高中英语语法名词性从句练习题含答案
名词性从句练习题
1. _____ we need more practice is quite clear.
A. When
B. What
C. That
D. /
2. _____ I accept the gift or refuse it is none of your business.
A. If
B. Whether
C. Even if
D. No matter when
3. _____ he is doing seems quite difficult.
A. How
B. That
C. Which
D. What
4. _____ that there is another good harvest this year.
A. It says
B. It is said
C. It was said
D. He was said
5. _____ that she has received a doctor…s de gree.
A. It‟s a splendid news
B. This is a splendid news
C. It…s splendid news
D. This is splendid news
6. _____ still needs to be discussed.
A. How is the plan to be carried out
B. How the plan is to be carried out
C. Why is the plan carried out
D. Why the plan carried out
7. _____ is unknown to us all.
A. Where did she put it
B. Where she put it
C. That where she put it
D. In which she put it
8. _____ nothing to do with us.
A. What he did is
B. What he has done is
C. What did he do has
D. What he has done has
9. That…s _____ the Party called on us to do.
A. what
B. that
C. how
D. why
10. The reason why I have to go is _____ if I don…t.
A. that she will be disappointed
B. because she will be disappointed
C. on account of her being disappointed
D. that she will be disappointing
11. It was _____ he worked hard that he succeeded.
A. because
B. since
C. as
D. for
12. I have no idea _____.
A. what does the word “infinity” mean
B. what the word “infinity” means
C. what the meaning of the word “infinity”
D. what the word “infinity” mean
13. _____ do you think will teach us maths next term？
A. Whom
B. Who
C. What
D. That
14. Are you sure _____？
A. whether she is honest
B. that she is honesty
C. she is honest
D. is she honest
15. He often thinks of _____ he can do more for the four modernizations.
A. what
B. how
C. that
D. which
答案1. C 2. B 3. D 4. B 5. C 6. B 7. B 8. D 9. A 10. A 11. A 12. B 13. B 14. C 15. B
第 1 页共1 页。
高一英语名词性从句练习题50题
高一英语名词性从句练习题50题1._____ is known to us all is that the earth is round.A.WhatB.AsC.ItD.That答案解析：A。
“What is known to us all”是主语从句，what在从句中作主语。
B 选项“As”引导定语从句；C 选项“It”作形式主语，但题干已有形式主语“is known to us all”，所以C 错误；D 选项“That”引导主语从句时在从句中不充当成分，而此句缺少主语成分，所以 D 错误。
2._____ he will come or not is still unknown.A.WhetherB.IfC.ThatD.When答案解析：A。
“Whether he will come or not”是主语从句，“whether...or not”是固定搭配。
B 选项“If”不能引导主语从句放句首；C 选项“That”引导主语从句无“是否”之意；D 选项“When”在句中意思不符。
3._____ makes this book so special is its vivid descriptions.A.WhatB.ThatC.WhichD.Who答案解析：A。
“What makes this book so special”是主语从句，what 在从句中作主语。
B 选项“That”引导主语从句时在从句中不充当成分；C 选项“Which”有选择之意，在此句中不合适；D 选项“Who”指人，不符合语境。
4._____ caused the accident is being investigated.A.WhatB.WhoC.ThatD.When答案解析：A。
“What caused the accident”是主语从句，what 在从句中作主语。
B 选项“Who”指人，题干未明确是人引起的事故；C 选项“That”引导主语从句时在从句中不充当成分；D 选项“When”指时间，不符合语境。
高中英语名词性从句练习附答案详解
高中英语名词性从句练习(附答案详解Do you know _?A. where does he liveB. where he livesC. where he livedD. where he has lived答案：B解析：此处为宾语从句，要用陈述语序，故选B。
She asked me _.A. what I am doingB. what am I doingC. what I was doingD. what was I doing答案：C解析：此处为宾语从句，要用陈述语序，故选C。
I don't know _.A. how to do itB. how do itC. how doing itD. how did it答案：A解析：此处为宾语从句，要用不定式作宾语，故选A。
He is the man _.A. who I spoke to himB. who I spoke toC. who I spoke with himD. who I spoke with答案：B解析：此处为定语从句，关系代词在从句中作主语，故选B。
The reason why he left _.A. is that he was unhappyB. is because he was unhappyC. was that he was unhappyD. was because he was unhappy答案：A解析：此处为主语从句，要用that引导，故选A。
We don't know _.A. where is he fromB. where he is fromC. from where is heD. from where he is答案：B解析：此处为宾语从句，要用陈述语序，故选B。
