名词性从句及习题
名词性从句练习题(含答案)经典
名词性从句练习题(含答案)经典一、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. thatB. howC. whatD. 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．Has it been announced ______?A. when are the planes to take offB. that are the planes to take offC. where are the planes to take offD. when the planes are to take off【答案】 D【解析】【分析】句意: 飞机什么时候起飞已经宣布了吗？此处是when引导的主语从句，且要用陈述句语序，故选D。
【点评】考查名词性从句，it作形式主语，关系副词when引导的从句作真正的主语。
3．In the past decade, our education system too much on grades. However, grades have a direct connection with future success is still a question.A. focused; whetherB. focused; ifC. has focused; whetherD. has focused; if【答案】 C【解析】【分析】考查时态和主语从句。
根据In the past decade,在最近的几十年里，可知句子用现在完成时态，our education system是句子的主语，单数形式，所以第一空填has focused；第二空是主语从句做主语，if是否，不能引导主语从句，所以第二空填whether。
【英语】名词性从句知识点总结及经典习题(含答案)经典
【英语】名词性从句知识点总结及经典习题(含答案)经典一、名词性从句1． is known to all is that the earth is smaller than the sun.A. AsB. WhatC. ItD. 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 has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. 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．___ surprised me most was ____the girl passed the driver test.A. That; thatB. What; howC. What; thatD. 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。
名词性从句练习题及答案
名词性从句练习题及答案1. 主语从句：It is important that you finish your homework on time.- 答案：It is important that you finish your homework on time. (这是正确的句子结构，主语从句是 "that you finish your homework on time".)2. 宾语从句：I believe that he will succeed.- 答案：I believe that he will succeed. (宾语从句是 "that he will succeed".)3. 表语从句：The fact is that we have run out of time.- 答案：The fact is that we have run out of time. (表语从句是 "that we have run out of time".)4. 同位语从句：The news that he won the prize is exciting.- 答案：The news that he won the prize is exciting. (同位语从句是 "that he won the prize".)5. 宾语从句的疑问形式：What did he say he would do?- 答案：What did he say he would do? (宾语从句的疑问形式是"what he said he would do".)6. 宾语从句的否定形式：I don't think that he is honest.- 答案：I don't think that he is honest. (宾语从句的否定形式是 "that he is honest".)7. 宾语从句的省略：He promised to help us.- 答案：He promised to help us. (宾语从句的省略形式是"promised to help us".)8. 宾语从句的连接词：Whoever breaks the law will be punished. - 答案：Whoever breaks the law will be punished. (连接词是"whoever".)9. 宾语从句的时态：I heard that she had left the city.- 答案：I heard that she had left the city. (宾语从句使用了过去完成时 "had left".)10. 宾语从句的虚拟语气：I suggest that he study harder.- 答案：I suggest that he study harder. (宾语从句使用了虚拟语气 "study".)结束语通过这些练习题，学生可以加深对名词性从句的理解，提高在实际语境中运用这些从句的能力。
英语名词性从句技巧(很有用)及练习题
英语名词性从句技巧(很有用)及练习题一、初中英语名词性从句1．—What impresses you most when you visit the Acropolis ?— ________ it is that has brought the grand palace into today's terrible scene.A. WhereB. WhatC. HowD. When【答案】 B【解析】【分析】句意：——当你参观雅典卫城时，你印象最深的是什么？——使我印象最深的是什么将从前宏伟的宫殿变成了今天惨不忍睹的样子。
强调句型的特殊疑问句式：疑问词（如what） is it that+其它，本句强调的是什么使得从前宏伟的宫殿蜕变的，所以用表示内容的what，选B【点评】考查主语从句和强调句，本题强调主语从句的引导词。
2．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties.A. As; whoseB. It; whoseC. As; whomD. 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。
3．Some people believe _______ has happened before or is happening now will repeat itself in the future.A. whateverB. wheneverC. whereverD. 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。
(英语)英语名词性从句解题技巧(超强)及练习题(含答案)含解析
（英语）英语名词性从句解题技巧(超强)及练习题(含答案)含解析一、初中英语名词性从句1．He took a trip to Beijing last week and ________ he saw at the Forbidden City impressed him deeply.A. thatB. howC. whatD. 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．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others.A. it; thatB. what; thatC. that; whatD. 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．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. 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。
高中英语名词性从句练习题及答案(可编辑修改word版)
名词性从句练习名词性从句练习11: help if you can, and our country will improve more quickly and better.A. GivingB. GiveC. GivenD. To give2: ---I will take an umbrella with me today. --- it rains later on in the day?A. HowB. WhatC. How aboutD. What if3: Recently I bought an ancient Chinese vase, was very reasonable.A. which priceB. the price of whichC. its priceD. the price of that 4;After ten years, she changed a lot and look different from he used to be.A. thatB. whomC. whatD. who5: is known to everyone, the moon travels round the earth once every month.A. ItB. AsC. ThatD. What6: He’s got himself into a dangerous situation he is likely to lose control over the plane.A. WhereB. whichC. whileD. why7: Information has been put forward more middle school graduates will be admitted into universities.A. whileB. thatC. whenD. as8: What the doctors really doubt is my mother will recover from the serious disease soon.A. whenB. howC. whetherD. what9: air is to man, so is water to fish.A. sinceB. JustC. LikeD. As10: There is plenty of rain in the south there is little in the