名词性从句包括主语从句、宾语从句、同位语从句和表语从句。考查的要点主要是连接代词和副词的正确使用，主语、谓语的语序，双重连接词以及特殊句型的使用等。其考点主要包括：
1．考查名词性从句的连接词。如：有词义的连接代词who, whose, whom, what, which; 连接副词when, where, why, how; 从属连词that, whether, if, as if; 无词义的that在从句中不担任成分，有时可省略。
2．考查名词性从句的语序和时态。
3．考查it作形式主语、形式宾语的情况。如：
(1)It＋be＋形容词(necessary, important, obvious等)＋that从句．
(2)It＋be＋过去分词＋that从句．
(3)It＋be＋名词(a surprise, a fact, a shame, an honour等)＋that从句．
(4)It＋不及物动词(appear, happen等)＋that从句．
4．名词性从句中的虚拟语气。如：
(1)It is (was)＋ essential (important, natural…) ＋that…；
(2)It is (was) suggested (demanded, wished, desired…)that…等。
5．what引导名词性从句时的语义功能和语法功能。如：what＝the thing that/anything that…； what＝the place that…； what＝the time that…； what＝the person that…等。
6．whoever，whatever，whichever引导名词性从句时的语义功能和语法功能。
一、几种易混的从句的辨别
定语从句、名词性从句和状语从句有时候在形式上很相似，下面提供一些区分的方法：
1．定语从句与同位语从句
定语从句与前面的名词是修饰与被修饰的关系；而同位语从句是用来说明前面名词的内容的。that在定语从句中充当句子成分，可指物或人；而同位语从句中的that在从句中不充当任何句子成分，只起连接作用。请比较：
(1)The news (that/which) he told us was exciting.
(定语从句，that/which在从句中作宾语，还可以被省略)
(2)The news that our team has won is exciting.
(同位语从句，that从句是说明news的内容的，that在从句中不作任何成分，但不能被省略)
辨析
判断是定语从句还是同位语从句可以用“加词”的方法，即在名词和从句之间加入一个be动词，如果句子意思成立，则是同位语从句，否则，则是定语从句。如上面第二句，加上be动词后：
The news is that our team has won.句子意思成立，所以是同位语从句。而第一句，加上be动词后：
The news is that he told us.意思不成立，因此不是同位语从句。
【特别提醒】
一般情况下，同位语从句紧跟在它所说明的名词的后面，可是有的时候，为了表达的需要，名词与从句之间被另外一些内容分隔开了，叫做“分隔同位语从句”。对于这类同位语从句，一定要根据句意，找准它所说明的名词。
2．定语从句与状语从句
请看两组句子：
第一组：区分such...as...和such...that...
(1)The new storybook is written in such easy English as beginners can understand.
(2)The new storybook is written in such easy English that beginners can understand it.
这两句话只有一词之差，但语法结构大相径庭：第一句是as引导的定语从句，as相当于that/which(但不能用that/which)，在从句中作understand的宾语。第二句是结果状语从句，that在从句中不作成分。
结论：当从句缺少句子成分时，用such...as...；当从句不缺少句子成分时，用such...that...。
第二组：选用in which, where填空
(1)He left the key ______ he had been an hour before.
(2)He left the place ______ he lived for many years.
