(完整版)高中表语从句的专项习题
高二英语表语从句的构成练习题20题【含答案解析】
高二英语表语从句的构成练习题20题【含答案解析】1. The problem is ____ we can get enough money for the project.A. thatB. whetherC. ifD. what答案解析：B。
本题考查表语从句的引导词。
表语从句中，“whether”表示“是否”，在这里表达问题是我们是否能为这个项目得到足够的钱。
A选项“that”在表语从句中无实际意义，不符合语境。
C选项“if”不能引导表语从句。
D选项“what”在表语从句中要充当主语、宾语等成分，这里不需要，所以选B。
2. Her question was ____ she could pass the exam.A. thatB. whetherC. whichD. why答案解析：B。
表语从句中，“whether”表示“是否”，句意为她的问题是她是否能通过考试。
A选项“that”无实际意义，不能表达是否的含义。
C选项“which”表示“哪一个”，不符合句子语境。
D选项“why”表示“为什么”，与句子要表达的是否能通过考试的意思不符，所以答案是B。
3. The fact is ____ he has made great progress in English.A. thatB. whatC. which答案解析：A。
在表语从句中，“that”起连接作用，无实际意义，在这里用于陈述事实，即他在英语上取得了很大进步这个事实。
B选项“what”在表语从句中要充当成分，这里不需要。
C选项“which”表示“哪一个”，不符合语境。
D选项“how”表示方式等，不适合这里的语境，所以选A。
4. My worry is ____ I will lose my way in the big city.A. thatB. whetherC. whichD. when答案解析：B。
表语从句中，“whether”表示“是否”，句子的意思是我的担忧是我是否会在大城市迷路。
(完整版)高中英语表语从句讲解及专项练习
表语从句讲解及专项练习看法：表语从句是在复合句中作表语的名词性从句。
放在系动词此后,一般结构是“主语 +系动词 +表语从句”能够接表语从句的连系动词有be, look, remain, seem 等。
能够接表语从句的系动词有：1： be（being,been,am,is,are,was,were)2: feel , seem , look, appear ,sound, taste , smell3: stand , lie , remain ,keep, stay4: become ,get , grow , turn ,go ,come, run, fall5: prove, turn outThe trouble is that we are short of money. 困难是我们资本短缺。
That is why stone walls are used instead of fences around New England fields.这就是为什么在新英格兰用石头墙而不用栅栏的原因。
At that time, it seemed as if I couldn't think of the right word anyhow.当时,我忧如怎么也想不出一个合适的字眼来。
引导表语从句的词：隶属连词 that、 whether、 as though、 as if（ That 引导表语从句时，在口语中，间或能够省略。
）关系代词 who, what, which, whom, whose, whatever, whoever, whomever, whichever等；关系副词 when, where, why, how, however, whenever, wherever 等。
由隶属连词that， whether 引导的表语从句。
that 在引导表语从句时无词义，而whether 有词义，意为、“可否”。
高二英语表语从句练习题20题(答案解析)
高二英语表语从句练习题20题(答案解析)1. The question is ______ we can finish our work on time.A. thatB. whetherC. ifD. which答案：B。
解析：本题考查表语从句连接词。
whether表示是否，在表语从句中可表示不确定的情况。
这里表达问题是我们是否能按时完成工作。
that在表语从句中无意义，不表示疑问，不符合题意；if不能引导表语从句；which表示哪一个，与句子语义不符。
2. Her suggestion is ______ we should have a party this weekend.A. whenB. whereC. thatD. what答案：C。
解析：在这个句子中，that引导表语从句，在从句中不充当任何成分，只起连接作用。
她的建议是我们本周末应该举办一个聚会，这里不需要表示时间、地点或事物的连接词，所以when、where、what都不合适。
3. The reason for his success is ______ he is very hard - working.A. becauseB. thatD. as答案：B。
解析：reason作主语时，表语从句的连接词用that，这是固定用法。
because不能引导表语从句；for和as也不能用于这种结构。
4. The fact is ______ he doesn't know the truth at all.A. whichB. thatC. whatD. whether答案：B。
解析：that引导表语从句，用来陈述事实。
句意为事实是他根本不知道真相。
which表示哪一个，what表示什么，whether表示是否，都不符合句子语义。
5. My idea is ______ we can go to the park by bike.A. howB. thatC. whyD. when答案：B。
高二英语表语从句的构成练习题20题(答案解析)
高二英语表语从句的构成练习题20题(答案解析)1.The problem is that he is too lazy.A.whatB.thatC.whichD.when答案解析：B。
本题考查表语从句的连接词。
表语从句中不缺少任何成分，且意思完整，用that 引导。
what 在表语从句中充当主语、宾语或表语；which 在表语从句中有特定的选择范围；when 在表语从句中表示时间。
例如：The problem is what he should do.（问题是他应该做什么，what 在从句中作do 的宾语）。
2.My worry is he may be late.A.thatB.ifC.whetherD.when答案解析：A。
表语从句意思完整，用that 引导。
if 不能引导表语从句；whether 在表语从句中有“是否”之意，但此处不需要表达是否之意；when 表示时间不符合语境。
例如：My worry is that he can't finish the work on time.（我的担忧是他不能按时完成工作）。
3.The question is he will come or not.A.thatB.ifC.whetherD.when答案解析：C。
“是否”用whether 引导表语从句，if 不能引导表语从句。
that 不符合此处需要表达是否之意；when 表示时间不符合。
例如：The question is whether it will rain tomorrow.（问题是明天是否会下雨）。
4.Her suggestion is we should start early.A.thatB.whatC.whichD.when答案解析：A。
表语从句意思完整，用that 引导。
what 在从句中充当成分；which 有选择范围；when 表示时间不符合。
例如：Her suggestion is that we take a bus.（她的建议是我们坐公交车）。
高中英语名词性从句作表语练习题40题(带答案)
高中英语名词性从句作表语练习题40题(带答案)1. Her greatest wish is ____ she can travel around the world one day.A. thatB. whatC. whichD. when答案：A。
解析：在这个句子中，is后面是表语从句。
表语从句的结构完整，不缺少成分，这里表达一种愿望的内容，that引导表语从句，没有实际意义，只起连接作用。
what在从句中要充当主语、宾语等成分，这里从句不缺成分所以不选B。
which表示“哪一个”，不符合句子语境，不选C。
when在从句中作时间状语，这里从句不需要时间状语，所以不选D。
2. The fact ____ we need more practice is quite clear.A. whichB. whatC. thatD. when答案：C。
解析：句中is前面是主语The fact，后面是表语从句。
表语从句we need more practice结构完整，不缺成分。
that引导表语从句，无实际意义，起连接作用。
which在从句中充当成分，这里不需要，不选A。
what在从句中要充当主语、宾语等成分，这里不适用，不选B。
when表示时间，不符合句子语境，不选D。
3. My question is ____ we can get there on time.A. whetherB. whatC. whichD. that答案：A。
解析：is后面是表语从句。
从句we can get there on time 不缺成分，但是这里表示疑问“是否”能按时到达，whether有“是否”的意思，符合语境。
what在从句中要充当成分，这里不需要，不选B。
which表示“哪一个”，不符合句子意思，不选C。
that引导表语从句时无“是否”的意思，所以不选D。
4. The mystery is ____ he disappeared so suddenly.A. whyB. whatC. whichD. that答案：A。
表语从句练习题及讲解高中
表语从句练习题及讲解高中1. 练习题：请将下列句子中的表语从句补充完整。
