名词性从句知识点复习
名词性从句相关知识点复习
一、主语从句：英语中用作主语的从句就叫主语从句。
（一）主语从句的引导词：
连词：that、whether、if
连接代词：who、whom、whose、what、which
连接副词：when、where、why、how
复合词：whoever、whomever、whatever、whichever
1.whether、if引导主语从句的区别：
（1）主语从句置于句首时只用whether.
Whether he will come here is not decided yet.
（2）当用it作形式主语，主语从句置于句中时，whether/if都可以。
It is unknown whether/if she will come today.
2.what 引导的主语从句一般放在句首，谓语动词的单复数取决于主句中作表语的名词。What we need is more time.
What they need are more English books.
3.连接副词when、where、why、how引导主语从句，既可以出现在句首，也可以用it作形式主语。
Why Tom was late is still unknown.
It is quite clear why he did it.
4.连词that的用法：
（1）that在句中无词义，只起连接作用，放在句首时，不能省略。
That he will come to the meeting is certain.
（2）为避免句子头重脚轻，常用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，常用句式：
1.It be+n+that从句
It is a pity that he can't come to my birthday party.
2.It be + adj + that从句
It is quite clear that the whole project will fail.
3. It be + 及物动词过去分词+that从句
It is ordered that we (should) get everything ready this evening.
4. It + 不及物动词+ that从句
It happened that I didn't take any money with me.
5.单个的主语从句表示单一概念时，谓语要用单数形式。
What he wants to tell us is not clear.
6.主语为两个并列的主语从句时，谓语用复数形式。
When they will start and where they will go have not been decided yet.
7.两个并列连词连接一个主语从句时，谓语用单数形式。
When and where the meeting will begin has not been decided.
二、同位语从句：英语中用作同位语的从句就叫同位语从句，位于一名词之后，用以解释说明该名词的具体内容。
（一、）常见的同位语从句一般由that引导：
可由that引导同位语从句的名词有：advice, decision, fact, hope, idea, information, news, promise, proposal, report, suggestion, word, problem, question, doubt, thought等。
（二、）引导同位语从句的that在从句中不充当句子成分，无词意，但不可省略。（三、）虚拟语气在同位语从句中的运用
若被同位语从句前的名词是表示要求，命令，建议等意义的词汇时，同位语从句的谓语动词要用“（should）+V”。
（四、）学习同位语从句需要注意的问题：
1.表达“是否”概念时，要用whether而不能用if.
I have no idea whether you are interested in working for her.
2.名词doubt后的同位语从句用whether引导，no doubt后的同位语从句用that引导。We have some doubt whether they can complete the task in time.
There is no doubt that he will keep his promise.
（五、）同位语从句与定语从句的区别
1.引导同位语从句的that是连词，只起连接作用，在从句中不作句子成分，而引导定语从句的that是关系代词，除起连接作用外，还要在从句中充当句子成分。
2.同位语从句中连词that一般不省略，而限定性定语从句中that在从句中作宾语时，可以省略。
三、宾语从句：英语中用作宾语的从句就叫宾语从句。
（一）、宾语从句的引导词：
连词：that、whether、if
连接代词：who、whom、whose、which、what
连接副词：when、where、why、how
复合词：whenever、wherever、whoever……
（二）、引导词的运用：
1. that引导宾语从句时，无语法功能和词汇意义，可省略。（注意：若从句是并列句时，第一个that可以省略，但第二个及后面分句中的that引导词不可省略）
She said (that) she would come here and that I should wait for her till Monday.
2.表“是否”时只用whether不用if的三种情况：
（1）与or not连用时
We don’t know whether Tom will attend the meeting or not.
（2）介词之后
Everything depends on whether you like it.
（3）后接不定式时
I can’t decide whether to stay.
（三）连接代词的作用：
引导宾语从句时，在从句中起代词的作用，可以作从句的主语，宾语，表语，定语
（四）宾语从句中需注意的三个问题：
1.否定前移：即当主句主语是I/we，时态为一般现在时，动词think、consider、believe、suppose、imagine、expect、guess等后面的宾语从句中的否定词经常前移至主句。
I don’t believe he has finished his work, has he?