分析：第一句只能填where, where引导的是地点状语从句，修饰主句中的谓语动词。此处where不可换成in which，因为in which只能引导定语从句，本句中根本就没有先行词(后面的从句不是修饰key的)。
第二句填where或in which。根据句意可知，后面的句子是对名词place的修饰，因此此句是定语从句。
二、that与what的区别
that引导名词性从句，在从句中不作任何成分，that本身无意义，只起连接作用。what引导名词性从句时，在从句中可以作主语、宾语、表语等，what表示“……的东西或事情”。请比较：
What I need is more time.(what引导主语从句，在从句中作宾语)
That I need more time to do the work is very clear.(that引导主语从句，在从句中不作任何成分)
The village is no longer what it used to be.(what引导表语从句，在从句中作表语)
I had no idea what we should do next.(what引导同位语从句，在从句中作宾语)
He will tell us what he saw in London.(what引导宾语从句，在从句中作宾语)
精析
名词性从句中区分that与what的关键是：分析句子结构，看从句是否缺少句子成分。如果不缺成分，就用that，如果缺少句子成分(主语、宾语、表语等)，且表示“……的东西或事情”就用what。
三、who, whoever与no matter who的区别
引导名词性从句，在句中作主语时用who，意思是“谁”，含有疑问意味，whoever意为“无论谁”，不含有疑问意味。whoever在引导名词性从句时，相当于anyone who，其中who引导一个定语从句紧随其后。
另外，whoever还可以引导让步状语从句，这时whoever相当于no matter who，但是no matter who只能引导让步状语从句。请比较：
1．Who has taken away my bag is unknown.
谁拿走了我的包还不知道。(若用whoever显然句意不通)
2．Whoever breaks the law will be punished.
无论谁违反法律都要受到惩罚。(whoever表达的语气强烈)
3．I'm not going to let you in, no matter who you are.
＝I'm not going to let you in, whoever you are.
(根据句意“我不会让你进去的，不管你是谁”，后面是一个让步状语从句，故用no matter who或者whoever)
【特别提醒】
wh－ever既可引导名词性从句，又可引导让步状语从句。引导名词性从句时，whoever＝anyone who; whomever＝any-one whom; whatever＝anything that; whichever＝anything/anyone that; whosever＝any one whose。
Whichever he likes will be given to him.＝Anything that he likes will be given to him.
无论他想要哪个都可以给他。
You should give the book back to whosever name(＝anyone whose name) is on the cover of it.
你该把书还给任何一个他的名字在封面上的人。
【方法技巧】
做题时，具体思路如下：①通读全句，首先考虑是不是某种句型，如强调句型；②题干句若是疑问句，首先把它恢复为正常语序；③观察设空的前前后后，确定相关从句的性质；④确定从句性质后，回忆相关从句的用法特点，从而作出取舍；⑤注意标点符号和并列连词(and, but)的作用；⑥将选项代入句子，看前后是否语意贯通。
考点一、考查宾语、表语从句
例1. (2017·江苏) We choose this hotel because the price for a night here is down to $20, half of ____________ it used to charge.
A. that B. which C. what D. how
【答案】C
【解析】考查宾语从句。＂half of _________ it used to charge＂是$20的同位语，即原来价格的一半是现在的$20；另外，of后跟名词或名词短语构成介宾短语，所以，这里是宾语从句；宾语从句中的charge后面缺少宾语，所以用what来引导宾语从句，并充当宾语从句的宾语，故选C。
【2016·北京】29. The most pleasant thing of the rainy season is ________ one can be entirely free from dust.
A. what B. that C. whether D. why
【答案】B
【考点】考查表语从句
【变式探究】 (2015·湖南，26)You have to know you're going if you are to plan the best way of getting there.
【解析】句意：如果你要计划到达某地的最佳路线，你必须首先知道你想要去哪？where引导宾语从句，在从句中用作地点状语。
【答案】where
考点二、考查主语从句
例2．【2016·北京】24.Your support is important to our work. ________ you can do helps.
A. However B. Whoever C. Whatever D. Wherever
【答案】C
【解析】题目考查主语从句。helps是谓语，“________ you can do”是主语部分，即主语从句，在主语从句中，do后缺少宾语，表示“任何事情”，因此用whatever引导，故选C。
【考点】考查主语从句
【变式探究】【2015·北京】33.I truly believe ______beauty comes from within.
A. that B. where C. what D. why
【答案】A
【解析】句意：我很相信美丽源自于内心! 本题考查宾语从句。从句部分不缺少任何成分，因此用that起到连接作用，也可以省略。从句部分不缺少任何成分，因此用that起到连接作用，也可以省略。故选A。
考点三、考查同位语从句
例3. 【2016·天津】11. The manager put forward a suggestion ____ we should have an assistant. There is too much work to do.