- The fact is that he was not at home.- The problem is whether we can finish the project on time. - The question is how we can solve this issue.2. 练习题：根据所给的表语从句，选择正确的连接词。
- The reason (why/that) he was late is because he missedthe bus.- The fact (what/which) surprised us is that she won the competition.- The idea (how/that) we can improve the process is to automate it.3. 练习题：将下列句子中的表语从句转换成名词性从句。
- The news that he won the award is exciting.- The possibility that it might rain is low.- The fact that she is the best candidate is undeniable.4. 练习题：请根据上下文，判断下列句子中的表语从句是否正确。
- The fact is he was not at home. (正确/错误)- The problem is that we can finish the project on time. (正确/错误)- The question is whether we can solve this issue. (正确/错误)5. 练习题：请将下列句子中的表语从句翻译成英文。
- 他迟到的原因是他错过了公交车。
高中英语名词性从句作表语练习题40题含答案解析
高中英语名词性从句作表语练习题40题含答案解析1.The problem is _____ we can find a solution to this difficult situation.A.whatB.thatC.whetherD.how答案解析：C。
本题考查表语从句。
“whether”引导的表语从句表示“是否”，在句中意思是问题在于我们是否能找到解决这个困境的办法。
“what”引导表语从句时在从句中充当主语、宾语等成分，本句不缺这些成分；“that”在表语从句中不充当成分且无实际意义，此处不符合语境；“how”引导表语从句表示方式，本句不是问方式。
2.His suggestion is _____ we should start early tomorrow.A.whatB.thatC.whetherD.when答案解析：B。
“that”引导的表语从句在句中不充当成分且无实际意义，他的建议是我们明天应该早点开始，符合语境。
“what”在从句中要充当成分，本句不缺；“whether”表示“是否”，此处不合适；“when”引导表语从句表示时间，本句重点不是时间。
3.The question is _____ he will come on time.A.whatB.thatC.whetherD.how答案解析：C。
“whether”引导表语从句表示“是否”，问题是他是否会准时来。
“what”在从句中要充当成分，本句不缺；“that”不符合语境；“how”表示方式，本句不是问方式。
4.My concern is _____ we have enough time to finish the task.A.whatB.thatC.whetherD.how答案解析：C。
“whether”引导表语从句表示“是否”，我担心的是我们是否有足够的时间完成任务。
“what”在从句中要充当成分，本句不缺；“that”不符合语境；“how”表示方式，本句不是问方式。
(完整版)高中英语语法表语从句练习含答案
表语从句1.__________ is troubling me is _________ I don’t understand __________ he said.A. What; that; whatB. What; what; whatC. That; that; whatD. Why; that; which2. ---I drove to Zhuhai for the air show last week.---Is that __________ you had a few days off?A. whyB. whenC. whatD. where3. Things were not _________ they seemed to be.A. whenB. whyC. thatD. where4. If there was a reason why I achieved such a great success, maybe it is just __________ I have been so lucky.A. thatB. becauseC. in thatD. owing to the fact that5. ---Her ability has never been in doubt.---The question is _________ she is prepared to work hard.A. thatB. ifC. whereD. whether6. The reason why she doesn’t go there was __________ a new job.A. because she gotB. because off gettingC. due to gettingD. that she got7. _________ surprised me was _______ he couldn’t speak English.A. That; thatB. Why; thatC. Who; thatD. What; that8. His first question was _________ Tom had arrived.A. ifB. thatC. whetherD. what9. The question is ________ can be put into practice.A. how you have learnedB. how what you have learnedC. that why you have learnedD. how that you have learned10. A hinge joint is _________ permits the forward and backward movement of a door.A. thatB. whatC. thoseD. which11. One reason why Hamlet is such a successful play is that _________.A. it appeals different to peopleB. different people are appealedC. it appeals to many different peopleD. people find it appealing to them very much12. I think it is _________ you are doing too much.A. because ofB. becauseC. because thatD. due to13. A more important question is _________ these ideas are well or ill found.A. whereB. whenC. howD. whether14. The reason he is ill is _________ he ate too much.A. due toB. thatC. sinceD. because15. Even the mountains here are no longer ________ they used to be.A. the sameB. whichC. thatD. what16. That’s __________ I want to say.A. all whatB. whatC. all whichD. what that17. That’s _____________.A. where out differences lieB. our differences lie thereC. where do our differences lie C. that where out differences lie18. That is __________.A. where lived he thereB. where did he livedC. where he livedD. that where he lived19. The question is ____________.A. whether is it worth doingB. that if it is worth doingC. whether it is worth doing C. if it is worth doing20. Water will continue to be __________ it is today next in importance to oxygen.A. howB. whichC. whatD. as21. That’s __________.A. how did I become a teacherB. how I became a teacherC. how a teacher I becameD. that I became a teacher22. They are just ___________.A. that what shall I haveB. what shall I haveC. that I shall have whatD. what I shall have23. It looked ___________.A. as if it was going to rainB. that as if it was going to rainC. as if was it going to rainD. as if that it was going to rain24. That’s ____________.A. how she did itB. that how did she do itC. how did she