She is the girl _.A. who I went to schoolB. who I went to school withC. whom I went to schoolD. whom I went to school with答案：B解析：此处为定语从句，关系代词在从句中作介词with的宾语，故选B。
高一英语名词性从句练习题30题
高一英语名词性从句练习题30题1._____ makes the book so attractive is its vivid description of different cultures.A.WhatB.ThatC.WhichD.Who答案：A。
解析：本题考查主语从句。
“What makes the book so attractive”在句中作主语，what 在主语从句中充当主语成分。
that 在主语从句中不充当成分，没有实际意义；which 表示“哪一个”，在本题中不合适；who 指人，不符合题意。
2._____ is known to all, the earth moves around the sun.A.AsB.ItC.WhatD.That答案：A。
解析：本题考查非限制性定语从句和主语从句的结合。
as is known to all 是固定用法，as 引导非限制性定语从句，指代后面整个句子“the earth moves around the sun”。
it 和that 不能这样用；what 不用于此结构。
3._____ he will come or not is still a question.A.WhetherB.ThatC.WhatD.Who答案：A。
解析：本题考查主语从句。
“Whether he will come or not”在句中作主语，whether 表示“是否”，在主语从句中引导“是否”的情况。
that 在本题中没有这种意思；what 和who 不符合题意。
4._____ surprised me most was his attitude towards the problem.A.WhatB.ThatC.WhichD.Who答案：A。
解析：本题考查主语从句。
“What surprised me most”在句中作主语，what 在主语从句中充当主语成分。
高一英语名词性从句单选题50题(含答案)
高一英语名词性从句单选题50题(含答案)1. I believe ____ he will come back soon.A. thatB. ifC. whetherD. when答案：A。
解析：“I believe that+句子”是固定用法，表示“我相信……”。
选项B“if”表示“是否”“如果”；选项C“whether”也表示“是否”；选项D“when”表示“什么时候”。
在这个句子中，表达的是确定的相信，所以用that。
2. She told me ____ she had finished her homework.A. thatB. ifC. whetherD. what答案：A。
解析：“She told me that+句子”表示“她告诉我……”。
选项B“if”和选项C“whether”用于表示不确定的情况；选项D“what”引导的是宾语从句，要在从句中充当成分，此句不缺成分。
3. We know ____ the earth is round.A. thatB. ifC. whetherD. which答案：A。
解析：“We know that+句子”是常见表达，表示“我们知道……”。
选项B“if”和选项C“whether”不合适，此句是确定的事实；选项D“which”要在从句中有选择的意思，这里不适用。
4. He said ____ he was going to the park.A. thatB. ifC. whetherD. where答案：A。
解析：“He said that+句子”表示“他说……”。
选项B“if”和选项C“whether”在这个语境中不恰当；选项D“where”引导的是地点状语从句，这里不需要。
5. I think ____ it will rain tomorrow.A. thatB. ifC. whetherD. when答案：A。
解析：“I think that+句子”表示“我认为……”。
高中英语名词性从句练习题(附答案)
名词性从句练习100题1.Nowadays consumers become more and more practical and buy only _______ they need.A.whereB.whichC.whenD.what2.She’d like to offer money to ________ needs it to continue his or her study.A.whoB.whomC.whoeverD.whomever3.---If you are admitted to a key university, _________ as a prize--- I’m looking for a cell phone.A.What you expect your father will offer youB.Do you expect what your father will offer youC.What do you expect will your father offer youD.What do you expect your father will offer you4.Yesterday he sold out all his stamps at ____ he thought wasa reasonable price.A.thatB.whichC.whatD.as5.Generally speaking, ____ we have seen seems more believable than ____ we have been told.A.what; thatB.what; whatC.that; whatD.that; that6.After three days’ waiting, there was a little doubt in the mother’s mind _______ the police could find her lost child.A.howB.thatC.whereD.whether7.“Sustainable development” is a question _______ we can continue developing the world without damaging the environment.A.whyB.whenC.thatD.how8.We’d like to do _______ we can _________ the poor.A.how; helpB.all; to helpC.whatever; helpD.however; to help9.My parents used ________they had to get a new car for my brother.A.whichB.all whatC.whatD.