A. whether B. that C. which D. what
【答案】B
【考点】考查同位语从句。
【变式探究】—Is it true that Mike refused an offer from Yale University yesterday?
—Yeah, but I have no idea ________ he did it; that's one of his favorite universities.
【答案】why
【解析】本题考查同位语从句的引导词。句意：“昨天迈克拒绝了耶鲁大学的录取，这是真的吗？”“是的，但是我不知道他为什么这样做；那是他最喜欢的大学之一。”idea后接同位语从句，表示某个想法的具体内容。根据that's one of his favorite universities(那是他最喜欢的大学之一)可知，“我”不知道他拒绝耶鲁大学的原因(why)。
1．(2017·江苏) We choose this hotel because the price for a night here is down to $20, half of ____________ it used to charge.
A. that B. which C. what D. how
【答案】C
【解析】考查宾语从句。＂half of _________ it used to charge＂是$20的同位语，即原来价格的一半是现在的$20；另外，of后跟名词或名词短语构成介宾短语，所以，这里是宾语从句；宾语从句中的charge后面缺少宾语，所以用what来引导宾语从句，并充当宾语从句的宾语，故选C。
2．（2017·江苏卷）He hurried home, never once looking back to see if he __________.
A. was being followed B. was following
C. had been followed D. followed
【答案】A
【解析】分析句子成分可知，he和follow是被动关系，即他被别人跟踪，排除B、D；根据句意＂在匆忙赶回家的路上，他从未回头看是否正被跟踪＂，故用过去进行时最合适，故选A。
3．（2017江苏） 27. He hurried home, never once looking back to see if he ____________.
A. was being followed B. was following
C. had been followed D. followed
【答案】A
【解析】根据句子成分可知，He和follow是被动关系，排除B、D。根据句意：在匆忙赶回家的路上，他从未回头看是否被跟踪，用过去进行时最合适，答案选A。
【2016·北京】24.Your support is important to our work. ________ you can do helps.
A. However B. Whoever C. Whatever D. Wherever
【答案】C
【考点】考查主语从句
【2016·北京】29. The most pleasant thing of the rainy season is ________ one can be entirely free from dust.
A. what B. that C. whether D. why
【答案】B
【解析】句意：雨季最令人愉悦的就是人们可以完全不再受到沙尘的困扰。is后跟从句作表语，即表语从句，表语从句不缺少主语、谓语和宾语，因此用that，that只起引导作用，故选B。
【考点】考查表语从句
【2016·江苏】21.It is often the case ______anything is possible for those who hang on to hope.
A. why B. what C. as D. that
【答案】D
【解析】句意：通常对于那些心存希望的人来说一切皆有可能。此句中It为形式主语，that从句为真正的主语。故D项正确。
【考点】考查主语从句
【2016·天津】11. The manager put forward a suggestion ____ we should have an assistant. There is too much work to do.
A. whether B. that C. which D. what
【答案】B
【考点】考查同位语从句。
1.(2015·江苏，25) Li Bai, a great Chinese poet, was born is known to the public, but some won't accept it.
【解析】句意：李白，一个伟大的中国诗人，其出生地是众所周知的，但也有一些人不接受它。从句where Li Bai was born作该句子的主语。
【答案】Where
3.(2015·北京，33)I truly believe beauty comes from within.
【解析】句意：我真的相信美来自人的内心。宾语从句意思完整只缺连接词，故用that。
【答案】that
4.(2015·北京，35) we understand things has a lot to do with what we feel.
【解析】句意：我们怎样理解事物与我们所感觉到的东西有很大关系。分析句子结构可知“ what we understand things”为主语从句，结合句意可知要用how。
【答案】How
5.(2015·浙江，6)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.
【解析】句意：如果你在河里或湖里游泳的话，务必调查清楚水面之下有什么。水中经常隐藏着石头或树枝。根据后面rocks and branches可知，此处要用what来引导。
【答案】what
6.(2015·重庆，8)We must find out Karl is coming, so we can book a room for him.
