《初中英语从句讲解》由会员分享，可在线阅读，更多相关《初中英语从句讲解（45页珍藏版）》请在金锄头文库上搜索。
1、知识要点：名词性从句涉及：主语从句、表语从句、宾语从句和同位语从句。引导名词性从句的连词有：A.连词：that, whether, if（这三个词都不作从句的成分，同步，that无含义，而whether和if都表“与否”）B.疑问代词：who, whom, whose, what, whichC.疑问副词：when, where, why, how（一）主语从句：在复合句中充当主语的从句。1.that引导主语从句that引导主语从句时不同于其她的连词，既无词义也不作成分，只起单纯的连接作用，且一般不可以省。为了强调that引导的主语从句而置之于句首时，that不可省。That the driv
2、er could not control his car wasobvious.That she was chosen made us very happy.That he will come is certain.That he would take the risk is true.That he should have married her isnt surprising.一般，that引导主语从句时用it做形式主语，把从句置于句尾，此时that有时可省。例如：It was obvious that the driver could not control his car.It mad
3、e us very happy that she was chosen.It is certain that he will come.It is true that he would take the risk.It isnt surprising (that) he should have married her.如果以that从句为主语的句子是疑问句，就只能用先行词it构造。例如：Is it certain that he will come?Is it true that he would take the risk?it做形式主语有如下几种不同的构造：(1)It + be + 形容词
4、+ that-从句It is likely that he will come.It is strange that she has ever trusted him.It is important that he (should) attend the meeting.It is best that he (should) go.此句型在表达惊讶、喜悦、遗憾等感情色彩时，that从句中的谓语动词也常用 (should) + v原形。It is strange that no one should haveobjectedto the plan.(2)It + be +名词+ that-从句I
5、t is common knowledge that the whale is not a fish.Its a pity that he should have catched the train.(3) It + be + -ed分词 + that从句It is said that he is a famous writer.It is reported that there will be a storm this afternoon.在表达建议、规定、命令等意义的被动构造中，that从句中的谓语动词常用(should) do。（参见虚拟语调部分）It is suggested that
6、 the meeting (should) be held this afternoon.It is demanded that he (should) leave at once.(4) It + seem/happen/appear等不及物动词 + that从句。（look不接that从句，它接to be构造或形容词）It seems that he is wrong.It appears that they are in urgent need of help.He looks (to be) surprised/happy/sad.2. whether引导主语从句，意为“与否”，只起连
7、接作用，不充当任何成分。（置于句首时必须用whether引导，置于句尾时，间或可用if。）Whether he will win the game is not clear.Whether he will come isuncertain.Whether she comes or not doesnt concern me.It is not clear whether/if he will come.It was uncertain whether he would come.3. 连词代词what, who, which, whose等引导的主语从句。这些连接代词作用相称于代词，在从句中担
8、当主语、宾语、表语、定语等。What we need is more time.Who wasresponsiblefor the accident is not yet clear.Whose book it is not important.Which school you want to go matters much.4.连接副词when, where, why, how引导的主语从句。这些连接副词相称于副词，在从句中充当状语。Why he did this is not known.When he will come is still unknown.It is not known
9、why he did this.How he succeeded is unknown to us.Where we should hold the meeting needs to be discussed.注意：wh-引导的主语从句也常用it作形式主语。5.也可用whatever,whoever,whomever,whenever,wherever等词引导主语从句，表达“无论什么”、“无论谁”、“无论何时”、“无论在（到）哪里”等。Whoever told you to give up smoking was quite right.Whatever he gave you should
10、be handed in.Whoever told you that waslying.Whoever comes is welcome.专项训练：1._ makes mistakes must correct them.A. What B. That C. Whoever D. Whatever2. It worried her a bit _ her hair was turning grey.A. while B. that C. if D. for3.When and why he came here _ yet.A. is not known B. are not known C.
11、has not known D. have not known4._ is no reason for dismissing her.A. Because she was a few minutes late B. Owing to a few minutes lateC. The fact that she was a few minutes late D. Being a few minutes late5._Tom liked to eat was different from _.A. Thatthat you had expected B. What that you had exp
12、ectedC. Thatwhat you had expected D. Whatwhat you had expected6._ we go swimming every day _ us a lot of good.A. If.do B. That.do C. If.does D. That.does7.It _ Bob drives badly.A. thinks that B. is thought what C. thought that D. is thought that8.Its uncertain _ the experiment is worth doing.A. if B
13、. that C. whether D. how9._ the boy didnt take medicine made his mother angry.A. That B. What C. How D. Which10._ we cant get seems better than _ we have.A.What, what B. What, that C. That, that D. That, what(后设答案，人们不要偷看(o)哦，(*_*) 嘻嘻)KEYS1. C 2.B 3.A 4.C 5.D 6.D 7.D 8.C 9.A 10.A（二）表语从句：在复合句中充当表语。1.
14、that在引导表语从句时无含义，不作成分，一般不省。1)表达事实、真理等的实际内容。The fact is that he is lying.Theoddsare that he will not do it.2）表达某人的意见、信念等的实际内容。Ourbeliefis that things will improve.The trouble is that we are short of money.2. whether引导表语从句（不可用if)。His first question was whether Holmes had arrived yet.The question is whe
15、ther people will buy it.3. 连接代词who, whom, whose, what, which引导的表语从句。This is what I want.The question is who can be chosen to bemanagerof the company.My question is which of them is better.4. 连接副词when, where, why, how引导的表语从句。The problem seemed how we could make him understand it.The question is where we should go.5. as if, as though引导的表语从句（常用虚拟语调）。He looks as if he were angry.It looks as if its going to rain.
