《主语从句讲解.ppt》由会员分享，可在线阅读，更多相关《主语从句讲解.ppt（37页珍藏版）》请在三一文库上搜索。
1、Grammar,Grammar,主语从句,名词性从句包括： 宾语从句：介宾结构；动宾结构 表语从句：系表结构(系动词后面跟一个从句) 主语从句: 一个句子做主语 同位语从句：对名词进行解释说明,判断下列从句： 1.China is no longer what she used to be. 2.The question remains whether they will be able to help us. 3.It seemed as if I couldnt think of the right word. 4.The reason why I study hard is that I
2、 want to go to a key university. 5.They believe in that she must still be single. 6.I know nothing about him except that he is living in Beijing 7. I dont know whether hes free or not. 8. Mary asked whether I was doing my homework or not. 9. Im thinking of whether we should go fishing. 10. We are wo
3、rried about whether it will rain tomorrow.,表语从句,宾语从句,(1). 连接词：that 在句子中不充当任何成分，无意义，不可省略 That he will win is certain. That he got the first prize made his parents very happy. That China has become strong is certain. That they love each other is obvious. That he played computer games into night made h
4、is parents disappointed.,(2). 连接词 whether 在句中不充当成分，意为“是否” Whether we go by train or by boat makes no difference. Whether life exists on other planets is not clear. Whether hell come here isnt clear. Whether the old bus station should be replaced with a modern hotel or not is under discussion.,(3). 连
5、接副词 when(时间), where(哪里), why(为什么), how(怎么；如何)有词义，在从句中担任状语。 Why Chen Lin committed suicide has not been clear yet. How this happened is not clear to anyone. Where he found the treasure remains a mystery. When we will hold the graduation ceremony has not been decided yet. When they will leave is not d
6、ecided.,(4). 连接代词：who(谁，主格); whom(谁；宾格); whose(谁的); what(什么事/话); which(哪一个); whoever(无论谁), whatever(无论什么), whichever(无论哪一个) 在句子中担任主语，宾语，表语或定语,Who will host the meeting hasnt been decided yet. Which plan is better should be discussed. Whoever comes to China is welcome. Whatever you do in your spare t
7、ime should do no harm to others. Whoever breaks the law will be punished.,主语从句能用it做形式上的主语(二),注意: 由that 引导的主语从句有时为了使句子结构平衡, 避免 “头重脚轻”, 常用 it 作形式主语, 而把从句放在后面。 例如:,1. That he will refuse this piece of advice is impossible. _ _ 2.That they should like each other is natural. _,*it为形式主语,It is natural that
8、 they should like each other.,It is impossible that he will refuse this piece of advice.,这样就构成了下面一些常用句型: 1) It is + n. +从句 It is a pity/shame that. 遗憾的是 It is a surprise that令人惊奇的是 It is a fact that 是事实 It is common knowledge that 是常识 *_(很遗憾)we lost the match. *_(这是事实)he cheated in the exam.,It is a
9、 pity that,It is a fact that,2) It is + adj. +从句 Its certain that 肯定 It is possible that. 很可能 It is unlikely that. 不可能 It is obvious that 很明显 It is necessary important natural. that *_(很可能)she will come back tomorrow. *_(很明显)this measure is effective.,+(should) +do,It is possible that,It is obvious
10、that,3) 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.据信;人们相信 It is suggested that + (should）do. 建议 It must be admitted that必须承认 It cannot be denied that 不可否认 It must be pointed out that需指出的是 *_(据报道)20 people were killed in the accide
11、nt. *_(建议)we should eat more vegetable and do more exercise.,It is reported that,It is suggested that,4) It +不及物动词+从句 It happened that. 碰巧 It occurred to me that我突然想起 _(刚好)I came into the office at that time. _(我突然想起)I forget to sent the letter. 5) It + 及物动词+宾语+that从句 It worried her a bit that her h
12、air was turning grey. It shocked me that he didnt tell anybody where he was.,It happened that,It occurred to me that,主语从句中应注意的问题,(一). 语序应是陈述句语序 How he managed to survive in the forest interested everyone present. When he will come is not known. What he needs is an English dictionary. (二). 谓语动词的单复数 W
13、hen we shall hve our sports meeting _(have) not been decided yet. What I need _(be) money. What I need _(be) books. When they will start and where they will go _(have) not been decided yet. When and where the meeting will be held _(have) not been decided.,has,is,are,have,has,(三) if/wheter 在主语从句中的用法