【解析】句意：我们必须知道他什么时候来，以便我们能给他预定房间。根据后面的so we can book a room for him可知这里指时间，故用when引导。
【答案】when
7.(2015·陕西，19)Reading her biography，I was lost in admiration for Doris Lessing had achieved in literature.
【解析】句意：读了多丽丝·莱辛的传记，我很钦佩她在文学上获得的成就。考查名词性从句。考查宾语从句的连接词。在介词for后的是宾语从句，从句中缺少achieve的宾语，故用what引导。
【答案】what
8.(2015·四川，8)The exhibition tells us we should do something to stop air pollution.
【解析】考查宾语从句。句意：这个展览告诉了我们，我们为什么要阻止空气污染。宾语从句缺少状语，根据意义为why。
【答案】why
9.(2015·安徽，25)A ship in harbor is safe, but that's not ships are built for.
【答案】what
10.(2015·福建，29)—I wonder Mary has kept her figure after all these years.
—By working out every day.
【解析】句意：——我想知道玛丽这些年是如何保持了那么好的身材。——通过每天锻炼。考查宾语从句的连接词。根据回答by doing可知是问的方式。
【答案】how
1.（2014北京卷）30. The best moment for the football star was _______ he scored the winning goal.
A. where B. when
C. how D. why
【考点】考察名词性从句
【答案】B
【解析】本题属于名词性从句中的表语从句。句意：对这位球星来说最好的时刻就是他射门得分的时候。Where表示地点，how表示方式，why结果；只有when表示的是时间。故B正确。
2.（2014北京卷）33.Some people believe _______ has happened before or is happening now will repeat itself in the future.
A. whatever B. whenever.
C. whereever D. however
【考点】考察名词性从句
【答案】A
3.（2014大纲卷）24. Exactly ____ the potato was introduced into Europe is uncertain, but it was probably around 1565.
A. whether B. why C. when D. how
【考点】考察名词性从句
【答案】C
【解析】本题考察的是名词性从句中的主语从句。在本句中Exactly when the potato was introduced into Europe.句义：土豆确切是在何时被引进到欧洲还不确定，但是大约是在1565年左右。Whether表示“是否”，why表示“原因”；how表示“方式”。根据后半句it was probably around 1565.可知本句谈论的是时间。故C正确。
4.（2014山东卷）7. It is difficult for us to imagine_____ life was like for slaves in the ancient world.
A. where B. what C. which D. why
【考点】考察名词性从句
【答案】B
【解析】本题考察的是名词性从句。动词imagine后面含有一个宾语从句what life was like for slaves in the ancient world。What引导起这个宾语从句，并在宾语从句中作为介词like的宾语。句义：对我们来说很难想象古代的奴隶的生活。Where和why不能在句中做宾语，which一直都表示疑问的意思“哪一个”。故B正确。
5.（2014天津卷）14. I think _______ impresses me about his painting is the colours he uses.
A. what B. that C. which D. who
【考点】考察名词性从句
【答案】A
【解析】本题中的I think是一个插入语，可以省略。实际上本句中的what impresses me是一个主语从句，what既是这个主语从句的引导词，也在句中做主语。句义：关于他的画我认为给我留下深刻印象的是他所使用的颜色。That在名词性出中不充当成分，which指特定范围之内的“哪一个”；who通常都是指人。故A正确。
（2013·新课标I卷）26. Police have found ________ appears to be the lost ancient statue.
A. which B. where C. how D. what
【答案】D
【考点定位】本题考查宾语从句的连接词。
（2013·北京卷)33.Experts believe people can waste less food by shopping only when it is necessary.
why B. where C. that D. what
【答案】C
【解析】根据句子结构可知， people can waste less food by shopping only when it is necessary作believe的宾语，因此是宾语从句，从句中成分、句意完整。That在名词性从句中不充当成分，也没有意义，因此选择C项。意为专家认为人们可以通过在必须的时候才购物的方式来减少浪费食物。Why作原因状语，意为为什么，where作地点状语，意为在那里，what作主语或者宾语或者表语。
【考点定位】考察名词性从句（宾语从句)
（2013·北京卷)31. makes the book so extraordinary is the creative imagination of the writer.
