名词性从句讲解及专项练习习题及其解答
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名词性从句讲解
在复合句中起名词作用的从句叫做名词性从句。它包括主语从句、宾语从句、表语从句和同位语从句。名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。分析历届高考试题名词性从句考查的焦点主要有以下六个方面
1. 考查名词性从句的语序问题
2. 考查引导词that与what的区别
3. 考查it在名词性从句中作形式主语或形式宾语的用法
4. 考查whether与if的区别
5. 考查名词性从句中的疑问词+ever引导的名词性从句与no matter+疑问词引导的状语从句的区别
6. 考
查名词性从句的虚拟语气问题
语法要点剖析
一、名词性从句
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
1. 主语从句
作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如：What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。
It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.
英语晚会将在哪里举行，还没有宣布。
有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。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
。
另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：
It is necessary (important, natural, strange, etc.) that …
It is a pity (a shame, no wonder, etc.) that…
It is suggested (requested, proposed, desired, etc.) that…
2. 宾语从句
名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。
1. 由连接词that引导的宾语从句
由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如：
He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。
We must never think (that) we are good in everything while others are good in nothing.
我们决不能认为自己什么都好，别人什么都不好。
注意：在demand、order、suggest、decide、insist, desire, demand, request, command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should）+ 动词原形”。例如：
I insist that she (should) do her work alone. 我坚持要她自己工作。
The commander ordered that troops (should) set off at once. 司令员命令部队马上出发。
2. 用who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序。
例如：I want to know what he has told you. 我想知道他告诉了你什么。
She always thinks of how she can work well. 她总是在想怎样能把工作做好。
She will give whoever needs help a warm support. 凡需要帮助的人，她都会给予热情的支持。
3. 用whether或if引导的宾语从句，其主语和谓语的顺序也不能颠倒，仍保持陈述句语序。此外，whether与if 在作“是否”的意思讲时在下列情况下一般只能用whether，不用if：
a. 引导主语从句并在句首时；
b. 引导表语从句时；c . 引导从句作介词宾语时；d. 从句后有“or not”时；e. 后接动词不定式时。
例如：Whether there is life on the moon is an interesting question.
月球上有没有生命是个有趣的问题。
Everything depends on whether we have enough money. 一切要看我们是否有足够的钱。
4. 注意宾语从句中的时态呼应，当主句动词是现在时，从句根据自身的句子情况，而使用
不同时态。
{
例如：he studies English every day. （从句用一般现在时）
he studied English last term. （从句用一般过去时）
I know (that) he will study English next year. （从句用一般将来时）
he has studied English since 1998. （从句用现在完成时）
当主句动词是过去时态（could, would除外），从句则要用相应的过去时态，如一般过去时，过去进行时，过去将来时等；当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。
例如：The teacher told us that Tom had left us for America．
5. think, believe, imagine, suppose等等动词引起的否定性宾语从句中，要把上述主句中的动词变为否定式。即将从句中的否定形式移到主句中。
例如：We don’t think you are here. 我们认为你不在这。
I don’t believe he will do so. 我相信他不会这样做。
3. 表语从句
在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用as if引导。其基本结构为：主语 + 系动词 + that从句。例如：
The fact is that we have lost the game. 事实是我们已经输了这场比赛。
That is why he didn’t come to the meeting. 那就是他为什么不到会的原因。
It looks as if it is going to rain. 看上去天要下雨了。
需要注意的，当主语是reason时，表语从句要用that引导而不是because。例如：
The reason why he was late was that he missed the train by one minute this morning
4. 同位语从句
同位语从句说明其前面的名词的具体内容。同位语从句通常由that引导，可用于同位语从句的名词有advice、demand、doubt、fact、hope、idea、information、message、news、order、problem、promise、question、request、suggestion、truth、wish、word等。例如：
The news that we won the game is exciting. 我们赢得这场比赛的消息令人激动。
I have no idea when he will come back home. 我不知道他什么时候回来。
The thought came to him that Mary had probably fallen ill. 他想到可能玛丽生病了。
同位语从句和定语从句的区别：
that作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略； that引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分，一般不能省略。
试比较下面两个例句:
I had no idea that you were here．（that引导同位语从句，不能省略）
Have you got the idea（that）this book gives you of life in ancient Greece（that引导定语从句，作宾
语，可以省略）
#
名词性从句专项练习100题
1. His success was because of ________ he had been working hard.
A. that
B. the fact which
C. the fact that
D. the fact
2. “Is Mary from New York City” “I don't know _______.”