do itD. what she did it25. That is _________ we decided to put the discussion off.A. whereB. whichC. thatD. why26. That’s ________ I lived which when I was ten years old.A. whereB. at whichC. there whereD. when27. My suggestion is ________ we should send a few comrades to help them.A. ifB. thatC. when thatD. that where28. With the development of computers, it is_________ man has suddenly become a millionaire of the mind.A. thatB. as ifC. whyD. as29. It looks ________ successful international cultural communication will make the world smaller.A. thatB. as ifC. whyD. as30. The question is __________ we shall perform the experiment.A. whichB. whereC. whoD. thatAADAD DDCBB CBDBD BACCC BDAAD ABBBB。
高二英语表语从句练习题20题(答案解析)
高二英语表语从句练习题20题(答案解析)1. The reason why he was absent from school is _ he was ill.A. thatB. becauseC. forD. as if答案解析：A。
在表语从句中，“that”在从句中不充当成分，只起连接作用。
“because”不能引导表语从句，“for”也不能引导表语从句，“as if”引导表语从句时表示“好像”，不符合语境。
2. My suggestion is _ we should have a discussion about this problem.A. thatB. whatC. whichD. when答案解析：A。
“that”引导表语从句，在从句中不充当成分。
“what”在表语从句中要充当成分，这里从句不缺成分。
“which”和“when”引导表语从句时需在从句中充当成分，不符合语境。
3. The problem is _ we don't have enough time.A. thatB. whetherC. whatD. if答案解析：A。
“that”引导表语从句，在从句中不充当成分。
“whether”表示“是否”，在表语从句中有“是否”的意思时可以用，但这里不需要“是否”的含义。
“what”在表语从句中要充当成分，这里从句不缺成分。
“if”不能引导表语从句。
4. The question is _ we can finish the task on time.A. thatB. whetherC. whatD. which答案解析：B。
“whether”在表语从句中表示“是否”，符合语境。
“that”引导表语从句时没有“是否”的含义。
“what”和“which”在表语从句中要充当成分，这里从句不缺成分。
5. The fact is _ he has made great progress.A. thatB. whatC. whichD. why答案解析：A。
高二英语表语从句练习题20题含答案解析
高二英语表语从句练习题20题含答案解析1. The reason why he is absent is ____ he is ill.A. thatB. becauseC. forD. since答案：A。
解析：表语从句中，连接词that 只起连接作用，不充当句子成分，在本句中符合语法规则。
because、for、since 不能引导表语从句。
2. His suggestion is ____ we should go there by bike.A. thatB. whatC. whichD. when答案：A。
解析：在表语从句中，that 不充当成分，只起连接作用，符合本句语法规则。
what 在从句中要充当成分，不符合本句。
which 和when 也不符合此语境。
3. The problem is ____ we can get enough money.A. thatB. ifC. whetherD. how答案：C。
解析：在本句中表示“问题是我们是否能得到足够的钱”，whether 引导表语从句，表示“是否”。
that 不符合语境。
if 不能引导表语从句。
how 表示方式，也不合适。
4. My opinion is ____ we should start early.A. thatB. whichC. whatD. when答案：A。
解析：that 在表语从句中不充当成分，只起连接作用，符合本句意思。
which、what、when 不符合本句语境。
5. The question is ____ he will come or not.A. thatB. whetherC. ifD. when答案：B。
解析：在表语从句中，表示“是否”用whether，不用if。
that 和when 不符合本句语境。
6. This is ____ I want to say.A. thatB. whatC. whichD. when答案：B。
（完整版）高中表语从句的专项习题
（完整版）⾼中表语从句的专项习题2.5 表语从句的专项习题⼀．定义表语从句就是⽤⼀个句⼦作为表语。
位于系动词之后，说明主语⾝份，特征，属性或状态。
放在系动词之后,⼀般结构是“主语+系动词+表语从句”The problem is puzzling.The problem is when we can get a pay rise.⼆、系动词的分类 (4类)三、引导词四、注意事项1.表语从句要⽤陈述语序。
如：That is where the famous scientist was born.This is why she is so happy today2. 不可以⽤if，⽽⽤whether 连接表语从句(as if 例外）The question is if the enemy is marching towards us. ?The question is whether the enemy is marching towards us. √It looked as if he had understood this question. √3.时态表语从句的复合句中，主句时态和从句时态可以不⼀致。
The question is who will travel with me to Beijing tomorrow.The question is why he cried yesterday.4.语⽓①主语为advice, order, idea, notion, proposal, suggestion, request等⼀些表⽰“建议、劝说、命令”的名词，之后的表语从句中，谓语动词⽤虚拟语⽓。
should+动词原形表⽰，should 可省略。
如：My suggestion is that we (should) start early tomorrow.我的建议是我们明天⼀早就出发。
Our only request is that this should be settled as soon as possible.我们唯⼀的请求就是尽快解决这个问题。
高二英语表语从句练习题40题
高二英语表语从句练习题40题1.The problem is who can help us.A.weC.ourD.ours答案解析：本题考查表语从句。
选项A“we”是主格，不能作表语；选项B“us”是宾格，不能作表语；选项C“our”是形容词性物主代词，不能作表语；选项D“ours”是名词性物主代词，可以作表语，在句中相当于“our problem”，符合表语从句的要求。
2.My question is where the library is.A.thatB.ifC.whetherD.when答案解析：本题考查表语从句。
选项A“that”在表语从句中不充当成分，只起连接作用，但此句不缺连接词；选项B“if”不能引导表语从句；选项C“whether”在表语从句中不充当成分，只起连接作用，表示“是否”，符合题意；选项D“when”在表语从句中充当时间状语，不符合题意。
3.The thing is what we should do next.A.thatC.whetherD.when答案解析：本题考查表语从句。
选项A“that”在表语从句中不充当成分，只起连接作用，但此句不缺连接词；选项B“if”不能引导表语从句；选项C“whether”在表语从句中不充当成分，只起连接作用，表示“是否”，不符合题意；选项D“when”在表语从句中充当时间状语，不符合题意。
“what we should do next”在句中作表语，“what”在表语从句中充当宾语。
4.Her worry is how she can pass the exam.A.thatB.ifC.whetherD.when答案解析：本题考查表语从句。
选项A“that”在表语从句中不充当成分，只起连接作用，但此句不缺连接词；选项B“if”不能引导表语从句；选项C“whether”在表语从句中不充当成分，只起连接作用，表示“是否”，不符合题意；选项D“when”在表语从句中充当时间状语，不符合题意。
【含答案解析】人教版高二英语表语从句练习题40题
【含答案解析】人教版高二英语表语从句练习题40题1. The problem is ____ we can finish the work on time.A. thatB. whatC. whetherD. which答案解析：C。
whether表示“是否”，在这里引导表语从句，表达问题是我们是否能按时完成工作。
that在表语从句中无实际意义，不表示疑问；what在表语从句中要充当主语、宾语等成分，这里不需要；which表示“哪一个”，不符合句子语境。