That B. What C. Who D. Which
【答案】B
【解析】根据....is the creative imagination of the writer可知， makes the book so extraordinary是一个主语从句，作is的主语。同时，从句中，makes缺少主语，因此选择B项（what 在名词性从句中充当主语、宾语或者表语），句意为，让这本书非同寻常的是作者具有创造力的想象力。That在名词性从句中不充当任何成分，也没有任何意义。Who在从句中作主语和宾语，意为谁，而该句中指的是书，因此排除C，which在从句中充当主语和宾语，意为哪一个，要有一个选择的范围，放在该题中明显意思不通，故排除D项。
【考点定位】考察名词性从句（主语从句)。
（2013·北京卷)21. Volunteering gives you a chance____ lives, including your own.
A. change B. changing C. changed D. to change
【答案】D
【解析】此处chance意为机会，用法为sb get/have/be given a chance to do sth意为有机会干某事。该题句意为，志愿活动给予你改变生活的机会，包括改变你自己的生活。
【考点定位】考察句型结构（名词chance的句型）
（2013·山东卷)30. It’s good to know _____ the dogs will be well cared for while we’re away.
A. what B. whose C. which D. that
【答案】D
【解析】动词know之后为宾语从句，从句中不缺少成分，故用that表陈述一件实事。
【考点定位】考查名词性从句
（2013·四川)6. _______ you said at the meeting describes a bright future for the company.
A. When B. How C. What D. That
【答案】 C
【考点定位】考察名词性从句连接词的用法。
（2013·天津卷)15. _____ I want to tell you is the deep love and respect I have for my parents.
A. That B. Which C. Whether D. What
【答案】D
【解析】句意：“我想告诉你的是我深爱我的父母并很尊重他们。”名词性从句的连词选用规则是：根据意思，缺什么就填什么，什么都不缺就填that。我们必须特别关注what所引导的名词性从句，what引导名词性时，必须在句中担当主、宾、表等成分，意思是“……的事或东西”，一般也不能用逗号和主句分割开来，插入语除外。我们还要关注whatever与what的区别，前者有两个意思——无论什么或anything that…（任何东西），而后者只表示“……的事或东西”；whatever与no matter what的区别在于前者既可以引导名词性从句也可以引导状语从句，而后者只能引导状语从句。其他配对词的用法也是类似的。
【考点定位】考查名词性从句。要关注连词的一般用法，同时要关注某些引导词的特殊用法。
1．I was wondering _____you could come to join us to be the volunteers in the Winter Olympic Games.
A. what B. that C. whether D. why
【答案】C
【解析】考查宾语从句。句意：我想知道你是否能来参加我们在冬季奥运会上做志愿者的工作。句中you could come to join us …作动词wonder的宾语，是一个宾语从句；wonder“想知道”，说明对后面的事情不肯定，要用whether来连接，表示“是否”。故选C。
2．—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. when B. how C. what D. why
【答案】D
【解析】考查名词性从句中引导词的运用。题干中空格后边需要的是表语从句，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在名词性从句中可以作主语、宾语、表语或者定语，表示“所、什么”，本题的从句不缺少主语、宾语、表语或定语，所以排除what。句意：——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。故选D。
3．The most exciting moment was ____ I was given the first prize.
A. which B. where C. why D. when
【答案】D
4．----I don’t exactly know ____ she is coming this time.
----By bicycle, of course.
A. when B. whether C. how D. why
【答案】C
【解析】考查宾语从句。上句：我不知道她这次会怎么来。下句：当然是骑自行车来的。根据回答By bicycle, of course.可知选C.
5．I was wondering _____you could come to join us to be the volunteers in the Winter Olympic Games.