north.A. whileB. asC. whenD. so11: several times about it, but he could not give the correct answer.A. Being askedB. Having been askedC. he would askD. He had been asked12: the days went on, the situation there got worse.A. WithB. SinceC. WhileD. As13: everybody is here, let’s set out right away.A. WithB. SinceC. whileD. As14 The science of medicine, progress has been very rapid lately, is perhaps the mostimportant of all the sciences.A. to whichB. in whichC. whichD. with which15: We must do the experiment carefully Miss Liu told us.A. whatB. sinceC. asD. while16: Tony will never forget these days she lived in China with her mother,has a great effect on her life.A. that; whichB. when; whichC. which; thatD. when; that17: I know, they will go to Beijing to watch the Olympic Games in 2008.A. SinceB. so far asC. In caseD. As if18: ---What are you anxious about? --- .A. Whether we can succeedB. If we succeedC. do we succeedD. That we can succeed19: You should put the dictionary you can find it easily.A. whereB. the placeC. the place on whichD. what20: She said to me, “I’ll tell you the result of the test I know it.”A. becauseB. the momentC. afterD. though21: Grandpa used to tell us something about the “Cultural Revolution”he had time to spare.A. as soon asB. asC. so thatD. whenever22: Li Fang is very busy, she’s always helping others with their lessons.A. butB. althoughC. soD. for23: Getting a right job can be difficult the students prepared to deal with the job interview.A. if; won’tB. unless; willC. unless; areD. if; are24: Everything depends on they will support you about it.A. ifB. whichC. whetherD. that25: She won the first prize in the speech contest and surprised us.A. whichB. itC. asD. who26: The Oscar is one of the film prizes offered to any Chinese actor or actress so far.A. which is notB. that have not beenC. that has notD. that has not been27: He made another wonderful discovery, of great important to science.A. which I think isB. which I think it isC. which I think itD. I think is 28:It’s really very dangerous. One more step, the baby will fall into the well.A. orB. soC. butD. and29: She is American, she knows little about American history.A. soB. yetC. andD. therefore30: Information technology is taught in most school, we have entered theinformation society.A. soB.whileC. still D for31: It was quite a long time I made it out what had happened.A. afterB. beforeC. whenD. since32: the text a second time, the meaning will become cleaner to you.A. ReadB. ReadingC. if readingD. When you read33: , so he didn’t come to school last week.A. Though he was illB. Being illC. Having been illD. He was ill34: She tried every way she could find to solve the problem.A. howB. in whichC. thatD. which35: Lily has some idea she’s going to be when she grows up.A. whatB. thatC. asD. which36: you go, you should bear the motherland in mind.A. WhereB. WheneverC. HoweverD. Wherever名词性从句练习21: They are teachers and don’t realize to start and run a company.A. what takes itB. what they tookC. what it takesD. what takes them2: In order to encourage the workers to work hard, the manager decides to award produces the most in the factory.A. whoB. whomC. whomeverD. whoever3: On stepping into the office, the girl was frightened to find that the whole office was fill with looked like tiny worms.A. thatB. somethingC. whatD. anything4: Tom was worried about seemed clearly to the whole family.A. ThatB. WhichC. ThatD. How5: The teacher usually graded the students on they have done.A. thatB. whatC. whichD. how6: We never doubt our school team will win the match against No 3 Mid-school.A. weatherB. thatC. ifD. what7: we can find from the following, the number of students dropping out is going down. A. what B. it C. as D. what8: Will you see to you brother is OK at home while we are out on work.A. this ifB. it thatC. it weatherD. that weather9: To those scientists, it still remains to be a question man can go back to the old days with time machine.A. ifB. thatC. howD. weather10: When woken up, he found he was standing on seemed to be a small piece of rock.A. thatB. whatC. whichD. it11: In one word, the hours the children spend in their one-way relationship with television people undoubtedly affect their relationships with real-life people.A. in whichB. whenC. whichD. that12: ---What about your TEFL test? ---- I have answered all the questions, but not sure I could get a high enough score.A. whatB. ifC. whenD. why13: The treatment will continue until the patient reaches the point he can walk correctly and safely.A. whenB. whereC. whichD. whose.14: the sports meet of our school is held is still not decided.A. WhatB. WhereC. IfD. That15: Excuse me, would you like your tea, white or black? --- With milk, please.A. whether B when C. What D. how16: Finally we arrived at used to a battlefield.A. whatB. whereC. where thereD. it17 ---- It seems that he was succeeded at last in the USA.