最新主语从句专项练习-(含答案)

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高中英语主语从句用法练习题50题(答案解析)

高中英语主语从句用法练习题50题(答案解析)1. ____ is still unknown whether we can go back to the past through time - traveling.A. ItB. ThatC. WhatD. Which答案解析：A。

在这个句子中，“whether we can go back to the past through time - traveling”是真正的主语从句，为了避免句子头重脚轻，使用it作形式主语，这是it作形式主语的常见用法。

选项B“that”引导主语从句时无实际意义，但在此处不符合句子结构需求。

选项C“what”在主语从句中要充当成分，这里不需要。

选项D“which”表示“哪一个”，不符合句子语境。

2. ____ makes me happy is that I have passed the difficult English exam.A. ItB. ThatC. WhatD. Which答案解析：C。

这里“____ makes me happy”是主语从句，从句中缺少主语，“what”可以在主语从句中充当主语，表示“……的事物”。

选项A“it”作形式主语时，句子结构应为“it + be + 形容词+ that从句”，不符合此句结构。

选项B“that”引导主语从句时在从句中不充当成分，这里从句缺主语，所以不行。

选项D“which”表示在一定范围内的“哪一个”，不适合此语境。

3. ____ is a fact that the earth moves around the sun.A. ItB. ThatC. WhatD. Which答案解析：A。

“that the earth moves around the sun”是真正的主语从句，这里使用it作形式主语，这是典型的it作形式主语的结构，“it + be + 名词+ that从句”。

高中英语主语从句用法练习题50题(答案解析)

高中英语主语从句用法练习题50题(答案解析)1._____ is important for us to protect the environment.A.ThatB.ThisC.ItD.One答案解析：C。

本题考查it 作形式主语的用法。

it 在句中作形式主语，真正的主语是to protect the environment。

A、B、D 选项均不能作形式主语。

2._____ is known to all that the earth is round.A.ThatB.ThisC.ItD.One答案解析：C。

本题考查it 作形式主语的用法。

it 在句中作形式主语，真正的主语是that the earth is round。

A、B、D 选项均不能作形式主语。

3._____ is a pity that he can't come.A.ThatB.ThisC.ItD.One答案解析：C。

本题考查it 作形式主语的用法。

it 在句中作形式主语，真正的主语是that he can't come。

A、B、D 选项均不能作形式主语。

4._____ is necessary to learn English well.A.ThatB.ThisC.ItD.One答案解析：C。

本题考查it 作形式主语的用法。

it 在句中作形式主语，真正的主语是to learn English well。

A、B、D 选项均不能作形式主语。

5._____ is said that he has gone abroad.A.ThatB.ThisC.ItD.One答案解析：C。

本题考查it 作形式主语的用法。

it 在句中作形式主语，真正的主语是that he has gone abroad。

A、B、D 选项均不能作形式主语。

6._____ is reported that a new bridge will be built.A.ThatB.ThisC.ItD.One答案解析：C。

高中英语主语从句练习题20题含答案解析

高中英语主语从句练习题20题含答案解析1._____ he will come or not is still a question.A.ThatB.WhetherC.WhoD.What答案解析：B。

“Whether...or not”是固定搭配，表示“是否”。

A 选项that 在主语从句中不表示“是否”的意思；C 选项who 表示“谁”，不符合语境；D 选项what 表示“什么”，也不符合题意。

2._____ surprised us most was his attitude.A.ThatB.WhetherC.WhoD.What答案解析：D。

what 在主语从句中充当主语，表示“什么”。

A 选项that 在主语从句中无实际意义，只起连接作用；B 选项whether 表示“是否”；C 选项who 表示“谁”，在这里都不符合语境。

3._____ is known to us all is that the earth is round.A.ThatB.WhetherC.WhoD.What答案解析：A。