A. from what city does she come from
B. from what city she come
C. what city does she come from
D. what city she comes from
3. ________ makes mistakes must correct them.
—
A. What
B. That
C. Whoever
D. Whatever
4. The reason why I didn't go to Shanghai was ________ a new job.
A. because I got
B. because of getting
C. I got
D. that I got
5. It worried her a bit ____ her hair was turning grey.
A. while
B. that
C. if
D. for
6. Henry killed the dog. I'll ask him why ________.
A. did he do that
B. he did that
C. he did
D. he has done so
7. Have you seen Henry lately My boss wants to know ________.
》
A. how he is getting along
B. how is he getting along
C. what he is getting along
D. what is he getting along
8. It is generally considered unwise to give a child ____ he or she wants.
A. however
B. whatever
C. whichever
D. whenever
9. He asked me ________ with me.
A. what is the trouble
B. what wrong was
C. what was the matter
D. what trouble it is
10. I am sure ________ he said is true.
-
A. that
B. about that
C. of that
D. that what
11. When and why he came here ________ yet.
A. is not known
B. are not known
C. has not known
D. have not bee
12. I wonder how much ________.
A. does the watch cost
B. did the watch cost
C. the watch costed
D. the watch costs
13. Mary is ________ someone might recognize her.
A. afraid of
B. afraid about
C. afraid that
D. afraid for '
is no reason for dismissing her.
A. Because she was a few minutes late
B. Owing to a few minutes late
C. The fact that she was a few minutes late
D. Being a few minutes late
15. They came to the conclusion ________ by a computer.
A. that not all things can be done
B. because of not all things be done
C. being not all things can be done
D. because not all things can be done
16. Why the explosion occurred was ________ the laboratory attendant had been careless.
A. for
B. because
C. since
D. that
—
17. I don't doubt ________ he'll come.
A. that
B. if
C. what
D. whether
18. —“Why did you go to the wrong class, Mr. Wang”
—“Well, I forget _______ I was supposed to go to.”
A. which the room
B. which room
C. what was the room
D. what room was it
19. Output is now six times ________ it was before liberation.
A. that
B. which
C. what
D. of which
20. Mary: Helen is a mere washer woman, yet she's now buying a big house.
(
Carol: Yes. Because she's always saved ________.
A. what little she earns
B. how little she earns
C. for little she earns
D. with little she earns
21. ______ surprised me most was ______ such a little boy of seven could play the violin so well.
A. That…what
B. What…that
C. That…which
D. What…which
22. We gave him ________ help we could.
A. which
B. what
C. that
D. this
23. She is pleased with what you have given him and ________ you have told him.
:
A. that
B. which
C. all what
D. all that
24. Excuse me would you please tell me ________
A. when the sports meet is taken place
B. when is the sports meet going to be held
C. when is the sports meet to begin
D. when the sports meet is to take place
25. Do you happen to know ________
A. what size shoes he wears
B. how big shoes he wears
C. what is the size of his shoes
D. what number shoes are his
26. This book will show you ________ can be used in other contexts.
'
A. how you have observed
B. how what you have observed
C. that you have observed
D. how that you have observed
27. Where do you think ________
A. has he gone
B. has he been
C. he's gone
D. was he
28. Do you know ________
A. how many populations there are in the world
B. how much population there is in the world
C. how many the population of the world is
(
D. what the population of the world is
29. Would you go and see ________ outside
A. what to take place
B. what Tom has happened
C. what is happening
D. what the matter had been
30. The subject of "What is interesting is that I do not even know him." is_______.
A. what
B. interesting
C. What is interesting
D. I
31. ________ I think he is Charles.
A. Who do you think he is
B. Do you think who he is
…
C. Whom do you think he is
D. Do you think who he is
32. He didn't know which room ________.
A. they lived
B. they lived in
C. did they live
D. did they live in
33. The little boy ate ________ his mother gave him.
A. that
B. which
C. whatever
D. no matter what
34. The city is no longer ________.
A. what it is
B. that it used to be
C. which it was
D. what it used to be
35. My parents used ________ they had to get a new car for me.
-
A. which
B. that
C. what
D. all what
36. ________ we go swimming every day ________ us a lot of good.