2. Her question was ____ he had read the famous novel "Pride and Prejudice".A. thatB. ifC. whetherD. which答案解析：C。
这里表示她的问题是他是否读过《傲慢与偏见》这部著名小说，if和whether都可以表示“是否”，但在表语从句中，只能用whether，所以不能选B，that无疑问意义，which表示“哪一个”不符合语境。
3. The fact is ____ he is always late for school.A. thatB. whatC. whetherD. how答案解析：A。
that在表语从句中无实际意义，只起连接作用，这里表达事实是他总是上学迟到。
what要在从句中充当成分，这里不需要；whether表示是否，不符合；how表示方式，也不符合句子意思。
4. His trouble is ____ he can't find his lost wallet.A. thatB. whatC. whetherD. which答案解析：A。
that引导表语从句，无实际意义，这里表示他的麻烦是他找不到丢失的钱包。
what要在从句中充当成分，这里不需要；whether表示是否，不符合；which表示哪一个，不符合语境。
高考专项练习之表语从句(含答案解析,全国统用)
高考专项练习之表语从句1. A paper plant is__________ paper is made．（）A. whichB. whereC. whatD. in which2. He didn't buy the car though it was cheap． That's _____ he had no money at that time．（）A. howB. whyC. becauseD. when3. The question is ______ we should ask them for help．（）A. ifB. whetherC. thatD. what4. The moment ____ Leo will never forget is ____ Mr．Green gave him a lot of valuable advice on how to improve his writing．（）A. that； whenB. that； thatC. when； thatD. when； where5. ________ she couldn't understand was ________ fewer and fewer students showed interest in her lessons．（）A. What； whyB. That； whatC. What； becauseD. Why； that6. One reason why Crystal has become so famous is_________ he is vey quick thinking．（）A. thatB. whetherC. whichD. what7. The TV manufacturer is much more productive．This years'production is three times _____ it was five years ago．（）A. whatB. thatC. thanD. as8. One important thing______ Jane discovered was _______ chimps hunt and eat meat as well．（）A. what； thatB. that；\C. \; ifD. that； that9. I believe that the world is _____ you think it is．So smile at the world and it will smile back．（）A. whatB. howC. thatD. which10. Welcome to Disneyland in Shanghai!This is _____ you can have fun and more than fun．（）A. whereB. howC. whatD. that11. He is very humorous，while his brother is rather serious．That is _________ their difference lies．（）A. whyB. whereC. howD. when12. What I value about my father is ________ he shows love and care for me and my family．（）A. whatB. whichC. howD. that13. As we know，attitude is altitude．Our attitude is ______ has changed everything in our life．（）A. it is what thatB. what is it thatC. what it is thatD. it is that what14. The infrastructure of a country is _______ makes everything run smoothly．（）A. howB. whichC. thatD. what15. The problem is ______ he has enough time．（）A. ifB. whetherC. /D. that16. What she couldn't understand was _______ fewer and fewer students showed interest in her lessons．（）A. whyB. whatC. whichD. how17. -Why didn't you go to see the film yesterday？-The reason was ______ I was ill．（）A. becauseB. thatC. whyD. for p'18. The greatest thing about having a smart phone is with it you can surf the Internet，listen to music and take photos anytime and anywhere．（）A. thatB. howC. whatD. whether19. I hear you are saying that doctors should be highly paid，and this is ________ I disagree．（）A. why B. where C. what D. how20. What is concerning us greatly is ____ the workers held up in that area yesterday will be set free．（）A. thatB. whatC. whenD. which21. -I heard you wanted to have a further study in a foreign college．-Yes，that's _____I try my best to learn English well．A. whenB. howC. whaD. why22. An accident happened on the main road．That is ______ traffic seemed to slow suddenly．（）A. whyB. howC. whenD. what23. -I prefer shutting myself in and surfing the Internet all day on Sundays．-That's I don't agree．You should have a more active life．（）A. whyB. whereC. howD. when24. -I prefer shutting myself in and listening to music all day on Sundays．-That's_______I don't agree．You should have a more active life．（）A. whereB. howC. whenD. what25. -Why do you like working in this company？-The friendly atmosphere is _____ I like．（）A. whichB. thatC. howD. what26. One key point of his speech on arts is _______ arts should serve the people．（）A. thatB. whichC. whatD. /27. The best moment I can now remember was ______ I was informed my first book was to be published．（）A. thatB. whatC. howD. when28. Teens take risks and while we want to encourage independence，sneaking out at night to hang out with friends or dates isn't ________ parents see as being independent．（）A. whereB. whenC. whichD. what29. ---You are late again．But this is ____ the bus broke down on the way．（）A. whyB. thatC. whatD. because30. Perseverance is a kind of quality and that's _______ it takes to do anything successfully．（）A. howB. whichC. whereD. what31. ---The baby looks much worse.