刻之后，该事情或状况仍将持续。
初中英语状语从句教案及精品练习讲解第一章：状语从句概述1.1 定义状语从句是英语中的一种从句，用来修饰动词、形容词、副词或整个句子，表示时间、地点、原因、条件、目的、结果等。
1.2 分类1.2.1 时间状语从句例如：When I got home, I found my keys lost.1.2.2 地点状语从句例如：Wherever you go, I will go with you.1.2.3 原因状语从句例如：Because you are ill, you should stay at home.1.2.4 条件状语从句例如：If it rns, we will cancel the trip.1.2.5 目的状语从句例如：To improve your English, you should practice speaking every day.1.2.6 结果状语从句例如：You study hard, you will succeed.第二章：时间状语从句2.1 定义时间状语从句表示时间，用来修饰动词、形容词、副词或整个句子。
2.2 连接词2.2.1 when例如：When I got home, I found my keys lost.2.2.2 while例如：While I was cooking, she was reading.2.2.3 until例如：I will wt until he es back.2.2.4 once例如：Once you arrive, call me immediately.2.2.5 if例如：If it rns, we will cancel the trip.2.3 精品练习（1）选择正确的连接词完成句子：a. I was reading a book _______ I heard the bell.b. She wted _______ her husband came back.c. Don't go out _______ you have finished your homework.d. I will call you _______ I arrive at the rport.e. If you study hard, you will pass the exam.第三章：地点状语从句3.1 定义地点状语从句表示地点，用来修饰动词、形容词、副词或整个句子。
状语从句状语从句用来修饰主句中的动词，副词和形容词的从句叫状语从句。
根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句，原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。
1. 时间状语从句(1)时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。
例如：It was raining hard（rain hard 下大雨）when got to school yesterday.While he was doing his homework, the telephone rang.As he walked along（沿着走）the lake, he sang happily.He had learned a little Chinese before he came to China.After he finished middle school, he went to work in a factory.(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。
例如：I’ll ring you up as soon as I get to New York.I will tell him everything when he comes back.He won’t believe it until he sees it with his own eyes.(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。
如果主句用否定式，其含义是“直到……才……”, “在……以前不……”, 谓语动词可用瞬间动词。
例如：The young man read till the light went out（熄灭）.Let’s wait until the rain stops.We won’t start until Bob comes.Don’t get off（从下来）until the bus stops.【Till是指直到某一特定事件发生的时候，而在那个时刻之后，该事情或状况仍将持续。
状语从句状语从句用来修饰主句中的动词，副词和形容词的从句叫状语从句。
根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句，原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。
1. 时间状语从句⑴时间状语从句常用when, as, while, before, after, since, till, until, as soon as 等连词来引导。
例如：It was raining hard ( rain hard 下大雨) when got to school yesterday.While he was doing his homework, the telepho ne rang.As he walked along (沿着走) the lake, he sang happily.He had lear ned a little Chin ese before he came to China.After he finished middle school, he went to work in a factory.(2) 在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。
例如：I ' ll ring you up as soon as I get to New York.I will tell him everyth ing whe n he comes back.He won ' t believe it until he sees it with his own eyes.(3) 在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是一直到……时”谓语动词只能用延续性动词。
如果主句用否定式，其含义是直到……才……”,在…••…以前不……”,谓语动词可用瞬间动词。
例如：The young man read till the light went out (熄灭)Let ' s wait until the rain ops.We won' t start until Bob comes.Don' get off (从下来) until the bus stops.【Till是指直到某一特定事件发生的时候，而在那个时刻之后，该事情或状况仍将持续。
Until是指直到某一特定事件发生的时候，而讲话的人在自己心里认为，在那个时刻之后，该事情或该状况将中止 (不怎么可能持续)。
固定组合里from morning till night，till/until是不能替换的，】2. 条件状语从句(1) 条件状语从句通常由if, unless引导。