2. It作形式宾语：
带有复合宾语的句子，that引导的宾语从句常被移到句子后而用It作形式宾语。
We think it impossible that you can finish the job today.
3.“doubt+宾语从句”句型中连词的选用
肯定句中用whether/if，否定句和疑问句中用that.
四、表语从句
（一）、可接表语从句的系动词有：
be、look、remain、stay、seem、feel、smell等
（二）表语从句的引导词：
连词：that、whether、because、as if（if不可以引导表语从句）
（三）表语从句引导词的运用：
that引导表语从句时，无词义，也不充当句子成分，但不可省略。
The fact is that we are behind other groups.
（四）表语从句中引导词必须用that的情况：
1.主语是the result时：
The result is that many of them become fat finally.
2.主语是the reason时:
The reason was that he was too busy.
3.由why引导的从句作主语时：
Why they put off the match is that the weather was too bad.
4. 在句型“the truth/fact is that……”
The truth is that I didn’t know about it at all.
5.连词because引导表语从句通常只用于“this/that/it is/was because……”结构中。且句子主语不能是reason或cause等表示原因的词。
6.as if/ though 引导表语从句时常置于系动词look、seem、sound、be、become等后面。The elephant feels as if he were a wall.
7.why也可引导表语从句，常用于句型：“This/That is why......”。
8.当主句的主语是reason时，表语从句用that引导，不能用why或because，这种用法常见于句型：“The reason why...is that...”如：
The reason why he came late was that he got up late.
易混补充：that与what引导名词性从句的区别
1.What引导名词性从句在从句中作主语、宾语、表语；而that引导名词性从句时不作任何成分且无任何词义。
2.what, who 等与whatever, whoever的区别
前者指具体的物或人，后者指任何一个人或物。对比：
I don’t know who can share my joys and sorrows.
I will make friends with whoever can share my joys and sorrows.
附练习几个：
1.Before a problem can be solved, it must be obvious_______the problem itself is.
2.There is clear evidence ________the most difficult feeling of all to interpret is bodily pain.
3.To prove the quality of our products, we asked fof suggestions_________had used the products.
4.________struck me most in the movie was the father’s deep love for his son.
5.Our teachers always tells us to believe in _________we do and who we are if we want to succeed.
6.When the news came_________the war broke out, he decided to serve in the army.
7.It’s by no means clear ________the president can do to end the strike.
8.It surprised us all __________so many passengers were killed in the accident.
9._______is widely acknowledged that_________there is life, there is hope.
10.The headteacher said _______________broke the rules would be punished.
11.Police have found __________appears to be the lost ancient statue.
12._______ you have done might do harm to other people.
13. I have no idea at all ______ they talked about in the next door room.
14. _______ leaves the room last ought to turn off the lights.
15. Anyone _____ leaves the room last ought to turn off the lights.
16. These photographs will show you ______ our village looks like.
17. Can you make sure _______ Alice has put the gold ring?
18. No one can be sure _______ man will look like in a million years.
19. It worried Tracy a bit _______ her hair was turning grey.
20. _______ you don’t like the singer is none of my business.
21. ________ Bob said at the meeting astonished everybody present.
22. My friends asked ______ I paid for the violin.
23. As his best friend, I can make accurate guesses about ______ he will do or think.
24. _______ is a fact that English is accepted as an international language.
25. Sarah hopes to become a friend of _______ shares her interests.
26. _______ we can’t get seems better than ________ we have.
27. _______ we’ll go camping tomorrow depends on the weather.
28. It is generally considered unwise to give a child ________ he or she wants.
29. ________ caused the accident is still a complete mystery.
30. It was a matter of ________ would take the position.
31. It has been proved ________ eating vegetables helps to protect you against serious illnesses.
32. _______ has helped to save the drowning girl is worth praising.
33. These wild flowers are so special _______ I would do _______ I can to save them.
34. The reason ______ I have to go is ______ my mother is ill in bed.
35. What the doctors really doubt is ____ my mother will recover from the serious disease soon.
36. _______ is no possibility _______ Bob can win the first prize in the speaking competition.
37. _______ matters most in learning English is enough practice.
38. ______ we are sure about is the need to prevent children from being spoiled.
39. ______ is known to us all is that the 2008 Olympic Games took place in Beijing.
