高中英语名词性从句讲解与练习

名词性从句
一、名词性从句的种类
名词性从句一共有三种: that从句 、whether(if)从句、疑问词所引导的从句；名词性从句具有
名词的功能，可充当句子主语、 宾语、表语、同位语，用名词性从句充当这几种成分，称为
主语从句、宾语从句、表语从句、同位语从句 。
二、that从句
任何一个陈述句前面冠子that，即为that从句:
He doesn't believe my words.(句子)→ that he doesn't believe my words.(名词性从句)
He enjoys dancing.(句子)→ that he enjoys dancing(名词性从句)
There is a lot of work to do.(句子)→ that there is a lot of work to do.(名词性从句)
三、whether从句
本从句系由一般疑问句演变而来。
1.问句有be动词时，主语与be动词还原，前面冠以 whether(if):
Is he happy?(句子)→ whether he is happy(名词性从句)(他是否快乐)
2.问句有一般助动词(can、 will、may、 should、 ought to、must、have)时
主语与助动词还原，前面冠以 whether
Can he do it?(句子)→ whether he can do it(名词性从句)(他是否能做这件事)
Has he done it→ whether he has done it(他是否已做好此事)
3.问句有do、does、did等助动词时主语与 助动词还原，再将do、does、did去掉，后面的
动词依人称和时态变化
Did he come?(问句)→ whether he did come→ whether he came(名词性从句)(他是否来了)
Does he like it?→ →
四、疑问词从句
本从句系由疑问词( when what、how、 where、why)等引导的特殊疑问句变化而成，这种由
疑问词引导的问句称为特殊疑问句。
1.问句有be动词时，前面保留疑问词，变为陈述语序
What is he doing?(问句)→ what he is doing(名词性从句)
2.问句有一般助动词时，前面保留疑问词，变为陈述语序
Where can he find it?(问句)→ where he can find it(名词性从句)

< br>3.问句有do、does、did等助动词时，主语与助动词还原，前面保留疑问词，再将do、doe s、
did去掉，动词依人称和时态变化。
What did he write?(问句)→what he did write→ what he wrote(名词性从句)
When did he come?(问句)→when he did come→
How does he do it?(问句)→how he does do it→
*注意:who what、 which(哪一个)为疑问代词,若在问句中作主语,变成名词性从句时,结构不
变
Who came here?(问句)→ who came here(名词性从句)
What happened last night?→ what happened last night
Which was bought?→ which was bought
五、名词性从句的功能
名词性从句乃由句子或问句变化而成，名可性从句也要被视为名词。由 于具有名词的特性，
故可作主语、宾语或在be动词之后作表语、同位语，用名词性从句充当这几种成分 ，称为
主语从句、宾语从句、表语从句、同位语从句。
1.名词性从句作主语
That honesty is the best policy is a proverb(which) we should always keep in mind.
Where he lives is still in doubt.
Whether he can do it remains to be seen.(他能胜任与否仍有待观察。)
名词性从句作主语时容易造成主语太长的现象，因此亦可用形式主语代替，置于句首，而被
代替的名词 性从句则置于句尾。故可改写为:
It is a proverb(which) we should always keep in mind that honesty is the best policy.
2.名词性从句作及物动词的宾语
I know that he will go abroad in the near future.
I wonder whether he has finished the work.
I don't know how he'll handle it.
3.名词性从句作介词的宾语 : 此时仅能用 whether从句或疑问词引导的名词性从句作宾
语。that从句不可作介词的宾语。

I am worried about whether he can do it.
I'm curious about how he'll cope with the problem.

I am sure of that the team has won the game. ( X)

4.遇有介词，且非要使用that从句时，其补救方法如下:
(1)介词+ the fact+that从如此，就可用 the fact作介词的宾语，而that从句就成了 the fact
的同位语
I am sure of the fact that the team has won the game.
I am worried about the fact that he doesn't study.

(2)保留介词，不加 the fact，但介词之后的that从句要做下列变化:
第一步:除去that
第二步:that后的主语变成所有格;
第三步:动词变成动名词
I am worried about that he plays around all day.
→his playing
→I am worried about his playing around all day.
(a)that从句若有助动词do、 does， did时，予以去掉即可。
I am worried about that he doesn't stydy.
→his not studying
→I am worried about his not studying.
(b)that从句若有助动词will或 would时,予以去掉即可
I am sure of that the team will win the game.
→the team's winning
→I am sure of the team's winning the game.
(3)be+adj.+that从句
也就是去掉介词，将that从句放在形容词后面，作其宾语。
I am worried abut that he plays around all day.
→I am worried that he plays around all day.

I am sure of that the team has won the game.
→I am sure that the team has won the game.

请将括号里的疑问句变成名词从句。

1．________is unimportant to me. (Does she come?)

2．________remains uncertain. (Shall we have the match?)

3．I wonder_______. (Should we wait for him?)

4．No one knows exactly_______. (Is there life on other planets?)

5．I am interested in the question_______. (Will people live on the moon someday?)

6．My question is_______. (Do we have enough time to go to the movie?)

7．Do you know______? (Does sound travel faster than light?)

8．I don't know_______. (How old is he?)

9．_______was interesting. (What was he talking about?)

10．Do you know_______? (What's on TV tonight?)

11．Please tell me________. (Where do you live?)

12．I wonder_______. (Why did dinosaurs become extinct?)

13．_______wasn't true. (What did she say?)

14．_______is true. (What did he tell you?)

15．_______is still a mystery. (Why did they refuse to cooperate with us?)

16．Do you know______? (When are they coming?)

17．I can't remember_______. (How much does it cost?)

18．Let's ask him_______. (Which book does he want?)

19．I don't know_______. (Who is coming to the party?)

20．I don't know_______. (Who are those people?)

21．Do you know_______? (Whose pen is this?)

22．_______is a secret. (Why did they leave the country?)

23．_______is none of your business. (Where did she go?)

24．_______will be forever etched in our memories. (What happened on the morning of
September 11? )

25．I don't remember_______. (How many letters are there in the English alphabet?)

26．I need to find out_______. (How old does a person have to be to get a driver's license?)

27．The little boy wants to know_______. (Do animals have the same emotions as human
beings?)

28．The little boy wants to know_______. (Why is the water of the sea salty?)