“That is known to us all”是固定句式，that 在主语从句中无实际意义，只起连接作用。

B 选项whether 表示“是否”；C 选项who 表示“谁”；D 选项what 表示“什么”，在这里都不合适。

4._____ he has done is very important.A.ThatB.WhetherC.WhoD.What答案解析：D。

what 在主语从句中充当宾语，表示“他所做的事情”。

A 选项that 在主语从句中无实际意义，只起连接作用；B 选项whether 表示“是否”；C 选项who 表示“谁”，在这里都不符合语境。

5._____ will win the game is not clear.A.ThatB.WhetherC.WhoD.What答案解析：C。

根据语境，“谁会赢得比赛还不清楚”，who 在主语从句中充当主语，表示“谁”。

初一英语主语从句造句练习题40题答案解析版

初一英语主语从句造句练习题40题答案解析版1. ____ that we should help each other in the class is very important.A. ItB. ThatC. ThisD. He答案：B解析：在这个句子中，“that we should help each other in the class”是主语从句，that在主语从句中不作任何成分，只起连接作用。

整个句子的结构是“主语从句（that we should help each other in the class）+系动词（is）+表语（very important）”。

2. ____ that Tom likes reading books makes his parents happy.A. ItB. WhatC. WhichD. That答案：D解析：“that Tom likes reading books”是主语从句，that起连接作用，无实际意义。

句子结构为“主语从句（（that Tom likes reading books）+谓语（makes）+宾语（his parents）+宾补（happy）”。

3. ____ that we need to do more exercise is a fact.A. ItB. ThatC. ThereD. Those答案：B解析：这里“that we need to do more exercise”是主语从句，that用于引导主语从句，在从句中不充当成分。

句子结构是“主语从句（（that we need to do more exercise）+系动词（is）+表语（a fact）”。

4. ____ that she is good at dancing is known to all.A. ItB. WhatC. ThatD. Which答案：C解析：“that she is good at dancing”为主体的主语从句，that只起连接作用。

高一英语主语从句的用法练习题40题(带答案)

高一英语主语从句的用法练习题40题(带答案)1. ______ made her mother angry was that she didn't pass the exam.A. ItB. WhatC. ThatD. Which答案解析：B。

本题考查主语从句的引导词。

在这个句子中，“______ made her mother angry”是主语从句，这个从句中缺少主语，表示“什么让她妈妈生气”，所以要用what来引导。

选项A的it不能引导主语从句；选项C的that在主语从句中不充当任何成分，只起连接作用，这里从句缺少成分，所以不选；选项D的which表示“哪一个”，不符合句子意思。

2. ______ we will go for a picnic tomorrow depends on the weather.A. IfB. WhetherC. ThatD. Where答案解析：B。

这里考查主语从句的引导词。

“______ we will go for a picnic tomorrow”是主语从句，表示“我们明天是否去野餐”，if不能引导主语从句放在句首，所以A错误；whether有“是否”的意思，可以引导主语从句，B正确；that在主语从句中不充当成分，这里从句需要表达“是否”的意思，C错误；where表示地点，不符合句子意思，D错误。

3. ______ is known to all, China is a developing country.A. ItB. AsC. ThatD. Which答案解析：B。

在这个句子中，“______ is known to all”是主语从句。

as引导的主语从句可以放在句首，有“正如”的意思，这里表示“正如大家所知道的”。

it不能引导这种形式的主语从句，A错误；that引导主语从句时，在句中不充当成分，这里需要有“正如”的意思，C错误；which不能引导这种放在句首表示“正如”意思的主语从句，D错误。

主语从句练习50题

主语从句练习50题1. ______ makes me happy is reading books.A. WhatB. ThatC. WhetherD. How答案：A。

本题考查主语从句的引导词。

“What”在从句中充当主语，表示“什么”；“That”在主语从句中不充当成分，且没有实际意义，放在此处句子意思不完整；“Whether”表示“是否”，不符合句子意思；“How”表示“如何”，也不符合句子意思。

所以选择A 选项。

2. ______ he will come or not is still unknown.A. WhatB. ThatC. WhetherD. How答案：C。

“Whether...or not”是固定搭配，表示“是否”；“What”“That”“How”都不能与“or not”这样搭配，所以选择C 选项。

3. It is not clear ______ he did it.A. whatB. thatC. whetherD. how答案：C。

句子意思是“不清楚他是否做了这件事”，“Whether”表示“是否”，符合句子语境；“What”在从句中充当成分，此处不缺成分；“That”在主语从句中不充当成分，且没有实际意义，放在此处句子不通顺；“How”表示“如何”，不符合句子意思。