不填10.She was so angry at all ________ he was doing _________ shestayed up all night.A.that; thatB.that; whichC.what; thatD.what; as11.After _________ seemed ages, the newsman disclosed the facts.A.thereB.whichC.whatD.that12.Our school is no longer _________ it was 10 years ago, _________ it was not well equipped.A.what; whichB.that; whichC.what; whenD.that; where13.Our bad living habits will destroy the earth.Only by changing ________we live can we save the earth.A.thatB.whatC.howD.where14.Thinking that you know _________ in fact you don’t is a serious mistakeA.whatB.thatC.whenD.however15.Energy is _________ makes things work.A.whatB.everythingC.somethin gD.anything16.One of the men held the view __________the book said was right.A.that whatB.what thatC.thatD.whether17.I think that this meal was well worth ________ was charged for it.A.thatB.whatC.whichD.how many18.Do you think the reason ________ he gave is believableA.for whichB.whichC.whyD.what19.Although he knew little about the large amount of work done in the field, he succeeded ________ other more well-informed experimenters failed.A.whichB.thatC.whatD.where20.Although Anne is happy with her success she wonders________ will happen to her private life.A.itB.thatC.wha tD.this21.The news has spread all over the country ________ the spaceship succeeded in returning to the earth.A.thatB.whichC.whetherD.what22.You can choose ________ book you like among these.A.no matter whatB.whateverC.whoseD.whichever 23.Is this research center ________ we visited the modern equipment last yearA.whereB.thatC.the oneD.which24.Loulan city is not at all _______a traveler who has never seen the desert before can expect.A.whatB.that C .whichD.where25.What the doctor is uncertain about is ______ my mother will recover from the serious disease soon.A.whenB.howC.whetherD.why26.We should buy our daughter a computer in ______ it can help to improve her English.A.whichB.thatC.whatD.whom27.I wish to have a friend with ______ shares my hobbies and interests.A.whomeverB.no matter whoC.whoeverD.anyone28.Why don’t you bring _______ to his attention that you are too busy to do it.A.thisB.whatC.thatD.it29.The task required _______ did it ______ careful and brave enough.A.who; isB.whom; wasC.whomever; wereD.whoever; be30.We wrote a letter of thanks to _______ had helped us.A.whoB.thoseC.whomD.whoever31.--- What are you anxious about--- ___________.A.Whether we can succeedB.If we succeedC.Do you succeedD.That we can succeed32.I just don’t understand_______ that prevents so many Americans from being as happy as one might expect.A .why it does B.what it does C.what it is D.why it is33.---I rang you at about ten, but there was no reply.---Oh, that was probably _________ I was seeing the doctor.A.whenB.whyC.whatD.that34.I kept this picture ________ I can see it every day as it reminds me of my university days.A.inwhich B.where C.whenD.whether35.---I can’t find Mr.Smith .Where did you last see him this morning---It was in the hotel _______ he stayed.A.thatB.whereC.wh ichD.since36.You should keep those old jam bottles ----you never know ______ you might need them.A.whenB.how.C.whatD .where37.---Do you have anything in mind ______you’d like for supper ---Well, ______will do for me.A.which,everything B.that, anythingC.what,whatever D.that, either38.After five hours’ drive, they reached _____ they thought was the place they’d been dreaming of .A.thatB.whatC.whichD.where39.It is recommended that the project ___ until all the preparations have been made.is not started B.not be startedC.will not be startedD.is not to be started40.______ has finished the work ahead of time will be rewarded though we don't know who it will be.A.Those whoB.AnyoneC.WhoeverD.No matter who41.______ makes the school famous is ______ more than 90% of the students have been admitted to universities.A.What; becauseB.That;becauseC.That;what D.What; that42.Everything depends on _____ they will support you about it.A.ifB.whichC.whet herD.that43.After ten years, she changed a lot and looked different from___ she used to be.A.thatB.whomC.whatD.who44.I know nothing about the young lady--- ______ she is from Being.A.exceptB.except forC.except thatD.besides45.The question came up at the meeting _____we had enough money for our research.A.thatB.whatC.whi chD.whether46.