---But you can never imagineA.what a hard life he has experienced.B.what he has experienced a hard lifeC.he has experienced what a hard life.D.what a hard life has he experienced18: There is a common belief among them rubbish can and should be put to good use.A. whichB. ifC. whetherD. that19: Human beings are different from animals they can use language as a tool to communicate.A. in whichB. in thatC. for thatD. for which20: David says sound right to Helen. That’s why he has made up her mind to leave the matter to him happens.A. Whatever; whateverB. No matter what, whateverC. No matter what, no matter whatD. Whatever; no matter what21: sometimes keeps her awake all night Tom is getting more and more quiet at home. A. That; which B. It; that C. Whether; what D. What; that22: In some countries, called “public schools” are not owned by the public.A. whichB. asC. thatD. what23: ---I rang you at about nine, but there was no reply.---That was probably I was seeing the doctor.A. whyB. whatC. thatD. when24: Word comes some New Zealand guests will come to visit our school tomorrow.A. thatB. whichC. /D. about which25: Dave lost his job and was short of money, so his flat and move in with his brother.A. that he did was to sellB. what he did sellC. what he did soldD. what he did was to sell26.The poor young man is ready to accept help he can get.A.whicheverB. howeverC. whateverD. whenever27.The old tower must be saved, the cost.A.howeverB. whateverC. whicheverD. wherever28.Great changes have taken place in that school. It is no longer it was 20 years ago,it was so poorly equipped.A.what; whenB. that; whichC. what; whichD. which; that29.—Is that the small town you often refer to?—Right, just the one you know I used to work for years.A.thatB. whichC. whereD. what30.Frank’s dream was to have his own shop to produce the workings of his own hands .A.thatB. in whichC. by whichD. how31.I was surprised by her words , which made me recognize silly mistakes I had made .A.whatB. thatC. howD. which32.The place the bridge is supposed to be built should be the cross-river traffic is the heaviest.A.which; whereB. at which; whichC. at which; whereD. which; in which33.The way he did it was different we were used to .A.in whichB. in whatC. from whatD. from which34.Do you have any idea is actually going on in the classroom?A.thatB. whatC. asD. which35.Mary wrote an article on the team had failed to win the game.A．why B．what C．who D．that36.If a shop has chairs women can park their men , women will spend more time in theshop.A.thatB. whichC. whenD. where37.He tried his best to solve the problem, difficult it was.A.howeverB. no matterC. whatever D although38.The old lady’s hand shook frequently . She explained to her doctor this shaking hadbegun half a year before , and ,only because of this , she had been forced to give up her job .A.when ; howB. how ; whenC. how ; howD. why ; why名词性从句练习Period oneKey: 1—5: BDBCB 6-10: ABCDA 11—15: DDBBC 16-20: BBAAB21—25: DACCB 26—30 : BADBD 31—36: BDDCADPeriod two:Key: 1—5: CDCCB 6—10: BCBDB 11—15: DBABD 16—20: AADBA/D21—25: BDDAD 26—30: ABACB 31—35: ACCBA 36—38: DAC。
【英语】英语名词性从句练习题含答案及解析
【英语】英语名词性从句练习题含答案及解析一、初中英语名词性从句1．_________ is known to all is that the earth is smaller than the sun.A. AsB. WhatC. ItD. Which【答案】 B【解析】【分析】句意：众所周知，地球比太阳还小。
复合句的主语是一个名词性从句，从句没有引导词和主语，表示“所……的（事）”，故用what引导，其双重作用，故选B。
【点评】考查名词性从句，本题涉及what引导的主语从句。
2．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others.A. it; thatB. what; thatC. that; whatD. 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．___ surprised me most was ____the girl passed the driver test.A. That; thatB. What; howC. What; thatD. 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。
最新英语名词性从句常见题型及答题技巧及练习题(含答案)
最新英语名词性从句常见题型及答题技巧及练习题(含答案)一、初中英语名词性从句1．We believe ________ you have been devoted to ________ naturally of great necessity.A. that; beingB. all that; beC. that all; areD. what; is【答案】 D【解析】【分析】句意：我们相信你所投入的当然是非常必要的。
分析句子可知，believe 后接宾语从句，宾语从句中you have been devoted to缺少宾语，表示事物故用what；what you have been devoted to为主语，从句作主语，谓语动词用单数，故选D。
【点评】考查名词性从句和主谓一致，本题涉及what引导的主语从句和一般现在时。
2． is clear to the members of the committee is that the President will not give in to their demands.A. WhoB. ItC. AsD. 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。
3．It________that the road will be closed tomorrow for repairs.A. was announcedB. has been announcedC. had been announcedD. would be announced【答案】 B【解析】【分析】本题考查动词的时态和语态。
名词性从句专项练习题及答案含答案解析
名词性从句专项练习题及答案含答案解析一、初中英语名词性从句1．________ the weather will not clear up until next week is bad news for us.A. AsB. IfC. WhetherD. That【答案】 D【解析】【分析】考查主语从句。
句意：直到下周天气才放晴，这对我们来说是坏消息。
此处是that引导的主语从句，that无实义，只其引导作用，故答案为D。
【点评】主语从句属于名词性从句，在名词性从句中，that无实义，只起连接作用，不做句子成分；if/whether起连接作用，不做句子成分，有实义“是否”。
做题时注意看从句是否少成分。
2．It was he said disappointed me.A. that; whatB. what; thatC. that; whichD. which; that【答案】 B【解析】【分析】句意：正是他说的话让我很失望。
