高中英语名词性从句讲解与专项练习(含答案)

主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词因此，这四种从句通称为名词性从句。

引导名词性从句的连接词可分为三类：连接词that，whether, if （不充当从句的任何成分）连接代词：what, whatever, who, whoever, whom, whose, which,连接副词：when, where, how, why, wh- ever名词性从句连接词的选用一、that 和what的选用：that 和what都可引导所有的名词从句。

但是，what除起连接作用外，还在名词性从句中充当成分，可做从句的主语、宾语、或表语。

而that在名词性从句中不充当任何成分，只起连接作用。

二、if 和whether 的选用不能使用if 的情况：a. 主语从句句首b. 表语从句，同位语从句c. if引起歧义d. 介词后的宾语从句e. 与to do连用 f .whether or not 连在一起引导宾语从句时不用if三、其它连接代词和副词的连用主要根据名词性从句中的具体意义,正确的选择who、which、when、where、why、how 等连接词，这些连接词既具有疑问含义，又起连接作用，同时在从句中充当各种成分。

四、引导词that 的省略that 可省略的情况：单个宾语从句中的that可省略that不可省略的情况：a.主语从句b.表语从句c.同位语从句d.用it做形式宾语的宾语从句e.并列的宾语从句中，后几个从句的引导词that 不能省略五、同位语从句的引导和辨别1.同位语从句的格式：n.+ 连接词+ 从句2.能接同位语从句的名词有：fact、idea, news, information, order, belief, suggestion, advice等.3.连接词通常是that,也可根据含义选用whether, what, when, where 等来引导同位语从句.4.中心词是“意见、建议、命令”从句要用虚拟（should）do六、同位语从句和定语从句的区别1.定语从句是先行词的修饰语。

