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名词性从句课件一、名词性从句概述名词性从句是指在句中充当名词的从句，可以用来作主语、宾语、表语、同位语等。
名词性从句在句子中起到连接句子成分的作用，使句子更加丰富多样，表达更加准确清晰。
名词性从句可以分为以下几种类型：1.主语从句：在句中作主语的从句。
2.宾语从句：在句中作宾语的从句。
3.表语从句：在句中作表语的从句。
4.同位语从句：在句中作同位语的从句。
二、主语从句主语从句在句中作主语，常常以it作形式主语，将实际的主语从句放在句子后面。
1. 主语从句的引导词常用的主语从句引导词有：•Who：谁•What：什么•Where：哪里•When：什么时候•Whether：是否2. 主语从句的例句下面是一些主语从句的例句：•What you said is true.（你说的是真的。
）•Where he went is still a mystery.（他去哪里仍然是一个谜。
）•Whether he will come or not is uncertain.（他是否会来还不确定。
）三、宾语从句宾语从句在句中作宾语，常常出现在某些动词、形容词或介词后面。
1. 宾语从句的引导词常用的宾语从句引导词有：•That：引导陈述句类宾语从句•Whether/If：引导陈述句类宾语从句或疑问句类宾语从句•Wh-：引导疑问句类宾语从句2. 宾语从句的例句下面是一些宾语从句的例句：•He said that he would come tomorrow.（他说他明天会来。
）•I wonder if/whether the train has arrived.（我想知道火车是否已经到站。
）•She asked me what my favorite color is.（她问我最喜欢的颜色是什么。
）四、表语从句表语从句在句中作表语，常常出现在系动词后面，用来说明主语的身份、性质、特征等。
1. 表语从句的引导词常用的表语从句引导词有：•That：引导陈述句类表语从句•Whether/If：引导陈述句类表语从句或疑问句类表语从句•Wh-：引导疑问句类表语从句2. 表语从句的例句下面是一些表语从句的例句：•The fact is that he is the winner.（事实是他是赢家。
名词性从句一，名词性从句的概念：1, 相当于名词，分为主语从句、表语从句、宾语从句和同位语从句2，名词性从句的引导词：that, whether, if (一般是宾语从句)，as if(表语从句)，who, whom, whose, what, which, when, where, why, how,以及由how组成的词组，如：how many, how long, how far两组需要注意的连接词that/what1）that和what都可以引导名词性从句，但that是连接词，本身无词义，仅起连接作用，不在从句中担任任何成份；what是连接代词，不仅引导名词性从句，而且在从句中充当一定的成份，如主语、宾语或表语。
e.g: That he stole a bike was true.The important thing is what you do, but not what you say.高考真题：_______ we can't get seems better than _______ we have.A. What; whatB. What; thatC. That; thatD. That; what2）whether和if均可引导动词后的宾语从句，常可互换。
a.在介词后面只能用whether，不能用if。
例如：①This depends upon whether we are determined to do it.b.在动词不定式之前，只能用whether，不能用if。
例如：①He doesn't know whether to stay or not.c.引导主语从句，表语从句，同位语从句时只能用whether。
例如：①It is unknown whether he will come. 他是否来还不知道。
②The question is whether they can take our advice.3.The question whether he'll come is unknown.3）doubt用于肯定结构时，后面用whether/ if引导名词性从句；用于否定结构或疑问结构时，后面用that引导名词性从句。
名词性从句1. 什么是名词性从句名词性从句是指在句子中充当名词的从句。
它可以作主语、宾语、表语、同位语等成分，起着名词的作用。
名词性从句通常由连接词引导，常见的引导词有：that、whether、if、who、whom、whose、which、what等。
2. 名词性从句的类型名词性从句有三种类型：主语从句、宾语从句和同位语从句。
2.1 主语从句主语从句是指在句子中作主语的名词性从句。
它通常由连接词“that”引导，也可以由连接词“whether/if”引导。
主语从句在句子中起到主语的作用，常见的句型有：•That he is late is a problem.（他迟到是个问题。
）•Whether/if it will rain tomorrow is uncertain.（明天是否会下雨还不确定。
）2.2 宾语从句宾语从句是指在句子中作宾语的名词性从句。
它通常由连接词“that”引导，宾语从句常见的动词有：believe、think、know、hope、wonder、ask等。
宾语从句在句子中起到宾语的作用，常见的句型有：•I believe that he is telling the truth.（我相信他在说真话。
）•She asked me if I could help her.（她问我是否能帮她。
）2.3 同位语从句同位语从句是指在句子中作同位语的名词性从句。
它通常由连接词“that”引导，同位语从句一般紧跟在名词之后，用来解释说明该名词的内容。
常见的句型有：•The news that he won the prize is exciting.（他获奖的消息令人激动。
）•I have no idea that he is coming.（我不知道他要来。
）3. 名词性从句的注意事项在使用名词性从句时，需要注意以下几点：•引导词的选择：根据具体语境选择合适的引导词，如主语从句通常使用“that”；宾语从句中的直接引语常用“that”，间接引语用“whether/if”。
名词性从句一．概述：在句子中起名词作用的各种从句统称为名词性从句。
根据它们在句中的语法作用，这类从句又可分为主语从句、表语从句、宾语从句和同位语从句。
二．名词性从句连接词四．if, whether 的区别1.引导主语从句时，如果主语从句放在句首，只能用whether 不能用if 引导，但是如果用it 做形式主语，而把主语从句放在句末时，也可以用if 引导.2.引导宾语从句时常放在动词know, ask, care, wonder 之后，if 和whether 均可。
少数动词，如: leave, put, discuss, doubt 后的宾语从句常用whether.。
3.在介词后面的宾语从句中，在表语从句、同位语从句中，表“是否”，只能用whether；4.w hether 和if 都可以和or not 连用,但是whether 之后可以直接跟or not,而if 不可以。
I don’t know whether or not I will stay.（只能用whether）5.在不定式前只能用whether.如：I can’t decide whether to stay. 我不能决定是否留下。
五．与“命令、要求、建议”等相关的名词性从句中通常用虚拟语气，虚拟语气的构成是“should＋动词原形”或省去should，直接用动词原形。
六．名词性从句以考查引导词为主，同时考查时态，语序，与其它从句的区别以及混同虚拟语气的考查。
一．主语从句1.主语从句定义：在复合句中充当主语的句子叫做主语从句。
