名词性从句练习题及答案

名词性从句复习——练

Ⅰ.单句语法填空
1．Exactly ________ the potato was introduced into Europe is uncertain, but it was probably
around 1565．
答案：when 句意：土豆被引入欧洲的确切时间不能确定，但很可能是1565年左右。
分 析句子结构可知，设空处为主语从句的引导词，从around 1565判断，这里指时间，故填
when。
2．It shocked the world ________ the United States withdrew from some major agreements it
had been committed to, including the 2015 Paris Agreement on climate change and the
2015 Iran Nuclear Deal．
答案：that 句意：令世界震惊的是，美国退出了它所承诺的一些主要协议，包括2015
年《巴黎气候变化协定》和2015年《伊朗核协议》。此处it是形式主语，真正的主语是that
引 导的主语从句。
3．I need help now! I have to fix a leaking pipe in my bathroom but I'm not sure ________ to
begin．
答案：where 句意：我现在需要帮助！我不得 不修理洗手间里一个正在漏水的管子，
但是我不确定从何处着手。此处表示是管子哪里漏水，表示地点， 填where。
4．Forty grams of meat per day is ________ people should consume in order to stay fit．
答案：what 句意：为了保持健康，人们每天应该消耗40克肉。“________ people should
consume”是表语从句，该从句中，consume缺少宾语，且 表示“所……的东西”，故要用what
引导该从句。
5．The famous player tried again and again after each failure． That's ________ he succeeded
at last．
答案：why 句意：每次失败后，这位著名的球员一次又一次地尝试。那就是为什么他
最终成 功了(的原因)。be后面的是一个表语从句，用why引导从句，表示结果，故填why。
6．The retired engineer is showing ________ the wheelchair climbs stairs, which all the
curious visitors want to know．
答案：how 句 意：这位退休的工程师正在展示轮椅如何爬楼梯，这是所有有好奇心的
游客想知道的。由句意可知，填h ow，意为“怎么，如何”。这是how引导的宾语从句。
7．It hasn't been made clear ________ the new underground line is to be open to traffic．
答案：when 句意：新的地铁线路何时开放还不清楚。 由句意可知，填when。这是
when引导的主语从句，it是形式主语。

8．The problem is ________ sometimes when we are given something on a constant basis, we
start to take it for granted and forget to be thankful for what we already have．
答案：that 句意：问题是，有时候当我们不断地被给予某些东西时，我们就认为这是
理所当然的，从而忘记了要对我 们已经拥有的东西应该心存感恩。由于从句中成分完整，因
此应用that来引导，that在从句中只 起连接作用，不作任何成分。
9．Ten percent of life is ________ happens to you and ninety percent is ________ you
respond to it．
答案：what; how 句 意：生活的百分之十是事件本身，另有百分之九十在于你如何回
应它。分析句子结构可知，第一空引导表 语从句，happens to you缺少主语，意为“什么事”，
因此应用what来引导；第二空也引导表语从句，you respond to it成分齐全，因此应用how，
表方式。
10．After a day's exhausting climb we arrived at ________ we had been told was Garden in
the Air．
答案：what 句意：经过一天筋疲力尽的攀爬，我们终于到了那个被称为“空中花园”
的地 方。分析句子结构可知，at为介词，后面是一个宾语从句，we had been told为插入语，
宾语从句中缺主语，且在句中意为“……的事物(东西)”，故用what。
11．Sometimes, ________ we show our gratitude to a person is reflected in the kind of food
we serve him or her．
答案：how 句意：有时我们如何表达对一个 人的感激之情会体现在招待他或她的食物
种类上。此处用how，表方式，引导主语从句。
12．It remains to be seen ________ this plan is practical enough to keep the project going．
答案：whether 句意：这个计划是否足够可行来让这个工程继续下去，还有待于进一
步 观察。whether引导主语从句，it是形式主语。
13．Some summer camps can provide you with as many as ten courses, and you are required
to choose ________ suits you best．
答案：whichever 句意：一些夏令营可以提供多达10门课程，你可以从中选 择最适合
自己的课程。choose后面是宾语从句，从句中缺少主语，且前句提到范围即as many as ten
courses，故此处表示你最喜欢的任何一门，故填whichever。
14．It is reported that a huge percentage of bird species are in danger． It's ________ their
habitats or homelands are disappearing．
答案：because 句意：据报道 大部分鸟类正面临危险。这是因为它们的栖息地或家园
正在消失。空格处引导表语从句。根据前后两句的 关系，空格处表示因果关系，故使用because。
15．I just wonder ________ it is that all the villagers think highly of him．
答案：why 句意：我就是想知道为什么所有的村民对他的评价这么高。wond er后面用