A. If…do
B. That…do
C. If…does
D. That…does
37. ________ was the idea _______ the wife thought of
A. What…that
B. That…what
C. How…why
D. Why…how
38. _______ did he tell his wife ________ he wished to do
A. That…what
B. What…that
C. Where…which
D. Which…where
39. One of the men held the view ________ the book said was right.
?
A. what that
B. that what
C. that which
D. which that
40. I have no idea ________ or not he has finished the work.
A. if
B. that
C. whether
D. which
41. —“Do you know ________”
—“His father is a doctor.”
A. what is his father
B. who is his father
C. what his father is
D. who his father is
42. Is this ________ we met each other two years ago
…
A. place
B. place in which
C. where
D. place which
43. It ________ Bob drives badly.
A. thinks that
B. is thought what
C. thought that
D. is thought that
44. We all know the truth ________ there are air, water and sunlight there are living things.
A. where
B. wherever
C. that
D. that wherever
45. They discussed ________ they could settle the problem without others' help.
A. if
B. that
C. what
D. whether
46. She asked ________.
'
A. what I was doing when she rang me up
B. what was I doing when she rang me up
C. when she rang me up what I was doing
D. when did she ring me up what I was doing
47. —May I borrow the ring
—You can take _______ you like.
A. no matter what
B. which
C. whichever
D. that
48. He said that he was fond of ________.
A. what beautiful is
B. what is beautiful
C. beautiful is what
D. what it is beautiful
【
49. He insisted that he ________ in good health and _______ to work there.
A. was, be sent
B. is, is sent
C. be, was sent
D. be, send
50. Do you know ________ he expects will give us a talk
A. who
B. whom
C. that
D. whose
51. It's uncertain ________ the experiment is worth doing.
A. if
B. that
C. whether
D. how
52. They would have fixed the telephone yesterday _________ it was a holiday.
A. except
B. except for
C. except that
D. but for
、
53. ________ is to do good all one's life and never do anything bad.
A. Whichever is hard
B. No matter what is hard
C. What is hard
D. All what is hard
54. ________ the boy didn't take medicine made his mother angry.
A. That
B. What
C. How
D. Which
55. As the day was fine, I made the suggestion ________ for a walk in the park.
A. we go
B. we will go
C. should we go
D. that we go
56. ____ we can't get seems better than ____ we have.
￥
A. What, what
B. What, that
C. That, that
D. That, what
57. ____ you don't like him is none of my business.
A. What
B. Who
C. That
D. Whether
58. You can't imagine ____ when they received these nice Christmas presents.
A. how they were excited
B. how excited they were
C. how excited were they
D. they were how excited
59. ____ we'll go camping tomorrow depends on the weather.
A. If
B. Whether
C. That
D. Where
^
60. ________he really means is ________he disagrees with us.
A. What … that
B. That … what
C. Why … that
D. If … what
61. _________is going to do the job will be decided by the Party committee.
A. That
B. Why
C. How
D. Who
62. _______ we'll finish translating the book depends on the time.
A. When
B. Why
C. What
D. That
63. _______ the house will be built will be discussed at tomorrow's meeting.
A. If
B. Where
C. That
D. What
…
64. _______ he won't go there is clear to all of us.
A. How
B. What
C. Why
D. This
65. _______ you come or not is up to you.
A. What
B. If
C. Why
D. Whether
66. _______ makes mistakes must correct them.
A. Who
B. Anyone
C. Whoever
D. Anybody
67. _______ team will win the match is a matter of public concern.
A. Which
B. That
C. If
D. How
!
days later, word came ________our country had sent up another man-made satellite.
A. which
B. when
C. that
D. where
problem is ________will go to the meeting.
A. why
B. when
C. what
D. who
looks _______ it were going to rain.
A. even if
B. as if
C. even though
D. like
is _______ he likes the place so much.
A. that
B. what
C. why
D. how
…
is ______ Lu Xun once lived.
A. what
B. where
C. that
D. why
73. We thought _______ strange that Tom did not come yesterday.
A. that
B. it
C. this
D. what
fact _______ she had not said anything surprised all of us.
A. which
B. what
C. that
D. how
I'm considering now _________ the money we need.
A. is
B. are
C. were
D. was
~
you tell me __________
A. who is that gentleman
B. that gentleman is who
C. who that gentleman is
D. whom is that gentleman
77. ________leaves the room last ought to turn off the lights.