因此选择C 选项。

4. ______ is important for us to learn English well.A. WhatB. ThatC. WhetherD. How答案：B。

“That”引导的主语从句，“That”在从句中不充当成分，且没有实际意义，此处只是单纯陈述“学好英语对我们很重要”这个事实；“What”“Whether”“How”在句子中意思不符合，所以选择B 选项。

5. ______ we need is more time.A. WhatB. ThatC. WhetherD. How答案：A。

主语从句60题(最新整理)

1.______Li Bai,a great Chinese poet,was born is known to the public,but some won’t accept it.A.ThatB.WhyC.WhereD.How[答案] 1.C[解析] 1.句意:李白,中国伟大的诗人,出生在什么地方人人皆知,但是有些人对此并不接受。

本题考查主语从句。

“______Li Bai,a great Chinese poet,was born”为主语从句,该从句缺少状语,结合选项可知答案应为C。

2.If you swim in a river or lake,be sure to investigate______is below the water surface.Often there are rocks or branches hidden in the water.A.whatB.whoC.thatD.whoever[答案] 2.A[解析] 2.句意:如果你在河里或湖里游泳,一定要查明水下的状况。

经常会有岩石或树枝隐藏在水中。

本题考查名词性从句。

动词investigate后的宾语从句中缺少主语,同时主语为物,故排除B、C、D三项。

根据句意可知选A。

3.______we understand things has a lot to do with what we feel.A.WhereB.HowC.WhyD.When[答案] 3.B[解析] 3.句意:我们怎样理解事物与我们的认知有很大关系。

本题考查名词性从句。

A项在从句中作地点状语;B项在从句中作方式状语,意为“如何”;C项意为“为什么”;D项意为“什么时候”。

故选B项。

4.I truly believe______beauty comes from within.A.thatB.whereC.whatD.why[答案] 4.A[解析] 4.句意:我确信美丽源自内心。

初一英语主语从句引导词练习题20题(答案解析)

初一英语主语从句引导词练习题20题(答案解析)1._____ he will come or not is still unknown.A.ThatB.WhetherC.WhatD.Who答案解析：B。

“Whether he will come or not”是主语从句，“whether...or not”是固定搭配，表示“是否”。

A 选项“that”在主语从句中无“是否”之意；C 选项“what”表示“什么”，不符合语境；D 选项“who”表示“谁”，也不符合题意。

2._____ she is happy is important to us.A.ThatB.WhetherC.WhatD.Who答案解析：A。

“That she is happy”是主语从句，“that”在主语从句中只起连接作用，无实际意义，且不充当任何成分。

B 选项“whether”表示“是否”，此处不需要；C 选项“what”表示“什么”，不符合语境；D 选项“who”表示“谁”，也不符合题意。

3._____ he can finish the work on time is a question.A.ThatB.WhetherC.WhatD.Who答案解析：B。

“Whether he can finish the work on time”是主语从句，“whether”表示“是否”，符合语境。

A 选项“that”在主语从句中无“是否”之意；C 选项“what”表示“什么”，不符合语境；D 选项“who”表示“谁”，也不符合题意。

4._____ they will go to the park depends on the weather.A.ThatB.WhetherC.WhatD.Who答案解析：B。

“Whether they will go to the park”是主语从句，“whether”表示“是否”，此处表示他们是否去公园取决于天气。

主语从句练习题及答案

主语从句练习题及答案一、主语从句练习题1. ______ is not known is whether the meeting will be held tomorrow.A. IfB. WhatC. ThatD. Which2. ______ she said surprised me a lot.A. WhatB. WhetherC. ThatD. Which3. ______ is certain is that he will stay in Paris for a year.A. WhatB. WhetherC. ThatD. Which4. ______ studying abroad is expensive, many students still choose to do so.A. WhatB. IfC. ThatD. Which5. ______ made her angry was his rude behavior.A. WhatB. WhetherC. ThatD. Which二、主语从句练习题答案1. B. What2. A. What3. C. That4. A. What5. C. That三、文章练习题主语从句是句子中的一个句子成分，用来作为句子的主语，它常常以连接代词或连接副词的形式出现。