这是一个强调句型,"it is/was that..."是固定搭配,"what he said"是被强调部分, 你可以发现去掉"it was that"后, 句子仍然完整。
"what he said"做主语,主语从句中"said"缺宾语用what补足，故选B。
【点评】考查主语从句的强调形式。
3．________ 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 earthB. The sun and not the earthC. Being the sun and not the earthD. 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。
(完整版)高中英语名词性从句及练习题
高考英语-—名词性从句高中英语名词性从句是高考考查的重点，包括主语从句、宾语从句、表语从句及同位语从句。
下面来进行一一讲解。
名词性从句（1)主语从句1。
定义：用作主语的从句叫做主语从句。
2. 构成：关联词+简单句3.引导主语从句的关联词有三类：(1）从属连词that。
如：That they were in truth sisters was clear from the facial resemblance between them。
很明显,她们确是亲姐妹，她们的脸型很相似。
（2) 从属连词whether。
如：Whether he’ll come here isn’t clear。
他是否会来这里还不清楚.(3）连接代词who， whom， whose, what, which, whoever， whatever， whichever 连接副词 where， when， how， why。
如： What she did is not yet known. 她干了什么尚不清楚.How this happened is not clear to anyone. 这事怎样发生的,谁也不清楚。
Whoever comes is welcome。
不论谁来都欢迎。
Wherever you are is my home --—— my only home。
你所在的任何地方就是我的家—-—-我唯一的家。
解释: 1。
主语从句能用it作形式上的主语。
常以it作形式主语的句型有：A。
It+be+形容词（obvious，true, natural, surprising，good, wonderful，funny， possible, likely, certain, probable， etc.)+that从句。
如： It is certain that she will do well in her exam。
毫无疑问她考试成绩会很好。
英语名词性从句练习题20篇及解析
英语名词性从句练习题20篇及解析1.The fact that more than 90% of the students have been XXX.2.What surprised me the most was that the girl passed the driver test.3.Has it been announced when the planes are to take off?A。
XXX答案】A解析】【分析】句意：在他的家庭中有一个规定，谁先回家就要做饭。
whoever引导主语从句，在从句中作主语。
故选A。
点评】考查了名词性从句，本题涉及whoever引导的主语从句的应用。
8．—What do you think of the movie we saw last night?To be honest。
I don't think it is ___ you said it was.A。
that good asB。
as good asC。
as well asD。
well as答案】B解析】【分析】句意：你觉得我们昨晚看的电影怎么样？说实话，我不认为它像你说的那么好。
as good as表示“和……一样好”，符合题意。
故选B。
点评】考查了比较级的用法，本题涉及as。
as的应用。
9．—Do you know ___ the meeting is put off?No。
I have no idea.A。
XXX答案】B解析】【分析】句意：你知道会议推迟到什么时候吗？when表示“什么时候”，符合题意。
故选B。
点评】考查了特殊疑问词的用法，本题涉及when的应用。
10．___ you are going to the party or not。
please let me know in advance.A。
XXX答案】A解析】【分析】句意：无论你是否去参加聚会，请提前告诉我。
whether引导主语从句，作主语。
名词性从句知识点总结及经典习题(含答案)经典
名词性从句知识点总结及经典习题(含答案)经典一、名词性从句1．______excited Jenny most was ______ she finally succeeded in ______seemed to be the most difficult exam to him.A. That; that; whichB. What; that; whatC. That; because; thatD. What; because; which 【答案】 B【解析】【分析】句意：珍妮最兴奋的是对他来说似乎是最困难的考试，她终于成功了。
______excited Jenny most是主语从句，从句中缺少主语，因此用关系代词what ；_____ she finally succeeded in ...是表语从句，从句中不缺少成分，因此用引导词that；______seemed to be the most difficult exam to him.是宾语从句，从句中缺少主语，因此用关系代词what ，故选B。
【点评】考查名词性从句，本题涉及主语从句，表语从句和宾语从句。
2．___ surprised me most was ____the girl passed the driver test.A. That; thatB. What; howC. What; thatD. 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．Some people believe _______ has happened before or is happening now will repeat itself in the future.A. whateverB. wheneverC. whereverD. 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。
名词性从句专项练习题及答案详解
名词性从句专项练习题及答案详解一、初中英语名词性从句1．_________ is known to all is that the earth is smaller than the sun.A. AsB. WhatC. ItD. Which【答案】 B【解析】【分析】句意：众所周知，地球比太阳还小。
复合句的主语是一个名词性从句，从句没有引导词和主语，表示“所……的（事）”，故用what引导，其双重作用，故选B。
【点评】考查名词性从句，本题涉及what引导的主语从句。
2．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. 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．_______ are playing an important part is well known to us all.A. That whoB. Those whoC. Who thatD. Who【答案】 D【解析】【分析】考查主语从句。
句意：谁起着重要作用，这是众所周知的。
主语从句缺少引导词，从句缺少主语，故选D。
4．—Tell me something about your adventure in the rainforest, please.— We lost our way in the forest and ___ made matters worse was ___ night began to fall.A. what; thatB. it; thatC. it; becauseD. what; because【答案】 A【解析】【分析】考查名词性从句的连接词。
名词性从句练习题及答案解析
名词性从句练习题及答案解析第一部分：基础题1. _______ makes his shop different is that it offers more personal services.A. WhatB. WhoC. WhateverD. Whoever2. —It’s thirty years since we last met.—But I still remember the story, believe it or not, _______ we got lost on a rainy night.A. whichB. thatC. whatD. when3. See the flags on top of the building? That was _______ we did this morning.A. whenB. whichC. whereD. What4. —Could you do me a favor?—It depends on _______ it is.A. whichB. whicheverC. whatD. whatever5. These shoes look very good. I wonder _______.A. how much cost they areB. how much do they costC. how much they costD. how much are they cost6. Doris' success lies in the fact _______ she is co-operative and eager to learn from others.A. whichB. thatC. whenD. why7. Mary wrote an article on _______ the team had failed to win the game. A. why B. what C. who D. that8. Do you have any idea _______ is actually going on in the classroom? A. that B. what C. as D. which9. —Why does she always ask you for help?