1、,His job is important.,What he does is important.,主语从句的定义：,主语,在句中充当主语的从句叫做主语从句。,导,Subject Clauses 主语从句,1.What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. 2. .it was not clear whether the shape would last or not. 3. What is even
2、 more important is that as the earth cooled down, water began to appear on its surface. 4. It was not immediately obvious that water was to be fundamental to the development of life. 5.What many scientist believe is that the continued presence of water. 6.Why they suddenly disappeared still remains
3、a mystery. 7. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.,Task1: Find the sentences which are subject clause in the reading passage, then underline the subject clauses.,思,从属连词 that , whether，if 连接代词 who(ever), whom(ever), w
4、hich(ever), what(ever)， whose 连接副词 where ,when ,why ,how,Task2：主语从句的引导词：,考点一：连接词的选用,活学活用 _we understand things has a lot to do with what we feel.【2015北京】A.Where B.How C.Why D. When _ well go camping tomorrow depends on the weather. A.If B. Whether C. That D. Where _well go camping tomorrow has kept
5、us all excited the whole day.A. If B.Whether C.That D.Where _ makes mistakes must correct them. A. What B. That C. Whoever D. Whatever,议、展、评,B,C,C,B,考点二： it 作形式主语,(1) It的用处：为了避免主语冗长和句子_, 经常用it作_,主语从句放在_作真正的主语。 Eg:That he will refuse this piece of advice is impossible.（用it做形式主语改写句子） It is impossible
6、that he will refuse this piece of advice.,头重脚轻,形式主语,句末,It+be+_+that从句(obvious, true, natural, surprising, wonderful, possible, likely, certain, probable) Eg:显然他撒谎了。_ 特别注意：It is important / natural / necessary / impossible/unbelievable/incredible/strange that.句型中, 主语从句应使用_语气, 即用“(_)+ 动词原形”的形式。 Eg:我们学
7、好英语是必要的._,(2)it 作形式主语常见的结构,形容词,It was obvious that he told a lie.,虚拟,should,It was necessary that we (should) learn English well.,It+be+_+that从句,(no wonder, an honor, a good thing, a pity, no surprise, etc.). Eg:他很懒.。难怪他这次考试不及格。_,名词或名词词组,He is very lazy. It was no wonder that he failed in the exam.,
8、It+be+_+that从句,(said, reported, thought, expected, decided, announced, arranged, etc.). Eg:据报道，有五个人被埋在废墟中。_ 特别注意:在 It + be +suggested/advised/ordered/requested/insisted/required/demanded 中, that从句的谓语也应该用_语气, 即用“(_)+ 动词原形”的形式。 Eg:人们建议应该采取更多措施来保护环境。_,过去分词 V-ed,It was reported that five people were bur
9、ied in the ruins.,虚拟,should,It is suggested that more measures (should) be taken to protect our environment.,It+_+(连接词不固定)从句,（seem/happen/appear/matter/turn out/occur to/makes no difference等） Eg:你今天来或者明天来都没关系。_,不及物动词及短语,It doesnt matter whether you come today or tomorrow.,It + _+ _+that从句,Eg, It sur
10、prised/ amazed me that he should talk to his teacher in such a rude manner. (此处should表？),vt. (及物动词),O. (宾语),考点三： 主从的语序,陈述语序 即 _ 【活学活用】 _（他什么时候会来）is not known. Why was Lily late is not important.（改错）,连接词+ 主语+谓语+其它,When he will come,Lily was, 注意问题: (1)区分what和that,_you said yesterday is right._she is s
11、till alive is a great news to all of us. 总结：what在从句中_成分，如_；that在从句中_成分,只起_作用_意义_省略。,That,What,无,连接,不充当,主、宾、表,充当,不可,(2) if与whether,_ he will go to Beijing or not was not clear. It was not clear _ he will go to Beijing. 总结: 如果whether从句位于_，或者与_连用时，不能用if替换如果句中借用了_作形式主语，引导词可以用_替换whether。,Whether/ if,Whet
12、her,句首,or not,it,if,(3) 主谓一致,When he will come _(be) a puzzle.When they will start and where they will go _(be) decided so far.When and where they will go _(be) decided so far.,What he needs_ that book. What he needs _some books.,are,is,is,are,is,总结： 从句作主语时，谓语动词多用_形式。 如果由and连接两个或两个以上的主语从句作主语时，谓语动词用_
13、形式；由两个或多个连接词引导一个主语从句时，谓语动词用_ what 引导的主语从句，主句动词的单复数形式由_决定.（what 用法较特殊),单数,单数,复数,表语,检,1. _ he didnt attend the meeting yesterday wasnt quite clear. 2. _ team will win the match is still unknown. 3. _ comes to the party will receive a present. 4. Its reported _ three people were killed in the accident
14、5. _ he solved the problem successfully interested all of us. 6. _ is to be sent there to solve the problem hasnt been decided.,I. 用适当的连接词填空，使句子意思完整。,Why,Which,Whoever,that,How,Who/what,II. 下列各句中均有一处错误，请改正。,1. That the old mans son wanted to know was where the gold had been hidden.2. Whether the 200
15、8 Olympic Games will be held in Beijing excited the whole nation.3. Whatever leaves the room last ought to turn off the lights.4. How our spring sports meet will be held or not this week is not known yet.,What,Whether,Whoever,That,5. Its strange when he should have gone away without telling us.6. Wh
16、en and where the meeting will be held still remain a question.7. It was requested that everyone made a speech at the meeting.,remains,make,that,III 单项选择,1._ has helped to save the drowning girl is worth praising.A. Who B. The one C. Anyone D. Whoever 2. It was_ he said _ disappointed me.A. what ; th
17、at B. that; that C. what; what D. that; what 3. _ was that he could go back to his hometown.A. That really excited him B. What really excited himC. Which really excited him D. That excited him really 4._ he made an important speech at the meeting was true.A. That B. Why C. What D. How 5. It worried
18、her a bit _ her hair was turning gray.A. whether B. that C. what D. when,B,A,B,A,D,6. Does _ matter if he cant finish the job on time? A. this B. that C. he D. it 7. _ is a fact that English is being accepted as an international language. A. There B. This C. That D. It 8. _ what they told me really
19、true? A. Has B. Is C. Does D. Have 9. It matters little _ a man dies, but _ matters much is_ he lives. A. how; what; how B. how; it; how C. why; it; why D. that; what; that 10. _she couldnt understand was_fewer and fewer students showed interest in her lessons. A. What; why B. That; what C. What; be
20、cause D. Why; that,A,A,B,D,D,11. What made her parents so angry? - _she had failed in the examination.A. As B. Because C. Since D. That 12. It is necessary that a college student _at least a foreign language. A. masters B. master C. mastered D. will master 13._ we go swimming every day _ us a lot of good.A. If.do B. That.do C. If.does D. That.does,D,B,D,五、Homework,完成语法日日清,Thank you!Good-bye!,