在句子中，主语从句常常起到引导词，引导句子的作用。

以下是几个关于主语从句的练习题。

练习题1：______ is not known is whether the meeting will be held tomorrow.练习题2：______ she said surprised me a lot.练习题3：______ is certain is that he will stay in Paris for a year.练习题4：______ studying abroad is expensive, many students still choose to do so.练习题5：______ made her angry was his rude behavior.答案：1. B. What2. A. What3. C. That4. A. What5. C. That通过以上练习题，我们可以锻炼和巩固对主语从句的理解和应用能力。

高中英语主语从句练习题20题(答案解析)

高中英语主语从句练习题20题(答案解析)1._____ is known to all that the earth is round.A.ThatB.ItC.AsD.What答案解析：B。

“It is known to all that...”是固定句型，it 作形式主语，真正的主语是that 引导的从句。

A 选项that 不能直接放在句首作形式主语；C 选项as 引导的非限制性定语从句通常放在句首，语义不符；D 选项what 引导主语从句时不能用在这个句型中。

2._____ is important for us to learn English well.A.ThatB.ItC.ThisD.One答案解析：B。

“It is important for sb to do sth”是固定句型，it 作形式主语，真正的主语是动词不定式to learn English well。

A 选项that 无此用法；C 选项this 不能作形式主语；D 选项one 也不能作形式主语。

3._____ seems impossible that he can finish the task in such a short time.A.ThatB.ItC.ThisD.He答案解析：B。

“It seems impossible that...”是固定句型，it 作形式主语，真正的主语是that 引导的从句。

A 选项that 不能作形式主语；C 选项this 不能作形式主语；D 选项he 不是形式主语的正确用法。

4._____ is a pity that you missed the concert.A.ThatB.ItC.ThisD.What答案解析：B。

“It is a pity that...”是固定句型，it 作形式主语，真正的主语是that 引导的从句。

A 选项that 不能作形式主语；C 选项this 不能作形式主语；D 选项what 引导主语从句时不能用在这个句型中。

高中英语主语从句用法练习题50题答案解析

高中英语主语从句用法练习题50题答案解析1._____ he will come to the party is still uncertain.A.ThatB.WhetherC.WhatD.When答案解析：B。

“他是否会来参加派对还不确定。

”A 选项that 在主语从句中不翻译，无实际意义，在此处不合适；C 选项what 在主语从句中充当主语、宾语等成分，这里不需要这个意思；D 选项when 表示时间，与句子意思不符。

B 选项whether 表示“是否”，符合题意。

2._____ she has won the first prize surprises us all.A.ThatB.WhetherC.WhatD.When答案解析：A。

“她赢得了一等奖这件事让我们所有人都很惊讶。

”that 在主语从句中不翻译，无实际意义，此处引导主语从句符合语法规则。

B 选项whether 表示“是否”，不符合句子意思；C 选项what 在主语从句中充当主语、宾语等成分，这里不需要这个意思；D 选项when 表示时间，与句子意思不符。

3._____ we should do next is a difficult decision.A.ThatB.WhetherC.What答案解析：C。

“我们下一步应该做什么是一个艰难的决定。

”what 在主语从句中充当do 的宾语，符合语法规则。

A 选项that 在主语从句中不翻译，无实际意义，此处不合适；B 选项whether 表示“是否”，不符合句子意思；D 选项when 表示时间，与句子意思不符。

4._____ he can finish the work on time is important.A.ThatB.WhetherC.WhatD.When答案解析：B。

“他是否能按时完成工作很重要。

”whether 表示“是否”，符合题意。

A 选项that 在主语从句中不翻译，无实际意义，此处不合适；C 选项what 在主语从句中充当主语、宾语等成分，这里不需要这个意思；D 选项when 表示时间，与句子意思不符。