__________ a terrible storm would take place in Hainan.A.Word came whichB.Word came thatC.Word that cameD.Wordscame that47._________ David says sounds right to Helen.That’s why she has made up her mind not to leave him________ happens.A.whatever; whateverB.No matter what; whateverC.No matter what; no matter whatD.Whatever; however48.Mr.Hopkins has not yet answered my question________ I can go with him to ________ he calls the Underground Treasure House next week.A.that; whichB.that; whereC.whether; thatD.whether; what49.--- Don’t you believe me--- ________, I will believe _________ you say.A.No; whateverB.Yes; no matter whatC.No; no matter whatD.Yes; whatever50.__________ is mentioned above, the number of the students in senior high school is increasing.A.WhichB.AsC.ThatD.It51.See the flags on top of the building That was ______ we did this morning.A.whenB.whichC.whereD.what52.“What did your parents think about your decision”“They always let me do ______ I think I should.”A.whenB.thatC.howD.what53.“Could you do me a favor”“It depends on ____ it is.”A.whichB.whicheverC.whatD.whatever54.There is much chance ____ Bill will recover from his injury in time for the race.A.thatB.whichC.untilD.if55.______ makes this shop different is that it offers more personal services.A.WhatB.WhoC.WhateverD.Whoever56.Mary wrote an article on _______ the team had failed to win the game.A.whyB.whatC.whoD.that57.The poor young man is ready to accept _______ help he can get.A.whicheverB.howeverC.whateverD.whenever58.As soon as he comes back, I’ll tell him when ______and see him.A.you will comeB.will you comeC.youcome D.do you come59.______ in the regulations that you should not tell other people the password of your e-mail account.A.What is requiredB.What requiresC.It is requiredD.It requires60.Elephants have their own way to tell the shape of an object and _______ it is rough or smooth.A.不填B.whetherC.howD.what61.The way he did it was different _______ we were used to.A.in whichB.in whatC.from whatD.from which62.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; that63.Danby left word with my secretary ________ he would call again in the afternoon.A.whoB.thatC.asD.which64.“Don’t you think it necessary that he _______ to Miami but to New York”“I agree, but the problem is ________ he has refused to.”A.will not be sent; thatB.not be sent; thatC.should not be sent; whatD.should not send; what65.Some researchers believe that there is no doubt ________ a care for AIDS will be found.A.whichB.thatC.whatD.whether66.The old lady’s hand shook frequently.She explained to her doctor ________ this shaking had begun 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; why67.Do you have any idea _______ is actually gong on in the classroomA.thatB.whatC.asD.which68.I want to know ________ the thief was caught on the spot.A.whichB.thatC.whatD.whether69.Our club is open to adults only._______ your children have entered without permission.A.There seems thatB.It seems to beC.There seems to beD.It seems that70.You are saying that everyone should be equal, and this is________ I disagree.A.whyB.whereC.whatD.how71.The road is covered with snow.I can’t understand _______ they insist on going by motorbike.A.whyB.whetherC.whenD.how72.We cannot figure out _______ quite a number of insects, birds, and animals are dying out.A.thatB.asC.whyD.when73.The Foreign Minister said, “_______ our hope that the two sides will