40. We’re trying to figure out _______ quite a number of birds are dying out.
41. Tomorrow is Tom’s birthday. Have you got any i dea _______ the party is to be held?
42. A modern city has been set up in ______ was a wasteland ten years ago.
43. Parents are taught to understand ______ important education is to their children’s future.
44. The road is covered with snow. I can't understand ______ they insist on going by motor-bike.
45. It hasn’t been decided _______ Betty will come. It all depends.
46. The question is _______ the film is worth seeing.
【英语】名词性从句知识点总结和题型总结
【英语】名词性从句知识点总结和题型总结 一、名词性从句 1．______ will be in charge of the meeting has not been decided yet. A. What B. Which C. That D. Who 【答案】 D 【解析】【分析】句意：谁将负责这次会议还没有决定。______ will be in charge of the meeting是一个主语从句，从句中缺少主语，指人，故选D。 【点评】考查名词性从句，本题涉及who引导的主语从句。 2．___ surprised me most was ____the girl passed the driver test. A. That; that B. What; how C. What; that D. That; why 【答案】 C 【解析】【分析】句意：最让我吃惊的是那个女孩通过了驾驶考试。___ surprised me most是一个主语从句，从句中缺少主语，故填what；____the girl passed the driver test 是一个表语从句，句中不缺少成分，故填that。因此选C。 【点评】考查名词性从句，本题涉及what引导的主语从句和that引导的表语从句。 3．________ 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。 【点评】考查名词性从句和定语从句，本题涉及固定句式it is known to us all that…和whom引导的限制性定语从句。 4． is even more important is the earth cooled down, water began to appear on its surface. A. When; that; when B. What; whether; as C. What; that; as D. lt; whether; as 【答案】 C 【解析】【分析】这题考查从句的用法，第一空填what引导主语从句，在主语从句中what做主语，第二空填that引导表语从句，在表语从句中，as是引导时间状语从句，句意是：甚至更重要的是：随着地球的冷却，水开始出现在表面。选C。 5．Has it been announced ______?
名词性从句专题练习汇总
名词性从句专题练习 在空格处填上适当的关连词： 1.The question is ___________ the film is worth seeing. 2.Do you doubt ________ I believe you ? 3.This museum is not _______ it was ten years ago. 4.The reason for his success is ________ he work hard. 5.She dresses well, but the trouble is ______ the clothes she is wearing don’t go with each other very well. 6.The suggestion ______ students should learn some practical knowledge is worth considering. 7.It depends on _______ we have enough time. 8.You have no idea _________ anxious I have been for her safety. 9.Now we can see __________ a serious problem the population is. 10.I want to buy some stamps. Can you tell me _______ there’s a post office near here? 11.There’s some doubt _________ she will be able to repay the money on time. 12.My radio doesn’t work.. I don’t know ________ is the trouble. 13._______ he doesn’t like them is very clear. 14.I’d appreciate it ______ you carry out the experiment as directed. 15.The fire destroyed ________ was in the building. 16.We know little about the young lady except ______ you told me. 17.I know nothing about her except ________ she is from Canada. 18.________ there is life on another planet is almost impossible. 19.Please give me the book to _______ wins the first prize. 20.The chance _____ he will attend the meeting is very little. 21.Mark wondered ________ you thought of the new film. 22.The old woman was shocked by _________ had happened to her daughter. 23.Lei Fen was always thinking of _______ he could help others. 24.Could you tell me for_________ you have bought this fur coat? 25.________ he wanted to see was an end to all the armies of the world. 26.The problem lies in ________ we lack time to have holidays. 27.__________ Thomas Edison became a great inventor is known to all. 28.______ he felt sorry for was ______ he wasn’t in time to prevent the accident. 29.__________ we will go camping depends on the weather. 30._________ is likely that we can bridge the generation gap. 31.We should help _____ is in need of our help. 32.The reason ________ he was absent was _______ he wasn’t interested in the meeting. 33.The child is fat. That’s ______ he has a sweet teeth. 34.It’s beyond doubt ________ that man will lag behind in the race. 35._______ the doctor doubt is _______ my mother will recover from the serious disease soon. 36.Traditional education taught people to believe ______ being intelligent meant remembering information and writing about it. 37.After three hours’climbing, they reached _______ they thought was the place they’d been dreaming of.