A. what B. that C. whether D. why
【答案】C
【解析】考查宾语从句。句意：我想知道你是否能来参加我们在冬季奥运会上做志愿者的工作。句中you could come to join us …作动词wonder的宾语，是一个宾语从句；wonder“想知道”，说明对后面的事情不肯定，要用whether来连接，表示“是否”。故选C。
6．—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. when B. how C. what D. why
【答案】D
【解析】考查名词性从句中引导词的运用。题干中空格后边需要的是表语从句，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在名词性从句中可以作主语、宾语、表语或者定语，表示“所、什么”，本题的从句不缺少主语、宾语、表语或定语，所以排除what。句意：——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。故选D。
7．Despite difficulties, we must bear in mind we set this goal, stick to it and move forward regardless.
A. that B. why
C. when D. where
【答案】B
8．Though job applicants used to put salary in the first place, they now focus more on ________ they can achieve full potential in their new jobs.
A. whether B. why C. that D. what
【答案】A
【解析】考查宾语从句。句意：虽然求职者过去总是把薪水放在第一位，他们现在更多地关注他们是否能在新工作中充分发挥潜力。whether表示“是否”，符合语境。故选A。
9．Though job applicants used to put salary in the first place, they now focus more on ________ they can achieve full potential in their new jobs.
A. whether B. why C. that D. what
【答案】A
【解析】考查宾语从句。句意：虽然求职者过去总是把薪水放在第一位，他们现在更多地关注他们是否能在新工作中充分发挥潜力。whether表示“是否”，符合语境。故选A。
10．______ he is remembered for is his humorous style when he is talking.
A. Where B. That C. What D. How
【答案】C
【解析】考查主语从句。句意：他被记得的是他说话时的幽默风格。句子是用主语从句做主语，从句缺少引导词，从句中介词for缺少宾语，what起双重作用，故选C。
11．An accident happened on the main road. That is ______ traffic seemed to slow suddenly.
A. why B. how C. when D. what
【答案】A
【解析】考查表语从句。句意：在主路上发生了一场事故。那就是交通为什么突然慢了下来。此处用why引导的表语从句，表示“为什么”，故答案为A。
12．They have quite a few suggestions about ______ the service can be improved.
A. that B. why C. how D. what
【答案】C
13．He claims to be an expert in astronomy, but ________ he knows about it is out of date.
A. what little B. so much C. how much D. so little
【答案】A
【解析】考查名词性从句。分析句子___he knows about it is out of date可知，___he knows about it是主语从句，而what在主语从句中作动词know的宾语，故用what。句意：他自称是天文学方面的专家，但他对天文学知道的那一点东西是过时的。因此选A。
14．______ he is remembered for is his humorous style when he is talking.
A. Where B. That C. What D. How
【答案】C
【解析】考查主语从句。句意：他被记得的是他说话时的幽默风格。句子是用主语从句做主语，从句缺少引导词，从句中介词for缺少宾语，what起双重作用，故选C。
15．An accident happened on the main road. That is ______ traffic seemed to slow suddenly.
A. why B. how C. when D. what
【答案】A
【解析】考查表语从句。句意：在主路上发生了一场事故。那就是交通为什么突然慢了下来。此处用why引导的表语从句，表示“为什么”，故答案为A。
16．They have quite a few suggestions about ______ the service can be improved.
A. that B. why C. how D. what
【答案】C
【解析】考查宾语从句。选C句子的意思是“关于服务如何改进，他们提了多条建议”；如果选B句子的意思则是“就服务为什么能被改进，他们提了多条建议”。显然选B不符合逻辑，人们不会给改进的服务提意见。A、D项不符合语法，代入也不合语境。故选C。
17．He claims to be an expert in astronomy, but ________ he knows about it is out of date.
A. what little B. so much C. how much D. so little
【答案】A
18．Though job applicants used to put salary in the first place, they now focus more on ________ they can achieve full potential in their new jobs.