从句中that充当成分，做宾语时可省略。

2.同位语从句表明中心词的具体内容。

that 在同位语从句中不做任何成分,只起连接作用,无具体含义,且不可省略.判断从句类型七、宾语从句的时态呼应1. 如果主句时态是现在时或将来时,从句谓语可根据句意需要而选用任一种时态.2. 如果主句时态是过去式，从句要改成相应的过去式八、it做形式主语常用句型如下：（1）It + be + 名词+ that从句（2）It + be + 形容词+ that从句（3）It + be + 动词的过去分词+ that从句（4）It + 不及物动词+ that 从句班级：姓名：评分：一、用that或what填空1.______ he wants is a book.2. ______ he wants to go there is obvious.3.The result is ______ we won the game.4.This is _____ we want to know.5.Is _____ he told us true ?6.We should pay attention to ______ the teacher is saying.7. I have no doubt _____ he will come.8. I have no idea _____ he did that afternoon.9._____ has made China_____ it is now?10. we can’t get seems better than we have .11.A computer can only do you instructed it to do .12.He became so angry he couldn't speak .13.There is the city we visited last year .14.There is no doubt the price of cars will go down .15.None of us has a clear idea the others want to do .16.Do he or she tells you to do .17. he did surprised us .18. he did so surprised us .19.This is all I know.20.This is I know.二、用if 或whether填空1. I asked her __________ she had a bike.2.______ we will hold a party in the open air tomorrow depends on the weather.3. We’re worried about ________ he is safe.4. I don’t know ___________ he is well or not.5. I don’t know ________ or not he is well.6. The question is _______ he should do it.7.The doctor can hardly answer the question______ the old man will recover soon.8. I don’t kn ow _______ to go.9.______ you are not free tomorrow, I’ll go without you.10.It depends on she will come.11.I have no idea he will be back .12.We must stick to our promise or no .13. It is valuable ,I can't say .14.I don’t know he is lying or not.15. I didn’t know to go home or stay at home..三、用适当的连词填空：1.__ _ you don’t like him is none of my business.2.______ we’ll go camping depends on _____ it will be fine tomorrow.3._____ she comes or not makes no difference.4.The question is ____ it is worth doing.5.There is some doubt ____he will come./ There is no doubt ____he will come.6.____ is a fact that English is being accepted as an international language.7._____ has helped to save the drowning girl is worth praising.8.It is said that the famous football star is not willing to play for ______ would pay himthree million dollars a year.9.It was about 600 years ago ____ the first clock with a face and an hour hand wasmade.10.Go and get your coat. It’s ____ you left it.11.You are saying that everyone should be equal, and this is _____ I disagree.12.--- I drove to Zhuhai for the air show last week.--- Is that _____ you had a few days off?13.I remember ____ this used to be a quiet village.14.---Do you remember____ he came? --- Yes, I do, he came by car.15.It is generally considered unwise to give a child _____ he or she wants16._____we can’t get comes better than ____ we have.17.A computer can only do ____ you have instructed it to do.18.It is pretty well understood ____ controls the flow of carbon dioxide in and out theatmosphere today.19.A modern city has been set up in _____ was a wasteland ten years ago.20.Do you have any idea ___ is actually going on in the classroom?21.See the flags on the building? That was_____ we did this morning.22.America was ____ was first called “India” by Columbus.23._____ troubles me most is _____ I don’t know how to calm the sick old man.24.I think it is ____ you are working yourself too much.25.The reason ____ I plan to go is ____ she will be disappointed ____ I don’t.26.Danby left word with my secretary ____ he would call again in the afternoon.27.Do _____ you think is right, ________ they say.28.It’s known to us _______ there is pollution, there is harm.29.He made a promise ________ anyone set him free he would make him very rich.30.It was at the very beginning ___ Mr. Fox made the decision ___ we should send morefirefighters here.31.I would appreciate ___ if you call back this afternoon for the doctor’s appointment.32、It is very exciting _____ we win the game.33、What we feel excited is ______ we win the game.34、We are excited about news _____ we win the game.35、The news Mr. Li will be our new English teacher is true.36、The news he told me yesterday is true.37、The news he told me is that Mike would go abroad next year38、The news Mike would go abroad next year is told by him.39、She expressed the hope they would come to visit Shanghai again.40、The hope she expressed is that they would come to visit Shanghai again41. I can’t decide ____________ dictionary I should buy.42. That’s ____________ he refused my invitation.43. I am very interested in ____________ he has improved his pronunciation in such ashort time.44. ____________ we need is more time.45. The fact ____________ she had not said anything at the meeting surprised everybody.46. _________ and _________ they will meet has not been decided yet.47. Please tell me ____________ you are waiting for.48. Is that ____________ you are looking for?49. Would you please tell me ____________ the nearest post office is?50.News came from the school office _______Wang Lin had been admitted to Beijing University.四、语法填空：It is known to us 1 once Tom and Ann were 2 affectionate （恩爱的）couple. But to our surprise, 3 broke up two years ago. 4 made them part company（分手）was 5 Tom was 6 absorbed in his business 7 he overlooked（忽略）his wife sometimes. I felt it was a pity, 8 （hope ）that they would reconcile（和好）. So yesterday 9 I heard the news 10 they lived together again, I felt very happy.请把你的答案填在下列横线上：1、2、3、4、5、6、7、8、9、10 、参考答案一、用that或what填空1. What2.That3.that4.what5. what6.what7.that8.What 9.what, what 10. what , what 11.what 12.that 13 .that 14.that 15. what 16.what17.What 18. That 19. That 20.what二、用if 或whether填空1.if / whether2.Whether3. Whether4.Whether5.Whether6.Whether7.Whether8.Whether9.if 10.whether 11.whether12.whether 13.whether 14.whether 15.whether三、用适当的连词填空：1. That2. Whether, whether3. whether4. whether5. whether6. It7. Whoever8.whoever9. that 10. Where 11. where 12. why 13. when 14. how 15.whatever16.What, what 17. what 18. what 19.what 20. What 21. what 22. what 23. What, that 24. because 25. why, that, if 26.that 27. what, whatever 28.that where 29. that if 30.that, that 31. it 32-40全部填that 41. which; 42. why; 43. how;4 4. What; 45. that; 46. when, where; 47. who(m); 48. what; 49. where; 50. that四、语法填空：It is known to us that once Tom and Ann were an affectionate恩爱的couple. But to our surprise, they broke up two years ago. What made them part company was that Tom was so absorbed in his business that he overlooked his wife sometimes. I felt it was a pity, hoping that they would reconcile. So yesterday when I heard the news that they lived together again, I felt very happy.。