---_____is it that has made him ____he is today?A. What; thatB. What; whichC. That; thatD. What; what32. The reason____ Spielberg could not go to the Film Academy was his grades were too low.A. that; thatB. why; thatC. why; becauseD. that; because33. Life is ten percent what happens to you and ninety percent ______you respond to it.A. thatB. whetherC. howD. what34. Home is ________ somebody notices when you are no longer there.A. thatB. whenC. howD. where35. —I prefer shutting myself in and listening to music all day on Sundays．—That's _____ I don't agree．You should have a more active life．A. whereB. howC. whenD. what36. -- What a mess! You are always so lazy!-- I’m not to blame, mum. I am ______ you have made me.A. howB. whatC. thatD. who37. The reason ______he is so upset is ________ his father is coming to school for the teacher-parent meeting today.A. why; becauseB. for what; thatC. for what;because D. why; that38. As John Lennon once said, life is_____ happens to you while you are busy making other plans.A. whichB. thatC. whatD. where39. — It is not clear whether or how Sandy has influenced the vote．— That's I don’t agree Obviously, the storm was in O bama’s favor.A. whatB. whereC. whenD. how40. ---Are you firmly against any independence move by Taiwan?---Of course. That’s ______ our basic interest lies.A. whyB. whenC. whereD. in which41. ______ different life today is from ______ it was fifty years ago.A. What a; whatB. What a; howC. How; whatD. What; what42. A ship in the harbor is safe，but that’s not __________ ships are built for．A. whatB. thatC. whyD. how43. The question that puzzled them is ____ they can get rid of the air pollution in the area.A. how is it thatB. that howC. that it is howD. how it is that44. The Oscar Award is ______ all outstanding actors and actresses all ______ .A. what; dream to winB. something; look forward to winC. what; dream of winningD. something; look forward to winning it45. The hip-pop singer is always drawing attention to issues t hat are usually ignored. That’s ____ is so great about him.A. thatB. whatC. allD. how46. The question that puzzled them is ____ they can get rid of the air pollution in the area.A. how is it thatB. that howC. what is itD. how it is that47. What is concerning us greatly is ____ the workers held up in that area yesterday will be set free.A. thatB. whatC. whenD. which48. —These days I feel exhausted and lack strength.—That’s _____too much drinking and poor diet lead.A. whatB. whichC. whyD. where49. — Do you think it wise for Chinese mothers to try to do everything for their children?—No, that’s ______ they are mistaken.A. whereB. whenC. soD. how50. ----That is ________ you spent your summer holiday, isn’t it?---- That’s right.A. whereB. whichC. whatD. if【答案】1. B2. C3. B4. A5. A6. A7. A8. D9. A 10. A 11. B 12. D 13. C 14. D 15.B16. A 17. B 18. A 19. B 20.C21. D 22. A 23. B 24. A 25.D26. A 27. D 28. D 29. D 30.D31. D 32. B 33. C 34. D 35.A36. B 37. D 38. C 39. B 40.C41. C 42. A 43. D 44. C 45.B46. D 47. C 48. D 49. A 50.A【解析】1.答案B，系动词后为表语，所以此处is后面是表语从句，在从句中不缺少成分，所以可以加上状语，D选项不能引导表语从句，which和what作主语、宾语、表语，不作状语，Where做状语．选B．考查表语从句，句意：纸厂就是纸被制造的地方．先确定从句类型，在找连接词．2.C 考查名词性从句．本句是一个表语从句，that's because…是英语的固定说法"那是因为…"所以用because 来引导．how如何；why为什么；when什么时间．根据句意：那是因为他当时没钱．所以答案选C．虽然那辆车很便宜，但他没有买那辆车，那是因为他当时没钱．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，3.B 考查名词性从句．根据句意：问题是我们是否应该向他们求助．whether引导表语从句表示"是否"．if不能引导表语从句，在名词性从句中if 只能引导宾语从句．本从句是一个表语从句，所以答案选B．．问题是我们是否应该向他们求助．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，4.答案：A 考查定语从句．经过分析句子结构可知，这个句子中包含了一个定语从句和一个表语从句．在定语从句中，关系词指物，并且在定语从句中作宾语，故用that；在表语从句中，表语从句中的引导词在从句中作时间状语，故用when．故选A．雷欧永远不会忘记的时刻是格林先生就如何提高写作水平给了他许多宝贵的建议．定语从句又称为形容词性从句，综观历年高考试题，我们可以发现该语法项目是测试中的热点与难点，解定语从句的题目首先要知道哪一句是主句，哪一句是从句，被修饰的词是谁，从句中的句子成分缺失什么，根据缺失成分的不同从而选出相对应的关系代词或者关系副词，从而选出正确的答案，解题的关键是从句句子的成分分析．5.答案是A．考查名词性从句，分析句子结构"________ she couldn't understand"是一个主语从句，从句中缺少understand的宾语，所以用what引导，what做从句的宾语；fewer and fewer students showed interest in her lessons是一个表语从句，根据句意：她不能理解的是为什么越来越少的学生对她的课表现出兴趣，所以用why来引导．故答案选A．她不能理解的是为什么越来越少的学生对她的课表现出兴趣．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，那么就找到了解题的路子．名词性从句的解题可以从分析从句的句子结构开始，看从句是否缺少主语、宾语、表语、定语等句子成分．然后具体问题具体分析．6.答案为A．本题考查名词性从句中引导词的运用．题干空格后面是be 动词后面的表语从句，从句从意思到成分都是完整的，所以选择不担任成分又没有意义的that；that在表语从句中仅仅起着结构上的作用，但是不能省略，答案选择A．B项whether表示"是否"，不符合题意；C项which表示选择"哪一个"，并且在从句中要担任成分，所以不符合题意；D项what表示选择"所，什么"，并且在从句中要担任成分，所以不符合题意；Crystal变得如此出名的一个原因是他的思维快．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．7.答案：A．本句考查倍数的表达法．倍数可以用倍数+what从句来表达．如：The production is now three times what it was ten years ago．