work towards peace.”A.This isB.There isC.That isD.It is74.A story goes _______ Elizabeth 1 of England liked nothing more than being surrounded by clever and qualified noblemen at court.A.whenB.whereC.whatD.that75.I have always been honest and straightforward, and it doesn’t matter ____ I’m talking to.A.who is itB.who it isC.it is whoD.it is whom 76.The other day, my brother drove his car down the street at ________ I thought was a dangerous speed.A.asB.whichC.whatD.that77.After Yang Liwei succeeded in circling the earth, ______ our astronauts desire to do is walk in space.A.whereB.whatC.thatD.how78.Along with the letter was his promise _______ he would visit me this coming Christmas.A.whichB.thatC.whatD.whether79.A modern city has been set up in ________ was a wasteland ten years ago.A.whatB.whichC.thatD.where80.I think father would like to know ________ I’ve been up to so far, so I decide to send him a quick note.A.whichB.whyC.whatD.how81.Parents are taught to understand ________ important education is to their children’s future.A.thatB.howC.such D.so82.It is pretty well understood _________ controls the flow of carbon dioxide in and out the atmosphere today.A.thatB.whenC.whatD.how83.---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 excited84.There is a new problem involved in the popularity of private cars _________ road conditions need ________.A.that; to be improvedB.which; to be improvedC.where; improvingD.when; improving85._________ made the school proud was __________ more than 90% of the students had been admitted to key universities.A.What; becauseB.What; thatC.That; whatD.That; because86.There’s a feeling in me _______ we’ll never know what a UFO is –not ever.A.thatB.whichC.of whichD.what87.Perseverance is a kind of quality—and that’s ____ it takes to do anything well.A.whatB.thatC.whichD.why88.---I think it’s going to be a big problem.---Yes, it could be.---I wonder _________ we can do about it.A.ifB.howC.wha tD.that89.__________ fashion differs from country to country may reflect the cultural differences from one aspect.A.WhatB.ThatC.Th isD.Which90.When you answer questions in a job interview, please remember the golden rule: Always give the monkey exactly __________ he wants.A.whatB.whichC.whenD.that91.A computer can only do __________ you have instructed it to do.A.howB.afterC.whatD.whenrmation has been put forward __________ more middle school graduates will be admitted into universities.A.while B that C.when D .as93.I read about it in some book or other.Does it matter ___________ it wasA.where B what C how D.which94.Little Tommy was reluctant to tell the schoolmaster____ he had done the day before.A.that B how C.where D .what 95._________ she couldn’t understand was __________ fewer and fewer students showed interest in her lessons.A.What; whyB.That; whatC.What;because D.Why; that96.Someone is ringing the doorbell.Go and see _________.A.who is heB.who he isC.who is itD.who it is97.These wild flowers are so special I would do __________ I can to save them.A.whateverB.thatC.which D.whichever98.It was a matter of __________ would take the position.A.whoB.whoeverC.whomD.whomever99._________ we’ll go camping tomorrow depends on the weather.A.IfB.WhetherC.Tha tD.Where100.It worried her a bit _________her hair was turning grey.A.whileB.thatC.ifD.for名词性从句练习100题---答案1 DCDCB;10DDBCA11 CCCAA; 20ABBDC 21 ADAAC;30 BCDDD31 ACABB;40 ABBBC41 DCCCD;50 BADDB51 DDCAA;60 ACACB61 CABBB;70 CBDDB71 ACDDB;80 CBBAC81 BCAAB;90 AACBA91 CBDDA; 100 DAABB。
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。
高中英语从句练习题20题含答案解析