A. Anyone
B. The person
C. Whoever
D. Who
78. It is well known _________ a person eats causes changes in the body.
A. that what, when, and how
B. that
C. what
D. how
;
79. The energy is ________ makes the cells able to do their work.
A. that
B. which
C. what
D. such
80. Jack was soon told ________ he did was not necessary.
A. why
B. that
C. how
D. why what
81. We should think carefully about ________ Mr. Needham said at the meeting.
A. that
B. what
C. which
D. X
82. Can you point out ________ two radios are the best
A. which
B. what
C. that
D. whether
!
83. You will easily know ________ video recorders (录相机) are the same.
A. what those
B. that of those
C. that all of
D. which of those
84. ________ you have seen things like these before doesn't matter.
A. If
B. Whether
C. What
D. When
85. I asked her in English ________ she was, and she told me ________ she was an actress.
A. who…that
B. who…X
C. what…X
D. how…that
86. She took it for granted ________ I'd be back home an hour ago.
A. that
B. whether
C. if
D. when
^
87. We think it possible ________ the local government will be able to solve the housing problem.
A. for
B. that
C. when
D. how
88. Now there is a danger ________ the ground may fall in (沉下) under the heavy traffic.
A. whether
B. if
C. X
D. that
89. At that time I had no idea ________ I could hand it to him without being seen.
A. if
B. how
C. which
D. that how
90. Last Sunday he promised ________ today, but he hasn't appeared yet.
A. that he would come
B. that he will come
[
C. he will come to see me
D. whether he would come
91. Last Sunday he made a promise ________ he was free he would take me to Qingdao.
A. if
B. that
C. that if
D. whether
92. Do you have any idea ________
A. when Miss Smith will arrive
B. when will Miss Smith arrive
C. how will Miss Smith arrive
D. why hasn't Miss Smith arrived
93. I have almost forgotten ________.
A. how Mr. Taylor's like
B. what Mr. Taylor's face is like
{
C. what Mr. Taylor's face is
D. which Mr. Taylor's face is like
94. The true value of life is not in ________, but ________.
A. how you get …that you give
B. which you got what you give
C. what you get …what you give
D. what do you get…what do you give
95. Do you know ________
A. what is this used for
B. what this is used for
C. which this is used
D. that this is used for
96. ________ surprised me most was ________.
(
A. That…that she spoke Japanese so well
B. What…how could she speak Japanese so well
C. What…that she spo ke Japanese so well
D. That…why she could speak Japanese so well
97. ________ is to dance.
A. That interests Mary really
B. Which really interests Mary.
C. What really interests Mary
D. What really interest Mary
98. We were greatly amused by ________.
A. what you have told us
B. which you had told us
C. what you told us
D. that you told us
…
99. These computers are different from ________.
A. that we expected
B. what we expected
C. which we have expected
D. what we expect
100. ________ Tom liked to eat was different from ________.
A. That…that you had expected
B. What …that you had expected
C. That…what you had expected
D. What…what you had expected
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
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61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 》
76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
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61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA
76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
61-65 DABCD 66-70 CACDB 71-75 CBBCA 76-80 CCCCD 81-85 BADBC 86-90 ABDBA 91-95 CABCB 96-100 CCCBD
选校网高考频道专业大全历年分数线上万张大学图片大学视频院校库 (按ctrl 点击打开)
名词性从句超详细讲解]