—There is no one else _______, is there?A. who to turn toB. she can turn toC. for whom to turnD. for her to turn10. Elephants have their own way to tell the shape of an object and _______ it is rough or smooth.A. /B. whetherC. howD. what11. Danny left word with my secretary _____ he would call again in the afternoon. A. who B. that C. as D. which12. Mum is coming. What present _______ for your birthday?A. you expect she has gotB. you expect has she gotC. do you expect she has gotD. do you expect has she got13. The way he did it was different ______ we were used to. A. in which B. in what C. from what D. from which14. Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped. A. what; when B. that; which C. what; which D. which; that15. Some researchers believe that there is no doubt ___ a cure for AIDS will be found. A. which B. that C. what D. whether 第二部分：强化题1. We haven’t settled the question of _______ it is necessary for him to study abroad. A. if B. where C. whether D. that2. A warm thought suddenly came to me _______I might use the pocket money to buy some flowers for my mother’s birthday. A. if B. when C. that D. which3. There is much chance _______ Bill will recover from his injury in time for the race.A. that B. which C. until D. if4. Please remind me _______ he said he was going. I may be in time to see him off. A. where B. when C. how D. what5. We saw several natives advancing towards our party, and one of them came up to us. _______ we gave some bells and glasses. A. to which B. to whom C. with whom D. with which6. With his work completed, the businessman stepped back to his seat, feeling pleased _______ he was a man of action.A. whichB. thatC. whatD. whether7. _______ team wins on Saturday will go through to the national championships.A. No matter whatB. No matter whichC. WhateverD. Whichever8. I just wonder _____that makes him so excited.A. why it doesB. what he doesC. how it isD. what it is9. _______ is our belief that improvements in health care will lead to a stronger , more prosperous economy.A. AsB. ThatC. ThisD. It10. Nobody believed his reason for being absent form the class _______ he had to meet his uncle at the airport.A. whyB. thatC. whereD. because11. The shopkeeper did not want to sell for _______ he thought was not enough. A. where B. how C. what D. which12. He noticed that the straight part of the dance was different in the afternoon from _______ it had been in the morning.A. thatB. whereC. whatD. which13. I’d like to work with _______ is honest and easy to get on with. (2006年山东模拟题)A. whoB. whoeverC. whomeverD. no matter who14. When you are reading, make a note of _______ you think is of great importance. A. which B. that C. what D. when15. —Can we get everything ready by the weekend? —It all depends on _______ we can get Mr. Green’s coope ration.A. thatB. whatC. whetherD. if高考趋势与重点名词性从句在历年地高考中几乎都有所涉及，并且每年地命题各有变化。
必备英语名词性从句总复习经典例题、习题
必备英语名词性从句总复习经典例题、习题一、初中英语名词性从句1．I know he's been curious about everything, but that's . Be patient!A. what do kids likeB. what kids likeC. what are kids likeD. what kids are like【答案】 D【解析】【分析】句意：我知道他对每件事都充满好奇, 但这是小孩的样子。
要有耐心。
由题意知：That’s后跟的是一个表语从句, 从句要用陈述句语序, 所以A、C错了．B：what kids like 那是孩子喜欢的东西；D：what kids are like那是小孩的样子．like, 动词, 表示喜欢, 有时态变化形式；be like表示像, like是介词, like没有词形变化．对一切充满好奇是小孩的行为, 故选D。
【点评】表语从句。
2．Located between the 16th and the 18th floor, ______ I c all my “home” is more like a “bird's nest”.A. whichB. thatC. whatD. 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。
3．It is a rule in his family that _______ comes home first should cook the dinner.A. anybodyB. whoC. whoeverD. who that【答案】 C【解析】【分析】句意：在他的家里有个规定，就是先到家的人要先做饭。
whoever 有两个词义：1no matter who，在这种用法时引导一个让步状语从句；2anybody that，在这种用法时，它连接一个名词性从句，在本题中它连接的是主语从句。
名词性从句习题及答案
名词性从句练习一、翻译练习1.我们赢得这场比赛的消息令人激动。
2.他已经成为了他10年前想成为的。
3.那就是他为什么没去开会的原因。
4.她一直在我昨天站的地方逗留了一个小时。
5.月球上有没有生命是个有趣的问题。
6.你能否告诉我他是去还是留？7.她总是在想怎样能把工作做好。
8.我们应该马上对这件事做出决定很重要.9.我们认为你会同意我们的.10.他来不来还不清楚。
11.他在会上说的话使大家很受鼓舞。
12.我希望她早日痊愈。
13.我们将讨论运动会什么时候举行这个问题。
14.她的唯一的缺点是她过于谨慎。
15.她是怎么成功的仍然是个谜。
16.他承认他犯了一个错。
17.飞机将按时起飞这个消息让每个人都很高兴。
18.我主要担心他缺乏经验。
19.什么时候测试还不确定。
20.她说她要把价目表用电子邮件发给他们。
21.我不知道她什么时候回来。
22.我建议我们在这边再待一天。
23.我不能理解为什么他要改变想法。
24.我猜她是你妹妹。
25.谁该干这项工作，这个问题需要考虑。
26.事实是我从来都没有喜欢过他。
27.我们需要的是更多的时间。
28.她告诉我她没有考好。
29.我希望他们再来访问中国。
30.我的看法是我们必须现实一点。
31.无论是谁破坏法律都应该受到惩罚。
32.我不知道她是否喜欢这个颜色。
33.他下达了战士必须过河的命令。
34.问题是我们下一步应该怎么办。
35.这就是你想说的话吗？36.这是你应该牢记在心的。
37.你要什么我就给你什么。
38.无论谁考试不及格都不许回家。
39.但愿我是一只小鸟。
40.我不知道她会不会同意这个计划。