高中英语从句练习题20题含答案解析1.She was wondering _______ she could finish the task on time.A.thatB.whetherC.whatD.when答案解析：B。
选项A“that”在名词性从句中无实际意义，此句意思是她在想她是否能按时完成任务，“that”不符合语境；选项B“whether”表示“是否”，符合题意；选项C“what”在句中需充当成分，此句不缺成分，所以“what”不合适；选项D“when”表示“什么时候”，不符合句子整体意思。
2.I don't know _______ he will come or not.A.thatB.whetherC.ifD.when答案解析：B。
选项A“that”在名词性从句中无实际意义，此句需要表示“是否”的词，“that”不合适；选项B“whether”可引导名词性从句表示“是否”，且与“or not”连用，符合题意；选项C“if”也可表示“是否”，但不能与“or not”连用；选项D“when”表示“什么时候”，不符合语境。
3._______ he said at the meeting surprised us all.A.WhatB.ThatC.WhenD.Where答案解析：A。
选项A“What”在句中充当“said”的宾语，表示“他在会议上说的话”，符合题意；选项B“that”在名词性从句中无实际意义，此句缺成分，“that”不合适；选项C“When”表示“什么时候”，不符合句子整体意思；选项D“Where”表示“哪里”，不符合语境。
4.We haven't decided _______ we will go on a trip this weekend.A.thatB.ifC.whetherD.when答案解析：C。
选项A“that”在名词性从句中无实际意义，此句需要表示“是否”的词，“that”不合适；选项B“if”也可表示“是否”，但一般不用于引导主语从句等，此句中引导宾语从句用“whether”更正式；选项C“whether”表示“是否”，符合题意；选项D“when”表示“什么时候”，不符合句子整体意思。
高二英语名词性从句类型单选题80题(答案解析)
高二英语名词性从句类型单选题80题(答案解析)1._____ makes this new technology so attractive is its convenience.A.WhatB.ThatC.WhichD.Who答案：A。
解析：“What makes this new technology so attractive”是主语从句，what 在从句中作主语。
that 在名词性从句中不充当成分，此句缺少主语，所以 B 项错误。
which 表示“哪一个”，在此处不合适，C 项错误。
who 表示“谁”，与句子意思不符，D 项错误。
2._____ is known to all, the earth moves around the sun.A.AsB.ThatC.WhichD.What答案：A。
解析：“As is known to all”是固定用法，as 引导非限制性定语从句，指代后面整个句子。
that 不能引导非限制性定语从句，B 项错误。
which 引导非限制性定语从句时，不能放在句首，C 项错误。
what 不引导定语从句，D 项错误。
3._____ he will come or not is still a question.A.WhetherB.ThatC.IfD.When答案：A。
解析：“Whether he will come or not”是主语从句，whether 表示“是否”，在主语从句、表语从句和同位语从句中只能用whether，不能用if。
that 在名词性从句中不充当成分，此句需要“是否”的意思，B 项错误。
if 不能引导主语从句放在句首，C 项错误。
when 表示“什么时候”，与句子意思不符，D 项错误。
4._____ surprised me most was his attitude towards the problem.A.WhatB.ThatC.WhichD.Who答案：A。
高一英语名词性从句单选题30题及答案
高一英语名词性从句单选题30题及答案1._____ is known to all, the earth is round.A.WhatB.AsC.WhichD.That答案：B。
本题考查定语从句与主语从句的辨析。
as is known to all 是固定搭配，意为“众所周知”，as 引导非限制性定语从句，指代后面整个句子。
what 不能引导非限制性定语从句；which 引导非限制性定语从句时，不能放于句首；that 不能引导非限制性定语从句。
2._____ he will come or not is still unknown.A.WhetherB.IfC.ThatD.What答案：A。
本题考查主语从句。
whether 和if 都可以表示“是否”，但在引导主语从句且后面有or not 时，只能用whether；that 在主语从句中不充当任何成分，无实际意义；what 在主语从句中充当主语、宾语等成分，不符合题意。
3.We don't know _____ he will come tomorrow.A.thatB.whenC.whetherD.where答案：C。
本题考查宾语从句。
我们不知道他明天是否会来，whether 表示“是否”；that 在宾语从句中不充当任何成分，无实际意义，且此处语义不符；when 和where 分别表示时间和地点，不符合题意。
4.Can you tell me _____ you did last weekend?A.whatB.thatC.whichD.how答案：A。
本题考查宾语从句。
你能告诉我你上周末做了什么吗？what 在宾语从句中充当宾语；that 在宾语从句中不充当任何成分，无实际意义，此处语义不符；which 表示“哪一个”，不符合题意；how 表示方式，不符合题意。
5._____ makes this book so special is its vivid description.A.WhatB.ThatC.WhichD.Who答案：A。
高中英语名词性从句引导词辨析练习题30题答案解析版
高中英语名词性从句引导词辨析练习题30题答案解析版1._____ is known to all, the environment is of great importance.A.WhatB.AsC.WhichD.That答案解析：B。
“As is known to all”是固定用法，意为“众所周知”，as引导非限制性定语从句，指代后面整个句子。
A 选项“What is known to all”这种表达错误；C 选项“Which”引导定语从句时要有先行词且一般用于非限制性定语从句时表示选择关系；D 选项“That”不能引导非限制性定语从句。
2.We don't know _____ he will come or not.A.ifB.whetherC.thatD.when答案解析：B。
“whether...or not”是固定搭配，表示“是否”。
A 选项“if”不能与“or not”连用；C 选项“that”在宾语从句中无实际意义，不表示“是否”；D 选项“when”表示时间，不符合语境。
3._____ he said at the meeting surprised us all.A.WhatB.ThatC.WhichD.When答案解析：A。
“what he said”在句子中作主语，“what”在主语从句中作“said”的宾语。
B 选项“That”在主语从句中不充当成分，只起连接作用，此句缺少宾语；C 选项“Which”要有选择范围；D 选项“When”在主语从句中作时间状语，此句不是时间相关的主语从句。
4.Can you tell me _____ you are waiting for?A.thatB.whoC.whomD.when答案解析：B。
此句中“waiting for”缺少宾语，根据语境询问的是人，“who”在宾语从句中作“waiting for”的宾语，且主格形式；C 选项“whom”是宾格形式，但此句需要主格；A 选项“that”在宾语从句中无实际意义，不充当成分；D 选项“When”在宾语从句中作时间状语，不符合语境。