主语从句专项练习-(含答案)完整

主语从句专项练习-(含答案) (可以直接使用，可编辑优秀版资料，欢迎下载）主语从句专项练习(含答案)1.________ makes mistakes must correct them.A. WhatB. ThatC. WhoeverD. Whatever2. It worried her a bit ____ her hair was turning grey.A. whileB. thatC. ifD. for3.When and why he came here ________ yet.A. is not knownB. are not knownC. has not knownD. have not known4. ________ is no reason for dismissing her.A. Because she was a few minutes lateB. Owing to a few minutes lateC. The fact that she was a few minutes lateD. Being a few minutes late5. ________ 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 expected6.________ we go swimming every day ________ us a lot of good.A. If...doB. That...doC. If...doesD. That...does7.It ________ Bob drives badly.A. thinks thatB. is thought whatC. thought thatD. is thought that8.It's uncertain ________ the experiment is worth doing.A. ifB. thatC. whetherD. how9.________ the boy didn't take medicine made his mother angry.A. ThatB. WhatC. HowD. Which10.____ we can't get seems better than ____ we have.A. What, whatB. What, thatC. That, thatD. That, what11.____ you don't like him is none of my business.A. WhatB. WhoC. ThatD. Whether12..____ we'll go camping tomorrow depends on the weather.A. IfB. WhetherC. ThatD. Where13._________is going to do the job will be decided by the Party committee.A. ThatB. WhyC. HowD. Who14._______we'll finish translating the book depends on the time.A. WhenB. WhyC. WhatD. That15.______he won't go there is clear to all of us.A. HowB. WhatC. WhyD. This16.______the house will be built will be discussed at tomorrow's meeting.A. IfB. WhereC. ThatD. What17. ._______you come or not is up to you.A. WhatB. IfC. WhyD. Whether18..Is _______true that the famous scientist will give us a lecture next week.A. thatB. itC. isD. he19.._______team will win the match is a matter of public concern.A. WhichB. ThatC. IfD. How20..________leaves the room last ought to turn off the lights.A. AnyoneB. The personC. WhoeverD. Who21. ________he really means is________ he disagrees with us.A. What, whatB. What, thatC. That, thatD. That, what22.It has not been decided ________they will leave for Beijing.A. whenB. thatC. whatD. why23.____he will go to work in a mountain village surprises all of us.A. WhatB. ThatC. WhetherD. If24. ____you don’t like him is none of my business.A. WhatB. ThatC. WhoD. How25.____all the inventions have in common is ____they have succeeded.A. What; whatB. That; thatC. what; thatD. That ; what26. ____appeared to me that he enjoyed the food very much.A. WhatB. ItC. All thatD. That27. It is widely ______that smoking can cause cancer.A. believedB. thinkC. sayD. hoped28. ____caused the accident is still a complete mystery.A. WhatB. ThatC. HowD. Where 29．____he does has nothing to do with me.A. whateverB. No matter whatC. ThatD. If30. It was he said disappointed me.A.what ;thatB.that; thatC.what;whatD.that;what用正确的代词或介词填空____he will come to attend the meeting won’t make any difference.____I couldn’t understand was why he didn’t attend the meeting.____we will hold the meeting hasn’t been decided yet. ____leaves the room last ought to turn off the light.____ suddenly occurred to me that I had left my keys at home.[参考答案] 1-10 CBACD DDCAA 11-20 CBDACBDBAC21-30 BABBCBAA语法专项讲解及练习现在完成时（一）含义现在完成时用来表示现在之前已发生或完成的动作或状态，但其结果却和现在有联系, 也就是说, 动作或状态发生在过去但它的影响现在还存在。

高中英语主语从句练习题20题含答案解析

高中英语主语从句练习题20题含答案解析1. It is important that we protect the environment.A. thatB. whatC. whichD. when答案解析：A。