That he will succeed is certain.Whether wild life can be well protected is of great importance.Who will go makes no different.Which kind of food is the best is still not certain.What is needed for the space trip is careful preparation.Whoever comes is welcome.How we can help the twins will be discussed at the meeting.When they’ll start the project has not been decided yet.Where he hid the money is to be found out.Why dinosaurs died out remains a puzzle.2.主语从句引导词按照在句中是否做成分主要分为三类：连词that、whether、if 连接代词、连接副词。
名词性从句名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。
因此，名词性从句可分为主语从句、表语从句、宾语从句和同位从句。
（一）引导名词性从句的连接词1、连接代词：who, whose, whom, what, which。
有词义，在从句中担任成分，如主语、表语、宾语、或定语等。
2、连接副词：when, where, why, how。
有词义，在从句中担任成分，作状语。
3、连接词：that, whether, if, as if。
that 无词义，在从句中不担任成分，有时可省略；if (whether), as if虽有词义，但在从句中不担任成分。
注意：连接代词与连接副词在句中不再是疑问句，因而从句中谓语不用疑问式。
连接代词与连接副词在从句充当句子成分，连接词whether 和if（是否），as if（好象）在从句中不充当句子成分，只起连接作用。
根据句义，如果连接代词与连接副词，whether、if 和as if都用不上时，才用that作连接词（that本身无任何含义）。
（二）主语从句1、主语从句在复合句作主语。
e.g. Who will go is not important.2、用it作形式主语，主语从句放在句末。
e.g. It doesn’t matter so much whether you will come or not.3、that引导主语从句时，不能省略。
e.g. That he suddenly fell ill last week made us surprised.（三）表语从句1、表语从句在复合句中作表语，位于系动词之后。
e.g. The question was who could go there.2、引导表语从句的连接词that有时可省去。
e.g. My idea is (that) we can get more comrades to help in the work.（四）宾语从句1、宾语从句在复合句中作宾语。
引导宾语从句的连词that一般可省略。
e.g. I hope (that) everything is all right.2、介词之后的宾语从句，不可用which或if连接，要分别用what或whether。
e.g. I’m interested in whether you’ve finished the work..I’m interested in what you’ve said.3、whether与if都可以引导宾语从句，常可互换。
但下面情况不能互换。
①宾语从句是否定句时，只用if，不用whether。
e.g. I wonder if it doesn’t rain.②用if 会引起误解，就要用whether。
e.g. Please let me know whether you want to go.（此句如果把whether改成if，容易当成条件句理解）③宾语从句中的whether 与or not直接连用，就不能换成if；不直接连用，可换。
e.g. I don’t know whether or not the report is true.I don’t know whether/ if the report is true or not.④介词后的宾语从句要用whether引导。
whether 可与不定式连用。
whether也可引导主语从句、表语从句、同位语从句，还可引导让步状语从句，以上均不能换成if。
但引导条件从句时，只能用if，而不能用whether。
e.g. It depends on whether we have enough time.They don’t know whether to go there.Please come to see me if you have time.（五）同位语从句同位语从句在句中作某一名词的同位语，一般位于该名词（如：news, fact, idea, suggestion, promise等）之后，说明该名词的具体内容。
e.g. I have no idea when he will be back.The fact that he had not said anything surprised everybody.练习：名词性从句一、判断下列各句哪句含有名词性从句，并指出是什么从句：1. China is no longer what it used to be.2. The truth that the earth turn around the sun is known to all.3. It was snowing when he arrived at the station.4. How he persuaded the manager to change the plan is interesting to us all.5. The news that they had won the game soon spread over the whole school.6. The news that you told me yesterday was really disappointing.7. That is where Lu Xun used to live.8. He spoke as if he understood what he was talking about.9. Do you remember the teacher who taught us English at middle school?10. I wonder why she refused my invitation.二、用适当的连词填空：1. I can’t decide ____________ dictionary I should buy.2. That’s ____________ he refused my invitation.3. I am very interested in ____________ he has improved his pronunciation in such a short time.4. ____________ we need is more time.5. The fact ____________ she had not said anything at the meeting surprised everybody.6. ____________ and ____________ they will meet has not been decided yet.7. Please tell me ____________ you are waiting for.8. Is that ____________ you are looking for?9. Would you please tell me ____________ the nearest post office is?10. I don’t know ____________ he will agree to the plan or not.