例如：What shall we do if it snows tomorrow?Don' t leave the buildi ng uni ess I tell you to.(2) 在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。
例如：I ' ll help you with your English if am free tomorrow.He won ' t be late uni ess he is ill.(3) 祈使句+ and (or)+陈述句”在意思上相当于一个带有条件状语从句的复合句。
例如：Hurry up, or you ' ll be late. =If you don ' t hurry up, you ' ll be late.Study hard and you will pass the exam. =If you study hard, you will pass the exam.3. 原因状语从句(1)原因状语从句通常由because, since, as引导。
例如：He didn ' t come to school becaus e was ill.As it is raining, we shall not （不得；不应该）go the zoo.Since you can ' t an swer the questi on, I ' ll ask some one else.⑵because表示直接原因，语气最强。
Because引导的原因状语从句多放在主句之后。
回答由why提出的问题，只能用because As和since语气较弱，一般用来表示明显的原因。
由as和since引导的原因状语从居多放在句首。
例如：----- Why ar en' t going there?----- Because I don ' t want to.As he has no car, he can ' t get there easily.Since we have no money, we can ' t buy it.⑶because和so不能同用在一个句子里。
4. 结果状语从句⑴结果状语从句由so…that, such …that, so引导。
例如：He is so poor that he can ' t buy asasonf（和too...to...句型的转换复习）She is such a good teacher that everybody likes her.My pencil fell under the desk, so that I couldn ' t see it.⑵so…that语such...that可以互换。
例如：在由so...that引导的结果状语从句中，so是副词，与形容词连用。
其结构是：..'.so +形容词（副词）+ that +从句”例如：He was so glad that he couldn ' t say a word.The hall is so big that it can hold 2,000 people.Mother lives so far away that we hardly ever （几乎不，从来不）see her.在由such…that引导的结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词；名词前面可以带形容词，也可不带。
如果是单数可数名词，前面需加不定冠词a或an。
例如：It was such a hot day that n obody wan ted to do anything.He had such long arms that he could almost touch the ceili ng.（天花板）He made such rapid progress that he did very well in the mid-term.有时上述两种结构是可以互换的。
例如：It was such a won derful film that all of us wan ted to see it aga in.=The film was so won derful that all of us wan ted to see it aga in.It is such an importa nt match that no body wants to miss it.=The match is so importa nt that n obody wants to miss it.⑶如果名词前由many, much, little, few等词修饰时，只能用so,不用such。
例如：Soon there were so many deer that they ate up all the wild roses.He has so little time that he can go to the cinema （去看电影）with you.5. 比较状语从句比较状语从句通常由as…as,比较级+ than ••等连词引导。
例如：Tom runs faster tha n Joh n does.This classroom is as big as that on e（is）.6. 目的状语从句We started early so that we could catch the first train.（动词不定式作目的状语的转换练习）He studies hard so that he could work better in the future.（和不定式短语so as to 的转换练习）We used the computer in order that we might save time.（和不定式短语in order that 的转换练习）（2）so that既可引导目的状语从句，又可引导结果状语从句。
区别这两种从句的办法有两个：1）目的状语从句里往往带有情态动词can, could, may, might等。
2）从意思上看，目的状语从句往往表示的目的很明确。
例如:I 'llspeak slowly so that every one of you can understand well .（目的状语从句）Jack is badly ill so that he has to rest. （结果状语从句）He ran quickly so that he won the race . （结果状语从句）He ran quickly so that he could win the race , （目的状语从句）7. 让步状语从句（1）让步状语从句通常由although, though等连词引导。
例如：Though he is young, he knows a lot.Although I am tired, I must go on working.（复习go on doing,go on to do）⑵although（though）不能用在同一个句子中。
例如：我们不能说：Though it was raining hard, but he still went out. 应该说：Though it was raining hard, he still went out. 或It was raining hard, but he still went out.⑶even if/even though表示"即使。
