英语语法主语从句公开课课件

规律五、what 引导的主语从句，可根据 表语决定主句动词的单复数形式。
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他是不是我的孩子仍然是个问题。
Whether he is my child remains a
question.
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我最喜欢的 是你的发型。
What I like most is your hairstyle.
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That he will win the match is certain.
It is certain that he will win the match.
注解：一般来说主语从句都是放在 句首 , 但有时为了使句子 保持平衡 ，避免"头重脚轻", 常用 it 作 形式主语 ，从而把主语从句放在 后面 ．
+(should) +do… *_I_t _is_p__o_ss_i_b_le__th__a_t (很可能)she will come back tomorrow.
*_I_t _is_o_b__v_io_u_s__th_a_t_(很明显) he is an English.
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1. 很可能他会申请这项工作的。 It is likely that he will apply for the job.
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例1.When will he come is not known. 正：When he will come is not known.
规律一、主语从句一律用陈述语序， 即主语在前，谓语在后。
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例2. He will not come to the meeting
this evening is true. 正：That he will not come to the
• Whatever I have is yours.
• Whichever you want is yours.
whatever=anything that whoever=anyone who
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引导词
4) 连接副词when, where, how ,why
• When we will leave hasn’t been decided. • How she keeps healthy is a secret. • Why he cries is not clear. • Where the meeting will be held is not
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我需要的就 是休息。
What I need is rest.
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杜拉拉如何成 功取决于她的 勤奋。
How Du Lala becomes successful depends on her hard work.
Leabharlann Baidu
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雨天要穿雨鞋（rain shoes）是常识。
*_I_t_i_s_r_e_p_o_r_t_ed__t_h_a_t_(据报道)20 people were
killed in the accident. *__It__is_s_u_g_g_e_s_t_ed__t_h_a_t_(建议)we should eat more
vegetable and do more exercise.
to send the letter.
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1. 好像是我错了。 It appears that I am wrong.
2. 碰巧他得去参加一个会议。 It happened that he had to attend a meeting.
3. 我突然想起他会说英语。 It occurs to me that he can speak English.
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找出主语从句
That he will succeed is certain. Whether he will come makes no
difference. What we need is more time.
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引导词
1) 从属连词that和whether：
• That he will come is certain.
• 2.明确it作形式主语和形式宾语、代替主语 从句及宾语从句的用法，及其与强调句的 区别。
• 3.区分that引导的同位语从句及定语从句。
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理解主语从句
他通过了考试让老师很高兴。
He passed the exam. It made the teacher happy. He passed the exam made the teacher
Noun clauses as the subject
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什么是主语？
I like English. The train left.
主语：是一个句子说明的人或事物,即叙
述的主题，一般位于_句__首___ 。
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找出主语
Jim is good at playing the piano. (名词 To see is to believe. （不定式） ） Smoking is bad for health. （动名词） What he has said is true. (从句）
When they will start and where they will go __a_re__(be)still unknown.
When and where the meeting will begin __h_a_s_ (have) not been decided yet .
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例5 1. What he needs _i_s_ that book. 2. What he needs _a_re__some books.
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这样就构成了下面一些常用句型:
1) It is + n. +that
It is a pity/shame that... 可惜的是……
It is a surprise that… 令人吃惊的是…
It is a fact that…
事实是…
It is common knowledge that … …是常识
happy. That he passed the exam made the teacher happy.
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理解主语从句
他何时要来还不清楚。 When will he come? It is not clear. When will he come is not clear.
When he will come is not clear.
known.
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•主语从句的特点：
1.引导词：
从属连词 that, whether； 连接代词 who, what, which；
whoever, whatever, whichever; 连接副词 when, where, how和why。
2. 语序：陈述句语序
3. 在主语从句中只能用whether,不能用if
It hit/struck/occurred to me that…我突然想
起…
It appears/seems that… 似乎，好像…
It turned out that… 原来…
*_I_t_h_a_p__p_e_n_e_d_t_h_a_t_(刚好)I was out yesterday.
*_I_t_o_c_c_u_r_r_e_d_t_o_m__e_t_h_a_t_(我突然想起)I forgot
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1.据说他已经去了上海。 It’s said that he has gone to Shanghai. 2. 众所周知台湾是中国的一部分. It is known to all that Taiwan is part of China. 3. 有人建议我们应该多做运动。 It is suggested that we should take more exercise.
规律三、whether 可以引导主语从句， 放在句首，但if不能
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例4. When he will come are a puzzle.
正：When he will come is a puzzle.
规律四、主语从句的谓语动词多用 单数第三人称形式。
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When the meeting will begin _h_a_s__ (have) not been decided yet .
*__It__is_a__p_i_ty__th_a_t__(很可惜)we lost the match. *__It__is_a__f_a_ct__th_a_t_(这是事实)he cheated in the exam.
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1. 令人吃惊的是他改变了主意。 It is a surprise that he changed his mind.
meeting this evening is true.
规律二、连词that 在从句中无实际意义， 但不能省略。
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例3. If the meeting will be put off has not been decided yet.
正： Whether the meeting will be put off has not been decided yet.
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主语从句 (Subject Clause)
在主从复合句中充当主语的从句
就是主语从句, 它是名词性从句之
一。引导主语从句的连接词有：
从属连词that, whether；连接代词
who, what和which；连接副词
when, where, how和why。
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考纲专题解读
• 1.了解名词性从句的基本用法，掌握名词性 从句的引导词及引导词在名词性从句中的 作用，辨析that与what,if与whether等引导 词的用法。
4. 原来他是Mary的朋友。 It turned out that he was Mary’s friend.
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4) It + be +过去分词+从句 It is said that... 据说…… It is known to all that... 众所周知…… It is reported that... 据报道…… It is believed that...据相信……;人们相信…… It is suggested that + (should）do... 建议……
• Who will go makes no difference. • What we need is more time. • Which book I shall choose hasn’t
been decided.
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引导词
3)连接代词whoever, whatever, whichever • Whoever comes is welcome.
2. 的确我犯了个错误。 It is true that I made a mistake.
3. 有必要我们要学习英语。 It is necessary that we should learn English.
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3) It +不及物动词+that
It happened that...
碰巧……
2. 真可惜你错过了这么一个好机会。 It is a pity that you missed such a good
chance. 3. 事实是我们周围的污染正变得越来越严重。
It is a fact that the pollution around us is becoming more and more serious.
• Whether he will come is uncertain.
_t_h_a_t_ 只起引导作用，本身无意义，不充当
任何分，但不能省略。
whether 不做成分，表“__是__否___”。
在主语从句中只能用 _w_h_e__t_h_e_r_,不能用i__f_
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引导词
2) 连接代词who, what, which
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2) It is + adj. +that It’s certain that… 肯定… It is possible/likely that... 很可能…… It is obvious/clear that… 很明显… It is true that…的确…
It is necessary \important \natural\... that…