why引导宾语从句。
16．The most exciting moment was ________ I was given the first prize．
答案：when 句意：我最兴奋的时刻是我获得第一名的时候。根据句中的“exciting
moment”可知，此处是when引导的表语从句。
17．They are discussing the problem ________ they should stop investing money in that
project．
答案：whether 句意：他们正在讨论是否应该停止向那个项目投资的问题。分析句子
结 构，空格后面是一个同位语从句，解释前面“problem”的内容，根据句意，缺少表示“是否”
的 词，而if不能引导同位语从句，只能填whether。
Ⅱ.单句改错
1．That surprised us most was that Tom should have left without a word．
______________________________ __________________________________________
答案：That→What 引导主语从句并且在从句中作主语，且意为“……的事情”，应用
What。
2．It's no longer a question now that man can land on the moon．
________________________________________ ________________________________
答案：that→whether 句意：现在，人类是否能登上月球已经不再是一个问题了。句中it作形式主语，真正的主语是whether引导的从句。
3．The real reason why I don't have a hobby is because I don't have time．
___________________________________ _____________________________________
答案：because→that 句意：我没有爱好的真正的原因是我没时间。表语从句中不缺少成分，并且句意完整，因此应用that。The reason why ．．． is that ．．． “……的原因是……”。
4．The news they had won the game soon spread over the whole country．
____ __________________________________________________ __________________
答案：news后加that 句意：他们赢得比赛的消息很快就传遍了全国。that引导同位语
从句，解释前面的news 的内容，that不能省略。
5．Mary is a humorous and warm?hearted woman and that is because she is a most popular
person in her community．
____ __________________________________________________ __________________
答案：because→why 句意：玛丽是一个很幽默而且很热心的女人，这就是她为什么会
成为社区里非常受欢迎的人。that is后引导的句子作is的表语，表结果，故用why。
6．The question is if they will be able to help us．
________________ __________________________________________________ ______
答案：if→whether 句意：问题是他们是否能帮我们。本句中包含表语从句， if不连接
表语从句，故将if改为whether。

7．In the office an electrical engineer is looking through the instructions to know whether the
heat system works．
________________________________ ________________________________________
答案：whether→how 句意：办公室里一名电气工程师正在浏览说明书为了弄明白供热
系统是如何工作的。know后是一个宾语从句，连接词在从句中表示方式。根据句意可知，
应将wh ether改为how。
8．He says the book is very interesting, and all the children love to read it．
______________________________________________ __________________________
答案：and后加that 动词后接有两个或者两个以上的宾语从句时，第二个以及以后的
宾语从句中的that不能省略。
Ⅲ.语法填空 (名词性从句专练)
1．________worries my classmate Mary a lot these days is 2.________she puts on too much
weight and she is frequently has some doubts 3.________she eats too much fast food high
in fat or ，with the college entrance examination approaching，she becomes more
stressful and she can't sleep well these this is 4.________she becomes fatter these
days，she thinks.5.________she becomes slimmer and healthier has been her main she
wants to consult some experts and gain some where she could get better
suggestions and 6.________will give her better advice also puzzle is her parents' suggestion
7.________she should consult Professor Wang in Zhongshan sor Wang suggests
8.________she keep a balanced diet should eat vegetables and fruit high in fiber，vitamin
and 's more，if she wants to lose weight，she had better take regular exercise more
than half an hour a asked Professor Wang 9.________she should take sor
Wang advised her to take exercise at 5 o'clock in the is 10.________she will have
more time to do is with the help of Professor Wang that Mary has become much healthier
now.
答案： r 5．How
e
Ⅱ.短文改错
My English teacher recommends me to take a part in an English speech competition
yesterday. But I doubt that I have the ability to win. It is known to all my classmate that I can
speak English as if he were a native speaker. Therefore, I dare not voice my opinions, especial in
public. My best friend Lily has been encouraging me to accept the challenge. On her opinion,
whether I can win the competition or not doesn't matter as long as I try my best. Encouraged by
her, I have decided to have a try, challenged myself. I must conquer my shy. Wish myself good
luck.

答案：第一句：recommends→recommended; 去掉a
第二句：that→whetherif
第三句：classmate→classmates; he→I
第四句：Therefore→However; especial→especially
第六句：On→In
第七句：challenged→challenging
第八句：shy→shyness