本题考查主语从句中it 作形式主语的用法。

“It is important that...”是固定句型，其中that 引导的主语从句后置，it 作形式主语。

选项B“what”引导名词性从句时在从句中要充当成分；选项C“which”通常引导定语从句；选项D“when”引导时间状语从句。

2. It is known to all that the earth is round.A. thatB. whatC. whichD. who答案解析：A。

“It is known to all that...”是固定句型，that 引导主语从句后置，it 作形式主语。

选项B“what”在从句中需充当成分；选项C“which”通常引导定语从句；选项D“who”通常指人，在本题中不适用。

3. It is a pity that he missed the concert.A. thatB. whatD. when答案解析：A。

“It is a pity that...”是固定句型，that 引导主语从句后置，it 作形式主语。

选项B“what”在从句中需充当成分；选项C“which”通常引导定语从句；选项D“when”引导时间状语从句。

4. It seems that he is very busy.A. thatB. whatC. whichD. when答案解析：A。

“It seems that...”是固定句型，that 引导主语从句后置，it 作形式主语。

选项B“what”在从句中需充当成分；选项C“which”通常引导定语从句；选项D“when”引导时间状语从句。

5. It is reported that a new bridge will be built next year.A. thatB. whatC. whichD. when答案解析：A。

八年级英语主语从句练习题50题含答案解析

八年级英语主语从句练习题50题含答案解析1._____ he will come on time is still uncertain.A.ThatB.WhetherC.WhenD.Where答案解析：B。

“Whether he will come on time”是主语从句，在这个句子中，“是否他能准时来还不确定”，这里不能用that，因为that 在主语从句中不表示“是否”的意思；when 和where 也不符合语境，这里强调的是“是否”。

2._____ she said made us very happy.A.ThatB.WhatC.WhichD.Who答案解析：A。

“That she said”是主语从句，that 在主语从句中只起连接作用，没有实际意义，“她所说的话让我们很高兴”，what、which 和who 在这里不符合语境。

3._____ they will win the game is hard to say.A.ThatB.WhetherC.When答案解析：B。

“Whether they will win the game”是主语从句，“他们是否会赢得比赛很难说”，that 在这里不合适，因为不是陈述一个确定的事实；when 和where 也不符合语境。

4._____ he is coming back tomorrow is good news.A.ThatB.WhetherC.WhenD.Where答案解析：A。

“That he is coming back tomorrow”是主语从句，that 在主语从句中只起连接作用，没有实际意义，“他明天回来是个好消息”，whether、when 和where 不符合语境。

5._____ she can finish the work on time is important.A.ThatB.WhetherC.WhenD.Where答案解析：B。

高中英语主语从句用法练习题40题(带答案)

高中英语主语从句用法练习题40题(带答案)1._____ he will come to the party is still uncertain.A.ThatB.WhetherC.WhatD.When答案解析：B。

“他是否会来参加派对还不确定”。

A 选项that 在主语从句中无实际意义，只起连接作用，但此处表达不确定，that 不合适；C 选项what 表示“什么”，不符合题意；D 选项when 表示“什么时候”，也不符合不确定的语境。

而whether 表示“是否”，符合题意。

2._____ she can finish the task on time is a question.A.ThatB.WhetherC.WhatD.Who答案解析：B。

“她是否能按时完成任务是个问题”。

A 选项that 在主语从句中无实际意义，只起连接作用，但此处需要表达不确定，that 不合适；C 选项what 表示“什么”，不符合题意；D 选项who 表示“谁”，也不符合题意。

whether 表示“是否”，符合语境。

3._____ is known to all is that the earth is round.A.ThatB.WhetherC.WhatD.As答案解析：A。

“众所周知，地球是圆的”。

what 引导主语从句时在从句中要充当成分，此处不适合；whether 表示“是否”，不符合题意；as 引导非限制性定语从句，也不符合；that 引导主语从句，在从句中无实际意义，只起连接作用，符合题意。

4._____ we need is more time.A.ThatB.WhetherC.WhatD.Who答案解析：C。

“我们需要的是更多时间”。

that 在主语从句中无实际意义，只起连接作用，此处不合适；whether 表示“是否”，不符合题意；who 表示“谁”，不符合语境。

what 引导主语从句且在从句中充当need 的宾语，符合题意。

高中英语主语从句用法练习题40题含答案解析

高中英语主语从句用法练习题40题含答案解析1._____ he will come to the party is still uncertain.A.ThatB.WhetherC.WhatD.Who答案解析：B。

“Whether he will come to the party”是主语从句，在这个句子中“whether”表示“是否”，整个主语从句的意思是“他是否会来参加聚会”。