现在的产量是十年前的三倍．这里 what相当于the production that，故选A．电视生产商的产能比以前高多了．今年的产量是五年前产量的三倍．本题考查倍数表示法．英语中倍数的表示法有三种：倍数+as…as…；倍数+比较级+than；倍数+thesize/length/weight/wideth/height of．学习时，要注意区分和掌握．8.答案为D．本题考查从句中引导词的选择．题干中第一空格后面是修饰和限制名词thing的定语从句，把先行词the important thing带入到定语从句，完整的定语从句是"Jane discovered the important thing"；可见the important thing在从句中充当discovered的宾语．定语从句中that可以在从句中做主语或宾语，做宾语的关系词可以省略；所以根据第一空排除A，what不引导定语从句；第二空题干空格后面是be 动词后面的表语从句，从句从意思到成分都是完整的，所以选择不担任成分又没有意义的that；that在表语从句中仅仅起着结构上的作用，但是不能省略，由此排除B和C，答案选择D．Jane发现的一件重要的事是黑猩猩也猎取并吃肉．本题考查从句的引导词：在分清从句性质的基础上，理解各引导词的用法再做判断．9.答案为A．本题考查名词性从句中引导词的运用．题干空格后面是be 动词后面的表语从句，表语从句中插入了插入语you think；去掉you think发现从句中缺少表语．名词性从句中，what在从句中可以充当表语，由此判断答案是C．B项是连接副词how在从句中表示方式，不做表语，所以不符合题意； C项that连接代词在从句中不能担任成分，所以排除；D项which在名词性从句中表示选择，所以不符合题．我相信世界是你所认为的那样．所以微笑着面对世界世界也会对你微笑．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．10.答案为A．本题考查名词性从句中引导词的运用．题干空格后面是be 动词后面的表语从句，表示"在这个地方你能玩得开心并且获得的不仅仅是开心"；可见从句中缺少的是"在…地方"；名词性从句中where可以在从句中充当地点状语表示"在…地方/方面"，由此判断答案是A．B项是连接副词how在从句中表示方式，不符合题意； C项连接代词在从句中不能充当状语，所以排除；D项that在名词性从句中不担任成分，不表达意思，而本句意思不完整，所以不符合题．欢迎来到上海迪士尼！这是你能玩得开心并且不仅仅获得开心的地方．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．11.答案为B．本题考查名词性从句中引导词的运用．题干空格后面是is 动词后面的表语从句，从句中lie为不及物动词，缺少地点状语表示"在于…地方/方面"．名词性从句中，where在从句中可以充当地点状语，由此判断答案是B．A项表示原因，C项表示方式、D项表示时间，均不符合题意．他很幽默而他的哥哥很严肃．这儿就是他们的区别所在．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．12.答案为D本题考查表语从句．在本句中"____ he shows love and care for me and my family"作为整个句子的表语从句，因为该从句表达意思完整，不缺成分，故应该选关系代词"that"．关于父亲我所珍惜的是他对我以及家人的爱和关心．名词性从句考查重点在关系词的选择．13.答案为C．本题考查名词性从句中引导词、语序和强调句型的综合运用．题干空格后面是be 动词后面的表语从句，从句中缺少的是主语．名词性从句中，what在从句中可以充当主语，而主语what又被强调句型所强调．强调句型的基本结构是"It be+被强调部分+that（被强调的是人可以用who）+其它"．如果被强调的是特殊疑问词，特殊疑问词要放在句首，构成"特殊疑问词+be it that+其它"，本题中被强调的是what，所以结构是"What is it that…"．本句是名词性从句中的表语从句，必须用陈述语序，因此陈述语序为"what it is that"，由此判断答案是C．众所周知，态度就是高度．我们的态度就是我们生活中改变一切的事物．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．14.答案D．考查名词性从句．分析句子可知表语从句"_______ makes everything run smoothly"句中缺少主语，所以用what引导表语从句，how 引导表语从句只能在句中做状语，which可以做主语但是意义是"哪一个"，that在表语从句中不做任何的成分只起连接作用，故答案选D．一个国家的基础设施使一切顺利．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，15.答案：B分析句式可知，"______ he has enough time"放在is后面是一个表语从句，根据句意填whether，意思"是否"；if不能用来引导表语从句．问题是他是否有足够的时间．考生在答题时先分析句子结构，在根据名词性从句知识做出选择，尤其是要知道if不能用来引导表语从句．16.答案A．考查连词．根据句子结构可知，What she couldn't understand 主语从句，"____ fewer and fewer students showed interest in her lessons"为表语从句，从句中缺少原因状语．根据句意：她无法理解的是，为什么越来越少的学生对她的课感兴趣．所以用why来引导，答案选A．她无法理解的是，为什么越来越少的学生对她的课感兴趣．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，17.答案：B．分析句子的结构可知，be动词was后面为一个完整的句子I was ill，所以用that来引导，因为本句的主语就是The reason，所以再用because来引导表语从句则显得重复，可排除；故选B．--你昨天为什么没有去看电影？--因为我生病了．本题考查表语从句，要会分析句子的成分，并且掌握that引导名词性从句时在从句中不作任何成分．18.答案是A．考查表语从句．句意是：拥有一部智能手机的最大好处就是你能随时随地用它上网，听音乐和拍照．所以用连接词that引导从句．how 怎么，表示方式；what 什么；whether 是否．故选A．拥有一部智能手机的最大好处就是你能随时随地用它上网，听音乐和拍照．解答此类题目，首先要掌握句意，然后分析句型，根据相关语法选择正确的答案．19.B 考查名词性从句．这是一个表语从句，根据句意：我听说你说医生应该得到高薪，这是我不同意的地方．所以用疑问副词where来引导．what是指不同意的内容，why是不同意的原因，故答案选B．我听说你说医生应该得到高薪，这是我不同意的地方．名词性从句一直是高考考查的热点，近几年的高考题主要考察在具体语境中对what和that的辨析，此外，也要求学生对定语从句和名词性从句有清晰的辨认．首先我们要判断它是哪个名词性从句．名词性从句是主句的一部分，可以充当主语、宾语、表语、同位语．就是说，如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语，20.答案：C题干中the workers held up in that area yesterday will be set free是作系动词的表语，是一个表语从句；从句结构完整，需要知道的是时间，要用连接副词when．故选C．让我们非常关心的是那个地区昨天被绑架的工人什么时候会被释放．在句子中起名词作用的各种从句统称为名词性从句．根据它们在句中的语法作用，这类从句又可分为主语从句、同位语从句、表语从句和宾语从句．21.答案为D．本题考查名词性从句中引导词的运用．题干中空格后面需要的是表语从句，that's when…那就是…的时间；That's how…那就是做…的方式；That's why…那就是…的原因；what在名词性从句中可做主语、宾语、表语或定语，表示"所、什么"，本题的从句中不缺主语、宾语、表语或定语，所以排除what；根据句意，答案是D．--我听说你想要在外国大学进一步深造．--是的．那就是我尽力学好英语的原因．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．22.答案是A．本题考查表语从句中的引导词；题干中is后面的表语从句；that's why那就是…原因；that'when 那就是…时间； that's how 那就是如何…；what在名词性从句中可做主语、宾语、表语或定语，表示"所、什么"，本题的从句中不缺主语、宾语、表语或定语，所以排除what；根据句意，发生事故交通变慢的原因，故答案是A．在主干道上发生了一起车祸．那就是为什么交通突然似乎慢下来的原因．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．23.答案是B．本题考查表语从句中的引导词；题干中is后面的表语从句；that's why那就是…原因；that's where 那就是…地方/方面；that's how 那就是如何…；that's when 那就是…时间；根据句意，那就是我不赞成的方面，故答案是B．--星期天我宁愿把自己关在家里整天上网；--那就是我不赞成的方面．你应该过更活跃的生活．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．24.答案A．题中的____ I don't agree是一个表语从句．从句中的动词agree是一个不及物动词，后面不能直接加宾语．根据句意，这是我不同意的"地方"，在这里指"方式"，故选择where表示抽象的地点状语．故选A．句意：--在星期天我宁愿把自己关在家里，整体听音乐．---那就是我不同意的地方．你本应该有一个更为积极的生活．本题考查表语从句中连接词的使用，要分析表语从句中句子的结构是否完整和结合语境选择出正确选项．25.答案是D．本题考查名词性从句中的引导词．is后面的表语从句中缺少的是like的宾语；how为副词，不做宾语，排除C；that在名词性从句中不担任成分，排除B；which 在名词性从句中表示选择，本题中无选择的含义，排除A；what在名词性从句中可做主语、宾语、表语或定语，表示"所、什么"；故本题选择D．