名词性从句超详细讲解] 【文字｜双语| 教程】▼引导名词性从句的连接词可分为三类：连词（5个）：that （本身无意义。引导单一的宾语从句时that常可省略，但引导主语从句、表语从句、同位语从句时that通常不被省略）whether,if （均表示“是否”表明从句内容的不确定性）as if ,as though （[1] 均表示“好像”，“似乎”）以上在从句中均不充当任何成分连接代词（10个）：what/ whatever, who/ whoever, whom/ whomever, whose/whosever, which/ whichever连接副词（7个）：when/ whenever, where/ wherever, how/ however, why不可省略的连词：1. 介词后的连词。2. 引导主语从句和同位语从句的连词不可省略。That she was chosen made us very happy.We heard the news that our team had won.3. 在从句中做成分的连词.比较whether与if 均为"是否"的意思。但在下列情况下，只可用whether：1. whether引导主语从句并在句首。 eg:Whether he can come to the party on time depends on the traffic.2. 引导表语从句。eg:The question is whether we can get in touch with her.3.whether从句作介词宾语。eg:I am thinking about whether I should quit my present job.4.if与whether都可以与or not 连用，但后面紧跟or not 时只能用whether。We didn't know whether or not she was ready.（此时只能用
专项训练名词性从句专项及解析含答案解析
专项训练名词性从句专项及解析含答案解析 一、初中英语名词性从句 1．______ is our belief that improvements in health care will lead to a stronger, more prosperous economy. A. Which B. What C. It D. As 【答案】 C 【解析】【分析】句意：医疗保健的进步将促进一个更强大、更繁荣的经济，这是我们的信念。that引导的是主语从句，故空格处应该用it作形式主语，代替真正的that引导的主语从句。故答案选C。 【点评】考查it的用法，以及主语从句的应用。 2．_____ is known to us all is that China has launched Shenzhou VII spaceship, ____ made the country's first spacewalk successful. A. That; what B. What; which C. It; which D. As; that 【答案】 B 【解析】【分析】句意：众所周知，中国已经发射了神州7号宇宙飞船，这是中国首次成功的太空行走。第一空处为主语从句，从句缺少主语，需用what引导；第二空所在句子是个定语从句，先行词为整个主句的内容，从句中缺少主语，需用which引导。故选B。【点评】考查名词性从句和定语从句，本题涉及主语从句和非限制性定语从句的应用。 3．He took a trip to Beijing last week and ________ he saw at the Forbidden City impressed him deeply. A. that B. how C. what D. which 【答案】 C 【解析】【分析】句意：上周他到北京旅行了，他在故宫所看到的给他留下了深刻的印象。分析句子结构可知，连词and后为一个名词性从句，因此应该使用what引导，且what在从句中作主语，故选C。 【点评】考查名词性从句，本题涉及what引导的主语从句。 4．________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages. A. It's the sun and not the earth B. The sun and not the earth C. Being the sun and not the earth D. That the sun and not the earth 【答案】 D 【解析】【分析】句意：太阳而不是地球是我们行星系统的中心，这在中世纪是一个很难理解的概念。分析句子可知，整个句子为主系表结构，was为系动词，它之前的都为主语，且主语由句子来充当，句子结构以及句意完整，所以连词代词为that。故选D。
名词性从句讲解与辨析
英语语法：名词性从句语法讲解 时间：2016-10-08作者：来源：精品学习网 笔者在此就名词性从句中的几大易错点进行分析，希望对同学们有所帮助。 [关系代词和关系副词的误用] 例1 （2016·全国卷Ⅰ） My uncle is the owner of a restaurant close to that I live. 解析 that→where。本题考查宾语从句，引导词在从句中充当地点状语，所以将that改为where。 例2 （2015·全国卷Ⅱ） As natural architects， the Pueblo Indians figured out exactly thick the adobe walls needed to be to make the cycle work on most days. 解析 how。根据语境和空后的形容词thick可知应用how引导宾语从句，此处表示要弄清楚到底土坯房的墙需要“多”厚。故答案为how。 点拨若从句缺少主语、宾语、表语或定语，则考虑用关系代词；若从句缺少时间、地点、原因、方式等状语成分，则使用关系副词 （when/where/why/how）。 [if和whether的误用] 例3 He asked her the question if they can be friends. 解析 if→whether。question后为同位语从句，只能用whether来引导，故而将if改为whether。 例4 It doesn’t matter so much you will come or not. 解析考查主语从句。句意：你来还是不来，这不怎么重要。代词it作形式主语，真正的主语是whether引导的主语从句。 点拨在表达“是否”这一意思时，我们经常会用到whether和if，但以下几种情况只用whether不用if： 1. 在表语从句、主语从句、同位语从句中； 2. 在介词后的宾语从句中。如：It all depends on whether they will
名词性从句用法详解
高一语法专题：名词性从句 在句子中起名词作用的从句叫名词性从句。名词性从句的功能相当于名词词组，它在 复合句中能担任主语、宾语、表语、同位语，因此根据它在句中不同的语法功能，名词性 从句又可分为主语从句、宾语从句、表语从句、同位语从句。 引导名词性从句的词叫做连接词，包括：1. 连词（在名词性从句中只起连接作用，不 作成分） 2. 连接代词（在名词性从句中作主语、宾语 或表语） 3. 连接副词（在名词性从句中作状语） I 主语从句：是在主句中作主语的从句。它由连接词引导，通常位于谓语动词之前。 连接词：
1. 连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether。 That he got the first prize excited him much. 他获得一等奖一事使他非常兴奋。 It is doubtful whether we can get there on time. 我们能否按时到达那儿还不确定。 1）that引导的主语从句：在从句中不作任何成分，也没有实际意义。一般情况 下that不可省略。 That light travels in straight lines is known to all. 众所周知，光沿直线传播。 That you don't like him is none of my business. 你不喜欢他不关我的事。 2）whether引导的主语从句：常置于句首，表示“是否”之意；
Whether he can finish his task on time is of great importance. 他是否能按时完成任务非常重要。 Whether you can succeed or not depends on how hard you work at it. 你能否成功取决于你努力的程度。 2.连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语，有具 体意义且不能省略。常见的连接代词有who, whom, whose, what, which, whoever, whomever, whatever, whichever。 What we should do with the problem is undecided. 我们如何处理这个问题还未作出决定。（what引导主语从句，不表疑问意义） Whom the letter was from is still unknown.