“that”引导主语从句时在从句中不充当任何成分，只起连接作用，且没有实际意义，此句中意思不符。

“what”在主语从句中要充当成分，此句不缺成分。

“who”在主语从句中表示“谁”，此句不是问谁会来参加聚会。

2._____ she won the first prize surprised all of us.A.ThatB.WhetherC.WhatD.When答案解析：A。

“That she won the first prize”是主语从句，“that”在从句中不充当任何成分，只起连接作用，此句中“她赢得一等奖这件事让我们所有人都很惊讶”，用“that”符合语法规则。

“whether”表示“是否”，不符合句意。

“what”在主语从句中要充当成分，此句不缺成分。

“when”表示“什么时候”，不符合句意。

3._____ is important is that we should study hard.A.ThatB.WhetherC.WhatD.Who答案解析：C。

“What is important”是主语从句，“what”在从句中充当主语，表示“重要的事情”。

“that”在主语从句中不充当成分，此句缺主语。

“whether”表示“是否”，不符合句意。

“who”表示“谁”，不符合句意。

4._____ he said at the meeting was very important.A.ThatB.WhetherC.WhatD.Who答案解析：C。

高中英语主语从句用法练习题50题含答案解析

高中英语主语从句用法练习题50题含答案解析1._____ he will come or not is still uncertain.A.ThatB.WhetherC.IfD.When答案解析：B。

“Whether...or not”是固定搭配，表示“是否”。

A 选项that 在主语从句中无实际意义，只起连接作用，且不能与or not 连用；C 选项if 也表示“是否”，但不能与or not 连用；D 选项when 表示“什么时候”，不符合语境。

2._____ she won the first prize surprised us all.A.ThatB.WhetherC.IfD.What答案解析：A。

此句中“she won the first prize”是一个完整的句子，不缺任何成分，用that 引导主语从句，只起连接作用，无实际意义。

B 选项whether 表示“是否”；C 选项if 表示“是否”；D 选项what 在主语从句中要充当成分，而此句不缺成分。

3._____ is important is that we should study hard.A.ThatB.WhetherC.WhatD.Who答案解析：C。

此句中“is important”缺少主语，用what 引导主语从句并在从句中作主语。

A 选项that 在主语从句中无实际意义，只起连接作用；B 选项whether 表示“是否”；D 选项who 表示“谁”，不符合语境。

4._____ he can finish the work on time is a problem.A.ThatB.WhetherC.IfD.When答案解析：B。

此句中“he can finish the work on time”不缺成分，但需要表示“是否”的引导词，whether 和if 都有“是否”之意，但if 不能引导主语从句，所以用whether。

主语从句专项练习（含答案）

主语从句专项练习(含答案) 1.________ makes mistakes must correct them. A. What B. That C. Whoever D. Whatever 2. It worried her a bit ____ her hair was turning grey. A. while B. that C. if D. for 3.When and why he came here ________ yet. A. is not known B. are not known C. has not known D. have not known 4. ________ is no reason for dismissing her. A. Because she was a few minutes late B. Owing to a few minutes late C. The fact that she was a few minutes late D. Being a few minutes late 5. ________ Tom liked to eat was different from ________. A. That…that you had expected B. What …that you had expectedC. That…what you had expected D. What…what you had expected6.________ we go swimming every day ________ us a lot of good. A. If...do B. That...do C. If...does D. That...does 7.It ________ Bob drives badly. A. thinks that B. is thought what C. thought that D. is thought that 8.It's uncertain ________ the experiment is worth doing. A. if B. that C. whether D. how 9.________ the boy didn't take medicine made his mother angry. A. That B. What C. How D. Which 10.____ we can't get seems better than ____ we have. A. What, what B. What, that C. That, that D. That, what 11.____ you don't like him is none of my business. A. What B. Who C. That D. Whether 12..____ we'll go camping tomorrow depends on the weather. A. If B. Whether C. That D. Where 13._________is going to do the job will be decided by the Party committee. A. That B. Why C. How D. Who 14._______we'll finish translating the book depends on the time. A. When B. Why C. What D. That 15.______he won't go there is clear to all of us. A. How B. What C. Why D. This 16.______the house will be built will be discussed at tomorrow's meeting. A. If B. Where C. That D. What 17. ._______you come or not is up to you. A. What B. If C. Why D. Whether 18..Is _______true that the famous scientist will give us a lecture next week. A. that B. it C. is D. he 19.._______team will win the match is a matter of public concern. A. Which B. That C. If D. How 20..________leaves the room last ought to turn off the lights. A. Anyone B. The person C. Whoever D. Who 21. ________he really means is________ he disagrees with us. A. What, what B. What, that C. That, that D. That, what 22.It has not been decided ________they will leave for Beijing. A. when B. that C. what D. why 23.____he will go to work in a mountain village surprises all of us. A. What B. That C. Whether D. If . ____you don’t like him is none of my business.2424. ____you don’t like him is none of my business.A. What B. That C. Who D. How 25.____all the inventions have in common is ____they have succeeded. A. What; what B. That; that C. what; that D. That ; what 26. ____appeared to me that he enjoyed the food very much. A. What B. It C. All that D. That 27. It is widely ______that smoking can cause cancer. 30. It was he said disappointed me. [参考答案] 1-10 CBACD DDCAA 11-20 CBDAC BDBAC 21-30 BABBCBAA。