--你为什么喜欢在这家公司工作？--我所喜欢的是友好的氛围．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．26.答案：A根据"arts should serve the people"作为一个完整的句子，用在了系动词is之后，因此该句是表语从句；A．连接词that在表语从句中没有任何意义，只起连接作用，但通常不能省略；B．which 哪一个；C．what通常在表语从句中作主语，宾语和表语；由于从句表达了完整的意思，故选A对于艺术他讲话的一个关键点就是艺术应该为人民服务．本题主要考查了表语从句的用法．做本题时，首先可以根据句子的结构特点，判断出该句为表语从句；其次应熟练掌握表语从句中连接词的用法．例如表语从句中的that虽然不作任何成分，但通常不能省略．27.答案：D．根据The best moment was 说明后面整句是表语从句，而表语从句 I was informed my first book was to be published．根据句意，现在我能记得的最好时刻是当我被告知我的第一本书将被出版．可知句子不完整，缺时间状语，故选D．其中I can now remember 是定语从句现在我能记得的最好时刻是当我被告知我的第一本书将被出版．本题考查表语从句的连接词，在充分分析句型基础上便能选出正确答案．其中I can now remember 是定语从句，可删去不看．故题中从句是跟在"was"后面的，属于表语从句．28.答案：D 根据Teens take risks and while we want to encourage independence，sneaking out at night to hang out with friends or dates isn't 说明后面整句是表语从句，而表语从句parents see as being independent 中句子不完整，缺成分，see…as把…视作，看作，故选D．青少年冒着风险，尽管我们想鼓励独立，晚上偷偷和朋友溜出去闲逛或约会不是父母所视为的独立．本题考查表语从句的连接词，在充分分析句型及了解see…as把…视作，看作，基础上便能选出正确答案．29.答案为D．本题考查名词性从句中引导词的运用．题干空格后面是be 动词后面的表语从句，表示"因为公共汽车在路上出故障"；可见从句中缺少的是"原因"，做状语；名词性从句中because可以引导表语从句说明具体的原因，由此判断答案是D．A项是连接副词why连接的是具体的"结果"，不符合题意； B项that在名词性从句中不担任成分，不表达意思，而本句意思不完整，所以不符合题．C项连接代词what在从句中不能表示原因，做状语，所以排除；你又迟到了．但是这是因为公共汽车在路上出故障了．名词性从句考查的关键是连接词的选用和语序，因此，我们首先要搞清从句的性质，掌握各连接词的用法，在此基础上判断．此外，关注名词性从句用陈述语序．30.答案：D．本题是个并列句，that替代上面的内容，品质，根据 That's可知后面整句是表语从句，而表语从句it takes to do anything successfully句子不完整，缺take的宾语，故选D．坚持是一种品质品质，要做好任何事情都需要有它．本题考查表语从句的连接词，在充分分析句型基础上便能选出正确答案．31.强调句型的特殊疑问句形式为：特殊疑问词+be +it+ that+其它？第一个空是考查强调句型的特殊疑问形式，故填what；第二个空是表语从句，表语从句中缺少he is的表语，故填what。
高二英语表语从句练习题20题(带答案)
高二英语表语从句练习题20题(带答案)1. The problem is ____ we can get enough money for the project.A. thatB. whetherC. ifD. what答案解析：B。
本题考查表语从句的连接词。
whether表示“是否”，在表语从句中引导一般疑问句的内容。
这里的意思是问题在于我们是否能为这个项目得到足够的钱。
that在表语从句中无实际意义，不表示疑问，所以A不符合题意。
if不能引导表语从句，C错误。
what在表语从句中要充当主语、宾语等成分，而此处不需要，D也不正确。
2. Her question was ____ would take care of the children while she was away.A. whoB. whomC. whichD. that答案解析：A。
这里考查表语从句的连接词。
who在表语从句中作主语，表示“谁”，句意为她的问题是她不在的时候谁来照顾孩子们。
whom在从句中作宾语，这里需要的是主语，B错误。
which表示“哪一个”，不符合句子语境，C错误。
that无实际意义，不表示疑问，D 不符合题意。
3. The reason for his success is ____ he never gives up.A. becauseB. thatC. whatD. which答案解析：B。
本题中that引导表语从句，在句中无实际意义，只起连接作用。
句意为他成功的原因是他从不放弃。
because不能引导表语从句，A错误。
what在表语从句中要充当成分，这里不需要，C错误。
which不能引导表示原因的表语从句，D错误。
4. It seems ____ he has known the truth.A. as ifB. ifC. whenD. that答案解析：A。
as if表示“好像”，引导表语从句，句意为看起来好像他已经知道了真相。
高二英语表语从句的构成练习题20题(带答案)
高二英语表语从句的构成练习题20题(带答案)1. The problem is ______ we can get enough money for the project.A. thatB. ifC. whetherD. what答案解析：C。
本题考查表语从句的连接词。
表语从句中，当表示“是否”的概念时，如果从句中有or not（ 本题没有），则可以用whether 或者if，但如果没有or not且从句位于句首时，只能用whether。
这里表示“问题是我们是否能为这个项目得到足够的钱”，所以用whether。
A选项that在表语从句中无实际意义，不符合语境。
D选项what在表语从句中要充当成分，这里不需要，所以也不选。
2. Her suggestion is ______ we should have a party this weekend.A. whichB. thatC. whenD. how答案解析：B。
在这个句子中，表语从句“we should have a party this weekend”是一个完整的句子，不缺少成分，所以用that引导。
A 选项which在表语从句中要充当成分，表示“哪一个”，不符合句子要求。
C选项when表示时间，D选项how表示方式，这两个选项代入句子后句子语义不通。
3. The question is ______ he will come to the meeting tomorrow.A. ifB. whetherC. thatD. what答案解析：B。
这里表示“问题是他明天是否会来参加会议”，表语从句中表示“是否”，且从句位于句中，用whether或者if都可以，但是在正式文体中，更倾向于用whether。
A选项if虽然也有“是否”的意思，但没有whether正式。
C选项that无实际意义，不符合句子语境。
D选项what在表语从句中要充当成分，这里不需要。
高中英语名词性从句作表语练习题50题(答案解析)
高中英语名词性从句作表语练习题50题(答案解析)1. The problem is ______ we can get there on time.A. ifB. whetherC. thatD. which答案解析：B。
在这个句子中，is后面的从句作表语。
根据句子意思，这里表达的是“是否”能按时到达那里的问题，if不能引导表语从句，whether表示“是否”，可以引导表语从句，that引导表语从句时无实际意义，which表示“哪一个”不符合句意，所以选B。
2. Her question was ______ he would come back.A. whenB. whatC. thatD. who答案解析：A。
此句中，was后的从句作表语。
从句中缺少表示时间的状语，表达她的问题是他什么时候回来，what表示“什么”，that 无实际意义，who表示“谁”，都不符合句子语境，所以选A。
3. The fact is ______ he has never been to Paris.A. whichB. whatC. thatD. when答案解析：C。
句中is后面的从句为表语从句。
从句内容完整，不缺成分，that引导表语从句在从句中不充当任何成分，只起连接作用，which在表语从句中要充当成分，what表示“什么”，when表示“时间”，这里不需要，所以选C。
4. My idea is ______ we should start at once.A. ifB. thatC. whenD. what答案解析：B。
在这个句子里，is后的从句作表语。
从句表达的是一种想法的内容，即我们应该马上开始，从句结构完整，that引导表语从句符合要求，if不能引导表语从句，when表示时间，what表示“什么”不符合句意，所以选B。
5. The trouble is ______ I have lost his address.A. thatB. whatC. whichD. when答案解析：A。
高中英语名词性从句作表语练习题50题(答案解析)
高中英语名词性从句作表语练习题50题(答案解析)1.The problem is ____ he can come on time.A.thatB.whetherC.whatD.how答案解析：B。
“The problem is whether he can come on time.”中“whether he can come on time”是表语从句，表示问题在于他是否能准时来。
A 选项“that”在表语从句中一般无实际含义，在此处不合适；C 选项“what”在表语从句中要充当成分，此处不需要；D 选项“how”表示方式，不符合语境。
2.My concern is ____ she will pass the exam.A.thatB.ifC.whetherD.when答案解析：C。