二、选择题1. We should think carefully about ________ Mr. Needham said at the meeting.A. thatB. whatC. whichD. /2. Can you point out ________ two radios are the bestA. whichB. whatC. thatD. whether3. You will easily know ________ video recorders are the same.A. what thoseB. that of thoseC. what all ofD. which of those4. ________ you have seen things like these before doesn't matter.A. IfB. WhetherC. WhatD. When5. I asked her in English ________ she was, and she told me ________ she was an actress.A. who;thatB. who;/C. what;/D. how;that6. She took it for granted ________ I'd be back home an hour ago.A. thatB. whetherC. ifD. when7. We think it possible ________ the local government will be able to solve the housing problem.A. forB. thatC. whenD. how8. Now there is a danger ________ the ground may fall in under the heavy traffic.A. whetherB. ifC. /D. that9. At that time I had no idea ________ I could hand it to him without being seen.A.thatB. howC. whichD. that how10. Last Sunday he promised ________ today, but he hasn't appeared yet.A. that he would comeB. that he will comeC. he will come to see meD. whether he would come11. Last Sunday he made a promise ________ he was free he would take me to Qingdao.A. ifB. thatC. that ifD. whether12. Do you have any idea ________A. when Miss Smith will arriveB. when will Miss Smith arriveC. how will Miss Smith arriveD. why hasn't Miss Smith arrived13. I have almost forgotten ________.A. how Mr. Taylor's likeB. what Mr. Taylor's face is likeC. what Mr. Taylor's face isD. which Mr. Taylor's face is like14. The true value of life is not in ________, but ________.A. how you get ;that you giveB. which you got what you giveC. what you get ;what you giveD. what do you get;what do you give15. Do you know ________A. what is this used forB. what this is used forC. which this is usedD. that this is used for16. ________ surprised me most was ________.A. That;that she spoke Japanese so wellB. What;how could she speak Japanese so wellC. What;that she spoke Japanese so wellD. That;why she could speak Japanese so well17. ________ is to dance.A. That interests Mary reallyB. Which really interests MaryC. What really interests MaryD. What really interest Mary18. We were greatly amused by ________.A. what you have told usB. which you had told usC. what you told usD. that you told us19. These computers are different from ________.A. that we expectedB. what we expectedC. which we have expectedD. what we expect20. ________ Tom liked to eat was different from ________.A. That;that you had expectedB. What ;that you had expectedC. That;what you had expectedD. What;what you had expected名词性从句练习答案一、翻译：1.The news that we won the game is exciting.2.He has become who he wanted to be ten years ago.3.That is why he didn’t come to the meeting.4.She has remained where I stood yesterday for an hour.5.Whether there is life on the moon is an interesting question.6.Can you tell me whether he will go or stay?7.She always thinks of how she can accomplish her job perfectly.8.It is important that we should make a decision about this issue.9.We believe that you will agree with us.10.Whether he will come or not is unknown.11.What he said at the meeting encouraged everyone.12.I hope that she can recover soon.13.We will discuss the question when the sports meeting will be held.14.Her only shortcoming is that she is overcautious.15.How she succeeded is still a myth.16.He admitted that he had made a mistake.17.The news that the plane will take off on time delights everyone.18.My main concern is that he lacks experience.19.When the test will be done is not certain.20.She said that she would email them the price list.21.I have no idea when she will come back.22.My advice is that we can stay here for another day.23.I can’t understand why he changed his idea.24.I guess she is your sister.25.The problem who should do this job needs to be discussed.26.The fact is that I never like him.27.What we need is more time.28.She told me that she did not do well in the exam.29.I hope they can visit China again.30.My opinion is that we need to be realistic.31.Whoever breaks the law should be punished.32.I do not know whether she likes this color.33.He made an order that the soldiers must cross the river.34.The question is what we should do next.35.Is that what you want to say?36.This is what you should keep in mind.37.I can give whatever you want.38.Whoever fails the exam will not be allowed to go home.39.I wish I were a bird.40.I have no idea whether she will agree on/to this plan.二、选择：1-5 BADBC6-10 ABDBA11-15 CABCB16-20 CCCBD。
(英语)英语名词性从句专项习题及答案解析
（英语）英语名词性从句专项习题及答案解析一、初中英语名词性从句1．______ will be in charge of the meeting has not been decided yet.A. WhatB. WhichC. ThatD. 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．Some people believe _______ has happened before or is happening now will repeat itself in the future.A. whateverB. wheneverC. whereverD. 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，通常只能做状语；no matter what只能用来引导状语从句，故选A。
【点评】考查名词性从句，本题涉及"特殊疑问词+ever"引导的主语从句。
3．_______ are playing an important part is well known to us all.A. That whoB. Those whoC. Who thatD. Who【答案】 D【解析】【分析】考查主语从句。
句意：谁起着重要作用，这是众所周知的。
主语从句缺少引导词，从句缺少主语，故选D。
4．Has it been announced ______?A. when are the planes to take offB. that are the planes to take offC. where are the planes to take offD. when the planes are to take off【答案】 D【解析】【分析】句意: 飞机什么时候起飞已经宣布了吗？此处是when引导的主语从句，且要用陈述句语序，故选D。
完整版名词性从句练习题及答案详解