复习专题常见名词性从句最全总结
复习专题常见名词性从句最全总结 一、初中英语名词性从句 1． is known to all is that the earth is smaller than the sun. A. As B. What C. It D. Which 【答案】 B 【解析】【分析】句意：众所周知地球比太阳小。 is known to all 是主语从句，从句中缺少主语，因此用what，选B。 【点评】考查名词性从句，本题涉及what引导的主语从句。 2．It________that the road will be closed tomorrow for repairs. A. was announced B. has been announced C. had been announced D. would be announced 【答案】 B 【解析】【分析】本题考查动词的时态和语态。题干句子中that到句子结束是宾语从句，且从句动词用“will＋动词原形”表示将来，由此推断出空白处谓语动词应用现在的某种时态，在所给四个选项中，只有B项正确。 【点评】考查现在完成时的被动语态，其结构是have/has +been +done。需要注意宾语从句的时态。主句用现在时，从句所需的任何时态。 3．Located between the 16th and the 18th floor, ______ I call my “home” is more like a “bird's nest”. A. which B. that C. what D. where 【答案】 C 【解析】【分析】考查主语从句。What引导主语从句______ I call my “home”且 What在从句中充当call的宾语。故选C。 4．________ we may find interesting is that it usually takes more to be polite. A. That B. What C. Which D. / 【答案】 B 【解析】【分析】句意：我们可能会发现有趣的是通常需要更多的礼貌。此处是主语从句做主语，从句没有引导词，缺少宾语，故答案为B。 【点评】考查名词性从句，本题涉及what引导的主语从句的应用。 5．______ 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
定语从句专项知识点总结汇总
定语从句专项知识点总结汇总 - 定语从句(Attributive Clauses)在句中做定语，修饰一个名词或代词，有时也可以修饰部分或整个句子。 被修饰的名词，词组或代词即先行词。定语从句通常出现在先行词之后，由关系词(关系代词或关系副词)引出。 关系代词有：who, whom, whose, that, which, as。 关系副词有：when, where, why, how。 关系代词和关系副词放在先行词和定语从句之间，起连接作用，同时又可做定语从句的一个成分。当关系代词做宾语时可以省略。 定语从句中的谓语动词必须在人称上和数量上和先行词保持一致。 定语从句分为限制性定语从句和非限制性定语从句。 1 关系代词引导的定语从句 1) who, whom, that 这些词代替的先行词是人的名词或代词，在从句中所起作用如下：
Is he the man who/that wants to see you? (who/that在从句中作主语) He is the man whom/ that I saw yesterday. (whom/that在从句中作宾语) 2) whose 用来指人或物，(只用作定语，若指物，它还可以同of which互换). 例如： Please pass me the book whose (of which) cover is green. 3) which, that 它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等. 例如： A prosperity which / that had never been seen before appears in the countryside. (which / that在句中作宾语) The package (which / that) you are carrying is about to come unwrapped. (which / that在句中作宾语) 关系代词that和which 都可以指物，that 和Who 都可以指人，其用法区别：
名词性从句知识点总结经典(1)
名词性从句知识点总结经典(1) 一、名词性从句 1．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。 2．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories. A. what that B. which C. that D. that what 【答案】 D 【解析】【分析】句意：有人指出，驱除焦虑所起着至关重要的作用是童年美好的回忆。本句时一个主语从句，it作形式主语，真正的主语为that what plays a vital role in driving away one's anxiety is one's sweet childhood memories.，主语从句中又有一个主语从句，且此主语从句中缺少主语，所以用what引导。故选D。 【点评】考查名词性从句，本题涉及what引导的主语从句。 3．________ 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。 【点评】考查名词性从句和定语从句，本题涉及固定句式it is known to us all that…和whom引导的限制性定语从句。 4．Some people believe _______ has happened before or is happening now will repeat itself in the future. A. whatever B. whenever C. wherever D. no matter what 【答案】 A 【解析】【分析】句意：一些人认为之前发生的或现在正在发生的任何事情在将来都会重复发生。Whatever has happened before or is happening now是一个主语从句，whatever既引导起这个主语从句，也在句中做主语。BC项都属于副词的性质，都不能做主语，通常只
名词性从句专题(含答案)
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