“My concern is whether she will pass the exam.”中“whether she will pass the exam”是表语从句，表示我的担忧是她是否能通过考试。
A 选项“that”在表语从句中一般无实际含义，在此处不合适；B 选项“if”一般不能引导表语从句；D 选项“when”表示时间，不符合语境。
3.The question is ____ we should start the project.B.whenC.whereD.how答案解析：B。
“The question is when we should start the project.”中“when we should start the project”是表语从句，表示问题是我们应该什么时候开始这个项目。
A 选项“that”在表语从句中一般无实际含义，在此处不合适；C 选项“where”表示地点，不符合语境；D 选项“how”表示方式，不符合语境。
4.His worry is ____ they will finish the task on time.A.thatB.whetherC.whatD.how答案解析：B。
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2.5 表语从句的专项习题一．定义表语从句就是用一个句子作为表语。
位于系动词之后，说明主语身份，特征，属性或状态。
放在系动词之后,一般结构是“主语+系动词+表语从句”The problem is puzzling.The problem is when we can get a pay rise.二、系动词的分类 (4类)三、引导词四、注意事项1.表语从句要用陈述语序。
如：That is where the famous scientist was born.This is why she is so happy today2. 不可以用if，而用whether 连接表语从句(as if 例外）The question is if the enemy is marching towards us. ☓The question is whether the enemy is marching towards us. √It looked as if he had understood this question. √3.时态表语从句的复合句中，主句时态和从句时态可以不一致。
The question is who will travel with me to Beijing tomorrow.The question is why he cried yesterday.4.语气①主语为advice, order, idea, notion, proposal, suggestion, request等一些表示“建议、劝说、命令”的名词，之后的表语从句中，谓语动词用虚拟语气。
should+动词原形表示，should 可省略。
如：My suggestion is that we (should) start early tomorrow.我的建议是我们明天一早就出发。
Our only request is that this should be settled as soon as possible.我们唯一的请求就是尽快解决这个问题。
②As if/though引导的表语从句时，从句谓语多用虚拟语气,这是因为从句中的情况与事实不相符。
具体来说，如果从句表示与现在事实相反，谓语动词用一般过去式；如果从句表示与过去事实相反时，谓语动词“had+done”，如果从句表示将来的可能性不大，用would(might ,could )+动词原形，如：Li Lei is now in a new jacket . he looks as if he were an American boy.The girl is giving us a vivid description of moon. It seems as if she had been to the moon many times.但是，如果as if ,as though 引导的表语从句所表示的与事实相符，从句则用陈述语气，如：The clouds are gathering. It looks as if is going to rain.5.记住两个句型①The reason is that…②That is why （because）…如：The reason is that he didn't catch the bus. 理由是他没有赶上公共汽车。
That is why he came late.那就是他晚的原因。
That is because he didn't catch the bus. 那是因为他没有赶上公共汽车。
专项练习一、单项选择1.The question is ________ we will have our sports meet next week.A. thatB. ifC. whenD. whether2.The reason why he failed is ________he was too careless.A. becauseB. thatC. forD. because of3. Go and get your coat. It’ s ________you left it.A. whereB. thereC. there whereD. where there4.The problem is _________to take the place of Ted.A. who can we getB. what we can getC. who we can getD. that we can get5.What I want to know is ________ he likes the gift given by us.A. thatB. ifC. whetherD.不填6.The reason is_________ I missed the bus.A. thatB. whenC. whyD. what7.That is _______ we were late last time.A. thatB. whenC. whyD. what8. She looked _________ she were ten years younger.A. thatB. likeC. asD. as though9.—I fell sick!—I think it is _______ you are doing too much.A. whyB. whenC. whatD. because10. The reason why he hasn’t come is ___________.A. because his mother is illB. because of his mother’s being illC. that his mother is illD. for his mother is ill11. —He was born here.— That is _______ he likes the place so much.A. thatB. whatC. whyD. how12.That is ________ Lu Xun once lived.A. whatB. whereC. thatD. why13._______your father wants to know is________ getting on with your studies.A. What; how are youB. That；how you areC. How；that you areD. What；how you are14. The trouble is__________ we are short of tools.A. whatB. thatC. howD. why that15. America was __________was first called “India” by Columbus.A. whatB. whereC. the placeD. there where16. China is becoming stronger and stronger. It is no longer_________ .A. what it used to beB. what it was used to beingC. what it used to beingD. what it was used to be17. ________he really means is ________he disagrees with us.A. What … thatB. That … whatC. What … whatD. That … what18. The energy is ________ makes the cells able to do their work.A. thatB. whichC. whatD. such19 —I drove to Zhuhai for the air show last week.—Is that_______ you had a few days off？A. why B .what C. when D. where20 .I had neither a raincoat nor an umbrella ________I got wet through.A. It’s the reasonB. That’s w hyC. There’s whyD. It’s how21. See the flags on top of the building? That was ________ we did this morning.A. whenB. whichC. whereD. what22. —Are you still thinking about yesterday’s game?—Oh, that’s _________.A. what makes me feel excitedB. whatever I feel excited aboutC. how I feel about itD. when I feel excited答案1~5: DBACC 6~10 :ACDDC 11~15:CBDBA 16~20: AACAB 21~23: DAA。