名词从句练习题1 .The place _______ interested me most was the Children's Palace・A. WhichB. whereC. whatD. in which2.Do you know the man ________ ?A. whom I spokeB. to who spokeC. I spoke toD. that I spoke3.Th is is the hotel ________ last month.A. which they stayedB. at that they stayedC・ where they stayed at D・ where they stayed4.Do you know the year _______ the Chinese Communist Party was founded?A. whichB. that C・ when D. on which5.That is the day _______ I'll never forget.A. whichB. on which C・ in which D. when6.The factory ______ we'll visit next week is not far from here・A. whereB. to whichC. whichD. in which7.Great changes have taken place since then in the factory __________ we are working.A. whereB. thatC. whichD. there8.Th is is one of the best films ________ ・A. that have been shown this yearB. that have shownC・ that has been shown this year D. that you talked9.Can you lend me the book ________ the other day?A. about which you taIked B・ which you taIkedC・ about that you taIked D. that you taIked10. ____________ The pen he is writing is mine・A. with which B・ in which C. on which D・ by which11 .They an*ived at a formhouse, in front of ________ sat a small boy.A. whomB. whoC. whichD. that12.The engineer _______ my father works is about 50 years old.A. to whom B・ on whom C. with which D・ with whom13.It there anyone in your class ________ family is in the country?A. whoB. who'sC. whichD. whose14.I'm interested in ________ y ou have said.A. all thatB. all whatC. thatD. which15.1want to use the same dictionary _________ w as used yesterday.A. whichB. whoC. whatD. as16.He isn't such a man _______ he used to be.A. whoB. whom C・ that D. as17.He is good at English, _______ we all know.A. thatB. asC. whomD. what18. ___________ Li Ming, to the concert enjoyed it very much.A. I went with B・ with whom I went C・ with who I went D.I went withhim19.1don't like ______ as you read・A. the novels B・ the such noveIs C. such novels D. same noveIs20.He talked a lot about things and persons _____________ they remembered in the school.A. whichB. thatC. whomD. what21 .The letter is from my sister, ________ i s working in Beijing・A. whichB. thatC. whomD. who22.In our factory there are 2,000 workers, two thiids of ________ a re women.A. them B・ which C・ whom D. who23.You're the only person ________ I've ever met _______ could do it.A. who;/B./; whom C・ whom;/ D./; who24.1lost a book, _______ I can't remember now.A. whose titleB. its title C・ the title of it D・ the title of thatst summer we visited the West Lake, ________ Hangzhou is famous in the world.A. for whichB. for that C・ in which D. what26.1have bought such a watch _________ was advertised on TV.A. thatB. whichC. asD. it27.1can never forget the day __________ w e worked together and the day______ w e spent together.A. when; whichB. which; whenC. what; that D・ on which; when28. _____________ T he way he looks at problems is wrong.A. whichB. whoseC. whatD./29.Th is is the reason ______ he didn't come to the meeting ・A. in whichB. with whichC. thatD. for which30.Th is machine, ______ f or many years, is still working perfectly ・A. after which I have lookedB. which I have looked afterC. that I have looked afterD. I have looked after31.The reason _______ he didn't come was ________ he was ill.A. why; thatB.that;why C・ for that;that D.for which;what32.He is working hard, _______ w ill make him pass the final exam・A.thatB.whichC.for whichD.who33.That is not the way ________ I do it.A./B.whichC.for whichD.with which34.1have two grammars, ________ are of great use・A. all of whichB. either of whichC. both of thatD. both of which35.1want to use the same tools _________ u sed in your factory a few days ago.A. as was B・ which was C・ as we re D・ which36.My neigh hours used to give me a hand in time of trouble, ___________was very kind of them・A. whoB. whichC. thatD. it37.Th is is the magazine ________ I copied the paragraph.A. that B・ which C・ from that D. from which38.He is not such a man _________ w ould leave his work half done.A. thatB. whichC. whoD. as39.You can depend on whatever promise ___________ he makes.A. /B. whyC. whenD. whose40.Smoking, ________ is a bad habit, is, ho we ver, popular.41.・・・ Did you ask the guard ____ happened?… Yes, he told me all _________ he knew.A. what; that B・ what; what C. which; which D・ that; that42.I shall never forget those years __________ I lived on the farmwith the farmers, ________ has a great effect on my life.A. when; who B・ that; which C. which; that D. when; which43.The number of the people who __________ cars _________ i ncreasing.A. owns; are B・ owns; is C. own; is D. own; are44.During the days __________ , he worked as a servant at the Browns.A. followedB. followingC. to followD. that followed45.Is oxygen the only gas _________ helps fire burn?46.The clever boy made a hole in the wall, _________ he could see ______ was going on inside house・A. which; whatB. through which; what C・ through that; what D. what; that47・ Is ______ some German friends visited last week?A. this schoolB. this the schoo 1C・ this school one D・ this school where48.John got beaten in the game, ___________ h ad been expected.A. asB. thatC. whatD. who49.I have bought two ballpens, __________ writes we 11.A. none of themB. neither of themC. neither of whichD. none of which50.All that can be eaten _________ e aten up.A. are beingB. has beenC. had been D・ have been参考答案及解析1. A. which用作关系代词，在定语从句中作主语。