高中英语主语从句用法练习题50题含答案解析

高中英语主语从句用法练习题50题含答案解析1._____ makes a person great is not wealth but inner qualities.A.WhatB.WhichC.WhoD.That答案解析：A。

“What makes a person great”在句中作主语，what 在主语从句中充当主语，表示“什么”。

which 表示“哪一个”，在有范围的情况下使用；who 表示“谁”；that 在主语从句中不充当成分，只起连接作用，本句缺少主语，所以选A。

2._____ he will come or not is still uncertain.A.WhetherB.IfC.ThatD.When答案解析：A。

“Whether he will come or not”在句中作主语，whether 和if 都可以表示“是否”，但是在引导主语从句且后面有or not 的时候只能用whether；that 在主语从句中不充当成分，只起连接作用；when 表示“什么时候”，不符合句意，所以选A。

3._____ 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”在句中作主语，what 在主语从句中充当主语，表示“……的事情”。

as 引导非限制性定语从句；it 不能引导主语从句；that 在本句中引导主语从句后置的表语从句，在主语从句中不充当成分，只起连接作用，本句缺少主语，所以选A。

4._____ we need is more time.A.WhatB.ThatC.WhichD.Who答案解析：A。

“What we need”在句中作主语，what 在主语从句中充当宾语，表示“我们需要的东西”。

that 在主语从句中不充当成分，只起连接作用；which 表示“哪一个”，在有范围的情况下使用；who 表示“谁”，不符合句意，所以选A。

高中英语主语从句练习题20题答案解析版

高中英语主语从句练习题20题答案解析版1._____ he will come or not is still uncertain.A.ThatB.WhetherC.WhoD.What答案解析：B。

“Whether...or not”是固定搭配，在主语从句中表示“是否”。

A 选项that 在主语从句中无实际意义，只起连接作用，不符合题意；C 选项who 表示“谁”，题干不是在问“谁会来”；D 选项what 表示“什么”，与题干意思不符。

2._____ wins the game will get a prize.A.WhoeverB.WhoC.WhomeverD.Whom答案解析：B。

本句意思是谁赢得比赛将会得到奖品。

A 选项whoever 表示“无论谁”，语气比who 更强；C 选项whomever 是宾格形式，在句中不能作主语；D 选项whom 也是宾格形式。

所以选B。

3._____ she said made me angry.A.ThatB.WhatC.WhichD.When答案解析：B。

本句意思是她所说的话让我生气。

A 选项that 在主语从句中无实际意义，只起连接作用，不符合题意；C 选项which 表示“哪一个”，不符合语境；D 选项when 表示“什么时候”，与题干意思不符。

所以选B。

4._____ is important is that we should study hard.A.ThatB.WhatC.WhichD.When答案解析：B。

本句意思是重要的是我们应该努力学习。

所以选B。

5.It is not clear _____ he will come.A.thatB.whetherC.whoD.what答案解析：B。