A. whether B. why C. that D. what
【答案】A
【解析】考查宾语从句。句意：虽然求职者过去总是把薪水放在第一位，他们现在更多地关注他们是否能在新工作中充分发挥潜力。whether表示“是否”，符合语境。故选A。
19．When you look at will have become a large tree, you will find a sense of satisfaction that you did your part to help solve the problem of climate change.
A. something; known B. which; to know
C. those; know D. what; knowing
【答案】D
【解析】考查宾语从句和非谓语动词。当你看到将变成了一棵大树的时候，你会发现一种满足感，知道你为解决气候变化问题所做的贡献。第一空是what引导的宾语从句，既做引导词又在句中做主语；此处是现在分词做伴随状态，故选D。
20．I was wondering _____you could come to join us to be the volunteers in the Winter Olympic Games.
A. what B. that C. whether D. why
【答案】C
【解析】考查宾语从句的用法。句中you could come to join us …作动词wonder的宾语，是一个宾语从句；wonder“想知道”，说明对后面的事情不肯定，要用whether来连接，表示“是否”。故选C。
21．—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. when B. how C. what D. why
【答案】D
22．----What did Tom say to you just now, John?
----He asked __________.
A. why I am so happy today
B. what will I do for the weekend
C. who did I play football with after school
D. if I could go to the movie with him tonight
【答案】D
【解析】考查宾语从句。句意：---Ｔｏｍ刚刚说什么呢？--他问是否今晚我能和他一起去看电影。此处是ｉｆ引导的宾语从句，句子应该用陈述句语序，且用一般过去时态，故选D。
23．An increasing number of learners are buying online courses in the belief ________ they are much convenient and cheaper.
A. which B. if
C. whether D. that
【答案】D
【解析】考查同位语从句。that引导的同位语从句是对前面的抽象名词进行解释说明。此句中横线后的句子便是对前面抽象名词belief的解释说明也不缺成分。故选D。
24．_______ the sun works attracts a lot of students who are interested in astronomy.
A. How B. What
C. That D. Why
【答案】A
【解析】考查主语从句。句意：太阳是如何运转的吸引了许多对天文学感兴趣的学生。“_______ the sun works”作主语，是主语从句，从句主谓成分齐全，how“如何”是副词作状语，符合语境。故选A。
25．______the author of the book intends to express is not the loneliness of being trapped on a deserted island but the faith in overcoming any problem ahead.
A. That B. How
C. What D. Why
【答案】C
26．The prize winner described to the class _______ he had managed to achieve excellence in his studies.
A. if B. how
C. what D. that
【答案】B
【解析】考查名词性从句。句意：获奖者向他的同班同学描述他是如何在学习中取得成就的。“_______ he had managed to achieve excellence in his studies”是describe的宾语从句，结合句意，该从句应用how引导，表示方式。B选项正确。
27．With private groups, there is a false sense _______ everybody in the groups knows each other and has the same interests in mind.
A. where B. that
C. what D. why
【答案】B
【解析】考查同位语从句。句意：对于私人团队而言，有一种虚假的感觉，团队中的每个人都互相了解并且心里有同样的兴趣。根据句意可知，这里名词sense后加that引导的同位语从句，对于这种“sense”进行内容的说明。故选B。
28．Facebook is a place where you can share is going on in your life with friends.
A. how B. whether
C. that D. what
【答案】D
【解析】句意：Facebook 是一个您在那里可以和朋友分享生活的地方。A. how如何；B. whether是否； C.who谁；D. what……的事情。what is going on? 发生了什么事？由句意可知，选D。
29．The doctor’s dilemma was _____ he should tell the patient the truth.
A. whether
B. which
C. that
D. what
【答案】A
30．It is estimated that China has over 770 million 4G users, which doubles ________ it was in 2015.
A. that B. which
C. what D. how
【答案】C
【解析】句意：现在中国大约有超过7亿7千万的4G用户，这个数目比2015年增长了一倍。double是动词，后面跟宾语；同时横线处的词在后面从句中作was的表语，根据句意，用what，故选C。
