高中名词性从句讲解与练习.docx

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，名词性从句厅分为主语从句、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 whethere.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whetheroe.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 whethere.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news, fact, idea, suggestion,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：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./2.Tell me is on your mind.A.thatB.what3.We must stick to _____ we haveA.whatB.that4. Let me see .A. that can I repair the radioC. I can repair the radio5. Keep in mind .A. that the teacher saidC. that did the teacher sayC. how D. whatC. which D. whyagreed on.C. / D. howB. whether -I can repair the radioD. whether can I repair the radioB. what did the teacher sayD. what the teacher said6. Could you advise me ?A. which book should I read first B. what book should I read firstC. that book 1 should read first D. which book I should read first7. He was criticized for .A. he had done it B. what he had done C. what had he done D. 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 China B. that she had seen in ChinaC. what she had seen in China D. which had she seen in China10. We took it for granted ___A. that they were not coming B. that were they not comingC. they were coming not D. were they not coining11. I really don't know A. I should do next B. 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 standC. I stood there14. Can you tell me ?A. who is that gentlemanC. who that gentleman is 15. We'll give you .A. that do you needC. 。