三、选择填空：1. Do you see _____ I mean?A. thatB./C. howD. what2. Tell me_____ is on your mind.A. thatB. whatC. whichD. why3. We must stick to _____ we have agreed on.A. whatB. thatC. /D. how4. Let me see _____.A. that can I repair the radioB. whether -I can repair the radioC. I can repair the radioD. whether can I repair the radio5. Keep in mind _____.A. that the teacher saidB. what did the teacher sayC. that did the teacher sayD. what the teacher said6. Could you advise me _____?A. which book should I read firstB. what book should I read firstC. that book 1 should read firstD. which book I should read first7. He was criticized for _____.A. he had done itB. what he had doneC. what had he doneD. that he had done it8. Would you kindly tell me _____?A. how can I get to the Beijing Railway StationB. how I can get to the Beijing Railway StationC. where can I get to the Beijing Railway StationD. whether can I get to the Beijing Railway Station9. Mrs. Smith was very much impressed by _____.A. what had she seen in ChinaB. that she had seen in ChinaC. what she had seen in ChinaD. which had she seen in China10. We took it for granted ___A. that they were not comingB. that were they not comingC. they were coming notD. were they not coining11. I really don't know _____A. I should do nextB. what should I do nextC. what I should do nextD. how I should do next12. I'm afraid _____.A. the little girl will have to be operated onB. that will the little girl have to operate onC. the little girl will have to operate onD. that will the little girl have to be operated on13. She walked up to _____ .A. where did I standB. where I stoodC. I stood thereD. where I stood there14. Can you tell me _____?A. who is that gentlemanB. that gentleman is whoC. who that gentleman isD. whom .is that gentleman15. We'll give you _____.A. that do you needB. what do you needC. whatever you needD. whether do you need16. They want us to know _____ to help us.A. what can theyB. what they canC. how they canD. how can they17. We must put _____ into practice.A. what we have learnedB. that we have learnedC. that have we learnedD. what have we learned18. Did she say anything about _____?A. that the work was to be doneB. how was the work to be doneC. that was the work to be doneD. how the work was to be done19. He was never satisfied with _____.A. what she had achievedB. had what she achievedC. she had achievedD. that she achieved20. These photographs will show you _____.A. what does our village look likeB. what our village looks likeC. how does our village look likeD. how our village looks like21. Peter insisted _____ he pay the bill.A. on thatB. whatC. thatD. on which22. They urged _____ the library open during the vacation.A. whenB. whereC. whyD. that23. We wish we could have learned _____ when we were at high school.A. what you didB. that you had doneC. that what you didD. what did you do24.1 will describe to you _____ I saw when there.A. whatB. thatC. whichD./25. From _____ I should say he is a good worker.A. what 1 know of himB. that I do know of himC. what do I know of himD. that do I know of him26. I will give this dictionary to __ wants to have it.A. whomeverB. anyoneC. whoeverD. someone27._____ they will come here hasn' t been decided yet.A. WhatB. ThatC. WhenD. Where28. _____ was said here must be kept secret.A. WhoB. The thingC. WhateverD. Where29. It is still a question _____ we shall have our sports