(完整版)名词性从句讲解及专项练习习题及其解答
名词性从句讲解 在复合句中起名词作用的从句叫做名词性从句。它包括主语从句、宾语从句、表语从句和同位语从句。名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。分析历届高考试题名词性从句考查的焦点主要有以下六个方面 1. 考查名词性从句的语序问题 2. 考查引导词that与what的区别 3. 考查it在名词性从句中作形式主语或形式宾语的用法 4. 考查whether与if的区别 5. 考查名词性从句中的疑问词+ever引导的名词性从句与no matter+疑问词引导的状语从句的区别 6. 考查名词性从句的虚拟语气问题 语法要点剖析 一、名词性从句 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 1. 主语从句 作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如： What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。 It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。 Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。 有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。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 另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有： It is necessary (important, natural, strange, etc.) that … It is a pity (a shame, no wonder, etc.) that… It is suggested (requested, proposed, desired, etc.) that… 2. 宾语从句 名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。 1. 由连接词that引导的宾语从句 由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如： He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。 We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。 注意：在demand、order、suggest、decide、insist, desire, demand, request, command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should）+ 动词原形”。例如： I insist that she (should) do her work alone. 我坚持要她自己工作。 The commander ordered that troops (should) set off at once. 司令员命令部队马上出发。 2. 用who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序。 例如：I want to know what he has told you. 我想知道他告诉了你什么。 She always thinks of how she can work well. 她总是在想怎样能把工作做好。
英语名词性从句专项训练及答案及解析
英语名词性从句专项训练及答案及解析 一、初中英语名词性从句 1．______ has caused great confusion is ______ he made it without anyone else's help. A. What; that. B. What; how. C. It; how. D. It; that. 【答案】 B 【解析】【分析】句意：让人极大困惑的是他如何在没有别人帮助的情况下做到这一点的。表示“让人困惑的事情”用what引导主语从句，表示“如何做到的”用how表方式，引导表语从句。故选B. 【点评】考查名词性从句，本题涉及what引导的主语从句和how引导的表语从句。 2．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others. A. it; that B. what; that C. that; what D. which; that 【答案】 C 【解析】【分析】句意：虽然有些行为对你来说可能很奇怪，但请记住，你认为正常的行为对别人来说可能也不寻常。第一空为宾语从句，从句结构完整用that起连接作用，第二空为主语从句，从句中consider缺少宾语，应该用what，故选C。 【点评】考查名词性从句，本题涉及that引导的宾语从句和what引导的主语从句。 3． is clear to the members of the committee is that the President will not give in to their demands. A. Who B. It C. As D. What 【答案】 D 【解析】【分析】句意：委员会成员清楚的是，总统不会向他们的要求让步。that the President will not give in to their demands.这个句子作表语； is clear to the members of the committee这是主语从句，这里缺少主语从句的连接词，并且连接词在句中作主语，it是代词，不是了；连接词，故排除B；as作主语时，是在定语从句中，故排除C；who指人，根据表语指的事情，不是人，故排除A；what在主语从句中可以作主语或宾语，指事，符合句意，故选D。 【点评】考查名词性从句，本题涉及what引导的主语从句。 4．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties. A. As; whose B. It; whose C. As; whom D. It; whom 【答案】 D 【解析】【分析】句意：我们都知道，那位老科学家，过去生活很艰苦，到了八十多岁还在努力工作。第一空it is known to us all that…是个固定句型，意为“众所周知…”；第二空为介词+关系代词引导的定语从句，先行词the old scientist指人，作介词for的宾语，只能用whom，故选D。
名词性从句讲解与练习答案解析版
名词性从句