最新英语名词性从句技巧(很有用)及练习题
最新英语名词性从句技巧(很有用)及练习题一、初中英语名词性从句1． is obviously right is to give all children equal opportunities to develop their special gift.A. WhichB. AsC. ThatD. What【答案】 D【解析】【分析】句意：明显正确的做法就是给所有的孩子提供平等发展特殊才能的机会。
连接词引导一个主语从句，并在主语从句中做句子的主语，故选D。
【点评】考查名词性从句，本题涉及what引导的主语从句。
2．_____ is known to us all is that China has launched Shenzhou VII spaceship, ____ made the country's first spacewalk successful.A. That; whatB. What; whichC. It; whichD. 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．It________that the road will be closed tomorrow for repairs.A. was announcedB. has been announcedC. had been announcedD. 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。
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名词性从句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。
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,不充当成分，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.（what既保留自己的疑问含义，又起连接作用，并从句中充当成分）It is known to us how he became a writer.（how既保留自己的疑问含义，又起连接作用，并从句中充当成分）Where the English evening will be held has not yet been announced.（where既保留自己的疑问含义，又起连接作用，并从句中充当成分）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…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.That is why he didn’t come to the meeting.It looks as if it is going to rain.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 this morning宾语从句在句子中起宾语作用的从句叫做宾语从句.宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句.1.宾语从句的连接词(1)从属连词连接宾语从句的从属连词主要有that,if,whether.that引导表示陈述句的宾语从句,而if和whether引导表示“是否”的宾语从句（基本可以互换）.He told that he would go to the college the next yearI don’t know if there will be a bus any more.Nobody knew whether he could pass the exam.（2）连接代词连接代词主要有who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等.连接代词一般指疑问,但what, whatever除了指疑问外,也可以指陈述.I don’t know whom you should depend on.Have you determined whichever you should buy,a Motorola or Nokia cell phone? （3）连接副词连接副词主要有when,where,why,how,whenever,wherever,however等.He didn’t tell me when we should meet again.None of us knows where these new parts can be bought.没有人知道这些的新的零件能在哪里买到.2.动词的宾语从句（1）大多数动词都可以带宾语从句We all expect that they will win , for members of their team are stronger.He told us that they would help us through the whole work.部分“动词+副词”结构也可以带宾语从句I have found out that all the tickets for the concert have been sold out.Can you work out how much we will spend during the trip?（2）动词短语也可以带宾语从句常见的这些词有:make sure确保 make up one’s mind下决心 keep in mind牢记Make sure that there are no mistakes in your papers before you turn them in. （3）可运用形式宾语it代替的宾语从句①动词find,feel,consider,make,believe等后面有宾语补足语的时候,则需要用it做形式宾语而将that宾语从句后置.I think it necessary that we take plenty of hot water every day .我认为每天多喝开水是有必要的.I feel it a pity that I haven’t been to the get-together.我没去聚会,感觉非常遗憾.I have made it a rule that I keep diaries.我每天写日记成了习惯.We all find it important that we (should) make a quick decision about this matter. 我们都认为对这件事马上做出决定很重要.②有些动词带宾语从句时需要在宾语与从句前加it这类动词主要有:hate, take , owe, have, see to务必做到.I hate it when they with their mouths full of food.我讨厌他们满嘴食物时说话.He will have it that our plan is really practical.他会认为我们的计划确实可行.I take it that you will agree with us.我们认为你会同意我们的.When you start the engine, you must see to it that car is it neutral.开启发动机时, 一定要使汽车的离合器处于空挡位置.③若宾语从句是wh-类,则不可用it代替We all consider what you said to be unbelievable.[consider sth. （to be） + 形容词固定搭配， to be 可以省略]We discovered what we had learned to be valuable.[discover (something) to be 为固定句型]3.介词的宾语从句（1）用wh-类的介词宾语从句We are talking about whether we amdit students into our club.The new book is about how Shenzhou 6 manned spaceship was sent up into space. （2）用that,if引导的介词宾语从句有时候except,but,besides三个介词后可见到that引导的宾语从句I know nothing about my new neighbor except that he used to work with a company.4.形容词的宾语从句常用来引导宾语从句的形容词有:sure,certain,glad,please,happy,sorry,afraid,satisfied,surprisedI am sure I will pass the exam.I am sorry that I have troubled you so long.He is glad that Li Ming went to see him when he was ill.5.if,wheter在宾语从句中的区别①if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后②少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether.肯定句中，doubt后用whether或if引导从句，否定句中用thateg.We doubt whether/if he will succeed.We don’t doubt that he will succeed.③whether后可以加or not,但是if不可以，即whether or not.eg.I wonder whether or not you will help me.④在不定式前只能用whether，即whether to do.eg.I wonder whether to go or not.⑤避免歧异时,我们常用whether而不用if.⑥介词后一般不用ifeg.It depends on whether you believe him.【注】主语、表语、同位语从句中表“是否”，只可用whether。