meet.A. ifB. thatC. whatD. when30. I'm going anyway. _____ she will go is up to her to decide.A. If or notB. Whether or notC. IfD. That31. It is strange _____ she have left without saying a word.A. thatB. whatC. whyD. how32. It is very clear _____ our policy is a correct one.A. whatB. thatC. whyD. where33. _____ Mr Zhang said is quite right.A. ThatB. WhenC. WhatD. Whether34. It has been decided _____ he will be sent there.A. ifB. whetherC. whyD. that35. It doesn' t matter _____he' s come back or not.A. ifB. whetherC. thatD. when36. It's a great pity _____ we won’t be able to finish the task on time.A. whenB. thatC. whyD. where37. It happened _____ I wasn't there that day.A. whenB. whyC. whereD. that38._____ you have done might do harm to other people.A. WhatB. ThatC. WhichD. The things39. _____ leaves the room last ought to turn oft the lights.A. AnyoneB. The personC. WhoeverD.Who40._____ the 2000 Olympic Games won't be held in Beijing is known to all.A. WhetherB. IfC. WheneverD. That41. _____ fails to see this will make a big mistake.A. ThatB. WhoeverC. WhetherD. Whether or not42. __ we need more equipment is quite obvious.A. WhatB. WhetherC. ThatD. Whatever43. Has it been announced _____?A. when are the planes to take offB. that are the planes to take offC. where are the planes to take offD. when the planes are to take off44. That is _____ we all support his idea.A. whatB. whyC. whereD. when45. That’s _____ we should do.A. thatB. whatC. howD. why46. _____ is troubling me is _____ I don’t understand _____ he saidA. What; that; whatB. What; what; whatC. That; that; whatD. Why; that; which47. Things were not _____ they seemed to be.A. whenB. whyC. thatD. what48. That’s _____ I want to say.A. all whatB. whatC. all whichD. what that49. That’s _____ .A. where our differences lieB. our differences lie thereC. where do our differences lieD. that where our differences lie50. That is _____ .A. where lived he thereB. where did he liveC. where he livedD. that where he lived51. The questions is _____.A. whether is it worth doingB. that if it is worth doingC. whether it is worth doingD. if it is worth doing52. Water will continue to be _____ it is today next in importance to oxygen.A. howB. whichC. whatD. as53. That's_____.A. how did I become a teacherB. how I became a teacherC. how a teacher I becameD. that I became a teacher54. They are just _____.A. that what shall I haveB. what shall I haveC. that I shall have whatD. what I shall have55. It looked ____.A. as if it was going to rainB. that as if it was going to rainC. as if was it going to rainD. as if that it was going to rain56. That's_____.A. how she did itB. that how did she do it.C. how did she do itD. what she did it57. That is _____ we decided to put the discussion off.A. whereB. whichC. thatD. why58. Th at’s _____ I lived when I was ten years old.A. whereB. at whichC. there whereD. when59. My suggestion is _____ we should send a few comrades to help them.A. ifB. thatC. when thatD. that where60. The idea _____ all people are selfish is wrong.A. whatB. thatC. whyD. if61. We heard the news _____ our team had won.A. thatB. whatC. whetherD. why62. The fact _____ he hadn’t said anything surprised us all.A. whyB. ifC. thatD. whether63.I have no idea _____ she will be back.A. thatB. whereC. that whenD. when64. We must keep in mind the fact _____ China is still a developing country.A. whetherB. thatC. whyD. when65. They have no idea at all _____.A. where he has goneB. where did he goC. where has he goneD. which place he has gone。