在句子中起名词作用的从句叫名词性从句。名词性从句的功能相当于名词词组，它在复合句中能担任主语、宾语、表语、同位语，因此根据它在句中不同的语法功能，名词性从句又可分为主语从句、宾语从句、表语从句、同位语从句。 引导名词性从句的词叫做连接词，包括： 1. 连词（在名词性从句中只起连接作用，不作成分） 2. 连接代词（在名词性从句中作主语、宾语或表语） 3. 连接副词（在名词性从句中作状语） 所有的名词性从句的语序都是陈述句语序。 主语从句：是在主句中作主语的从句。它由连接词引导，通常位于谓语动词之前。连接词： 1. 连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether。That he got the first prize excited him much. 他获得一等奖一事使他非常兴奋。 It is doubtful whether we can get there on time. 我们能否按时到达那儿还不确定。 1）that引导的主语从句：在从句中不作任何成分，也没有实际意义。一般情况 下that不可省略。 That light travels in straight lines is known to all. 众所周知，光沿直线传播。 That you don't like him is none of my business. 你不喜欢他不关我的事。 2）whether引导的主语从句：常置于句首，表示“是否”之意； if一般不引导主语从句。 Whether he can finish his task on time is of great importance. 他是否能按时完成任务非常重要。 Whether you can succeed or not depends on how hard you work at it. 你能否成功取决于你努力的程度。 连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语，有具体意义且不能省略。常见的连接代词有who, whom, whose, what, which, whoever, whomever, whatever, whichever。 What we should do with the problem is undecided. 我们如何处理这个问题还未作出决定。（what引导主语从句，不表疑问意义）Whom the letter was from is still unknown. 这封信是谁邮寄的还不清楚。 连接副词：在从句中起副词的作用，常作从句的状语，表示时间、地点、原因、方式等。常见的连接副词有when, where, how, why, whenever, wherever, however等。Why he did that wasn't quite clear. 他为什么做那件事还不十分清楚。 Where we can look up his address is still a problem. 我们在哪儿可以查他的地址还是个难题。 注意：it代替主语从句作形式主语
高中英语名词性从句专题讲解和巩固练习(含答案)
高中英语名词性从句专题讲解及巩固练习 定义：起名词性作用的从句，叫名词性从句。本来该由名词充当的主语、宾语、表语和同位语部分，换由一个句子来充当，这样的句子就是名词性从句。 【归纳】 1.只能用whether,不能用if a.主语从句 b. 表语从句 c. 同位语从句 e. 介词后的宾语从句 f. whether to do 做动词宾语不能用if to do. g.whether or not 连在一起引导宾语从句时不用if. 2.that和what的区别
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。 that在名词性从句中不充当任何成分，只起连接作用。 例：I have no doubt that he will come. I have no idea what he did that afternoon. 一．主语从句：在复合句中作主句的主语。 ●__________ he is a famous singer is known to us. ●__________ he will go to America is not yet fixed. ●__________ she’s coming or not doesn’t matter too much. ●__________ broke the glass yesterday is not clear. 【keys】That; When/How; Whether; Who 【归纳】 1.为避免主语冗长,句子头重脚轻, 经常用it作形式主语, 主语从句放在后面作真正的主语。 例：That her hair was turning gray worried her a lot. -----It worried her a lot that her hair was turning gray. 常考句型： It’s likely / possible / important / necessary / clear that…
名词性从句专项练习100题 附答案
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It is a pity that you didn't go to see the film. It doesn't interest me whether you succeed or not. It is in the morning that the murder took place. It is John that broke the window. 2. 用it 作形式主语的结构 (1) It is ＋名词＋从句 It is a fact that … 事实是… It is an honor that …非常荣幸 It is common knowledge that …是常识 (2) it is ＋形容词＋从句 It is natural that… 很自然… It is strange that… 奇怪的是… (3) it is ＋不及物动词＋从句
It seems that… 似乎… It happened that… 碰巧… (4) it ＋过去分词＋从句 It is reported that… 据报道… It has been proved that… 已证实… 3. 主语从句不可位于句首的五种情况 (1) if 引导的主语从句不可居于复合句句首。 (2) It is said , (reported) …结构中的主语从句不可提前。例如： It is said that President Jingo will visit our school next week. (right) That President Jiang will visit our school next week is said. (wrong)
名词性从句精讲(讲解+练习)
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【英语】英语名词性从句专项含解析
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