14、If the meeting will be put off has not been decided yet.,Whether the meeting will be put off has not been decided yet.,注意：whether 可以引导主语从句可以放在句首， 但if不能,(四). 判断以下句子是否正确：,They should like each other is natural. That they like each other is natural. It is natural that they like each other.,错误,正确,正确,Tha
15、t引导的主语从句放句首，既不充当成分又无意义，但that不能省去。,找出错误，并给出理由： 1.Where shall we spend the holiday isnt decided. 2.You have made a mistake is a fact. 3. If the policeman will come is not certain. 4. That is certain that we can win.,we shall,Whether,It,That you have,5. It is ordered we should leave at once. 6. Where h
16、e comes from are a mystery. 7. What whether he likes the job is not clear. 8. Who he is and where he is from is important. 9.What he saw is the stars in the sky.,that,is,x,are,are,Exercises :,Part One: 主语从句单选题,1. has helped to save the drowning girl is worth praising.,A.Who B.The one C.Anyone D.Whoe
17、ver,D,2.It was he said disappointed me.,A.what ;that B.that; that C.what;what D.that;what,A,3. well go camping tomorrow depends on the weather.,A.If B.Whether C.That D.Where,B,4. he said at the meeting surprised everybody present.,A.What B. That C.The fact D.The matter,A,5. was to return to school.,
18、A.That really interested him B.What really interested him,C.Which really interested him D.That interest him really,B,6. makes mistakes must correct them.,A.What B.That C.Whoever D.Whatever,C,7. your men have been on my land without permission.,A.It seems that B.There seems to be,C.That seems D.It se
19、ems for,A,8.It has always puzzled me the old man lied a red,silk ribbon on the young tree.,A.that B.why C.where D.what,B,_ he made an important speech at the meeting was true. A. That B. Why C. What D. How,2. _well go camping tomorrow depends on the weather . A If B Whether C That D Where,Choose the
20、 best choice,3. It worried her a bit _ her hair was turning gray. whether B. that C. what D. when 4.What I say and think _ none of your business. A. is B. are C. has D have,1. _ you dont like him is none of my business. 2. _ he said at the meeting astonished everybody present 3. _ the 2000 Olympic G
21、ames will be held in Beijing is not known yet. 4. _ well go camping tomorrow depends on the weather. 5. _ leaves the room last ought to turn off the lights.,That,What,Whether,Whether,Whoever,请用恰当的主语从句连词填空: What ,it ,that , whether, whoever,Correct or not?,*When the meeting will be held havent been k
22、nown yet.,. be held hasnt been known yet.,Pay attention:主语从句的谓语用单数形式,10,the cat do,made,What the cat did made the baby cry.,What,cry,Make a sentence,30,1.The question is _ the film is interesting. 2._ we shall attend the meeting hasnt been decided yet.,用whetherif填空,whether,Whether,10,talk about,the
23、use of cell phone,What they are talking about is the use of cell phone.,Make a sentence,30,* If we will have a meeting hasnt been decided yet.,Correct or not?,Whether we will. decided yet.,Pay attention:放在名词性从句句首，表示“是否”，只能用whether, 不能用if,10,report , get the highest points, match It is reported that
24、Yao Ming got the highest points in the match.,Make a sentence,30,Correct or not?,Pay attention:此主语从句缺少成分-宾语，故用作成分的what来引导，而不用that。,What she wants to know is.,*That she wants to know is when the party will be held .,10,Correct or not?,Pay attention:由that引导的主语从句放在句首，that 不能省略。,That he will give up,*He
25、 will give up his job surprises all of us.,10,Translate the sentence,*_（她是否出席会议）is not certain.,Whether she will attend the meeting,20,It makes the teacher angry that the child doesnt know the answer.,teacher angry,Dont know the answer,Make a sentence,30,_ he made an important speech at the meeting
26、was true. A. That B. Why C. What D. How,2. _well go camping tomorrow depends on the weather . A If B Whether C That D Where,3._ is known to us all that America is a developed country . A Which B As C What D It,4. Its known to us all _ a form of energy . A. water is B. that water is C. is water D. that water to 5. It worried her a bit _ her hair was turning gray. A. whether B. that C. what D. when 6.What I say and think _ none of your business. A. is B. are C. has D have,