复习专题名词性从句专项练习题及答案一、初中英语名词性从句1. is known to all is that the earth is smaller than the sun.A. AsB. WhatC. ItD. Which【答案】 B【解析】【分析】句意:众所周知地球比太阳小。
is known to all 是主语从句,从句中缺少主语,因此用what,选B。
【点评】考查名词性从句,本题涉及what引导的主语从句。
2.Has it been announced ______?A. when are the planes to take offB. that are the planes to take offC. where are the planes to take offD. when the planes are to take off【答案】 D【解析】【分析】句意: 飞机什么时候起飞已经宣布了吗?此处是when引导的主语从句,且要用陈述句语序,故选D。
【点评】考查名词性从句,it作形式主语,关系副词when引导的从句作真正的主语。
3.In the past decade, our education system too much on grades. However, grades have a direct connection with future success is still a question.A. focused; whetherB. focused; ifC. has focused; whetherD. has focused; if【答案】 C【解析】【分析】考查时态和主语从句。
根据In the past decade,在最近的几十年里,可知句子用现在完成时态,our education system是句子的主语,单数形式,所以第一空填has focused;第二空是主语从句做主语,if是否,不能引导主语从句,所以第二空填whether。
故选C。
【点评】主语从句主要有三类:1)(1)由连词that引导的主语从句:引导词that无含义,在句中不做成分,不可以省。
例如:That you will win the medal seems unlikely.你想获得奖牌看起来是不可能的。
(2)用连词whether 引导的主语从句:whether有含义(是否),在句中不做成分,不可以省。
例如:Whether she is coming or not doesn't matter too much.她来不来都无关紧要。
注意:if不能引导主语从句。
2)用连接代词引导的主语从句(在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中,其连接代词在句中起名词性作用,担当一定成分).例如:What you need is more practice.你所需要的是更多的训练。
3)用连接副词when, where, why, how引导的名词性从句(其连接副词有含义,在句中作状语。
)例如:Where we should leave it is a problem.4.____ made me more unhappy was ___ the boy asked my friend to be his girlfriend and she agreed.A. What; thatB. That ; thatC. What; whetherD. It; that【答案】 A【解析】【分析】句意:让我更不高兴的是那个男孩要求我的朋友做他的女友,她同意了。
第一空填what,它一方面在句子中引导主语从句,另一方面又在主语从句中作主语;第二空用that引导表语从句且从句中不缺成分,表示对前面情况的说明。
故选A。
【点评】考查了名词性从句,本题涉及what引导的主语从句以及that引导的表语从句。
5.______ amazed the NBA world is ______ Kobe Bryant scored 81 points just in one game.A. That, whatB. What, thatC. That, thatD. What, what【答案】 B【解析】【分析】句意:使NBA世界惊讶的是Kobe Bryant在一场比赛中得了81分。
根据句意可知,句子主语是一个主语从句,引导词即起引导作用又要做从句的一个成分,所以第一空填What;第二空是that引导的表语从句,只起引导作用,故选B。
【点评】考查名词性从句,本题涉及关系代词what引导的主语从句和表语从句的应用。
6.Exactly _________ the potato was introduced into Europe is uncertain, but it was probably around 1565.A. whetherB. whenC. whyD. how【答案】 B【解析】【分析】句意:土豆被引进欧洲具体的事件不被确定,但是可能是在1565年左右。
根据时间状语round 1565得知这里是指时间不确定。
故选B。
【点评】考查名词性从句,本题涉及when引导的主语从句。
7._______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today.A. What; whatB. That; thatC. What; thatD. That; what【答案】 C【解析】【分析】句意:让我感到担忧的是,今天的歌星是以青少年为中心的。
分析句子可知,主语从句中的谓语动词makes 缺少主语,主语从句中缺少宾语一般用what,因此选择 what 来引导主语从句;系动词 is 后面的表语从句句意完整,不缺少成分,因此选择 that 引导表语从句。
分析选项可知C项符合题意,故选C。
【点评】考查名词性从句,本题涉及what引导的主语从句和that引导的表语从句的应用。
8._______ is troubling me is ______ I don't understand ________ he saidA. What; that; whatB. What; what; whatC. That; that; whatD. Why; that; which 【答案】 A【解析】【分析】句意:我烦恼的是我不明白他说的话。
第一空是主语从句,从句中缺主语,要用What;第二空是表语从句,从句不缺成分,所以要填that;第三空是宾语从句,从句中的动词understand缺宾语,要填what。
故选A。
【点评】考查名词性从句,本题涉及主语从句,表语从句和宾语从句的应用。
9.________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties.A. As; whoseB. It; whoseC. As; whomD. It; whom【答案】 D【解析】【分析】句意:我们都知道,那位老科学家,过去生活很艰苦,到了八十多岁还在努力工作。
第一空it is known to us all that…是个固定句型,意为“众所周知…”;第二空为介词+关系代词引导的定语从句,先行词the old scientist指人,作介词for的宾语,只能用whom,故选D。
【点评】考查名词性从句和定语从句,本题涉及固定句式it is known to us all that…和whom引导的限制性定语从句。
10.He took a trip to Beijing last week and ________ he saw at the Forbidden City impressed him deeply.A. thatB. howC. whatD. which【答案】 C【解析】【分析】句意:上周他到北京旅行了,他在故宫所看到的给他留下了深刻的印象。
分析句子结构可知,连词and后为一个名词性从句,因此应该使用what引导,且what在从句中作主语,故选C。
【点评】考查名词性从句,本题涉及what引导的主语从句。
11.The question new measures should be taken to control the terrible air pollution is puzzles scientists a lot.A. that; whatB. which; thatC. what; whatD. that; that【答案】 C【解析】【分析】句意为:应该采取什么样的新措施来控制空气污染的问题,是让科学家非常困惑的事情。
第一空根据主语question,可知措施并不明确,应该指“什么样的new mea sures”,关系词应用what;第二空,be动词is后的表语从句缺少主语,应用关系词what,故选C。
【点评】考查同位语从句。
注意that引导同住语从句时,在句中不做成分,也没有词义。
12.We believe ________ you have been devoted to ________ naturally of great necessity.A. that; beingB. all that; beC. that all; areD. what; is【答案】 D【解析】【分析】句意:我们相信你所投入的当然是非常必要的。
分析句子可知,believe 后接宾语从句,宾语从句中you have been devoted to缺少宾语,表示事物故用what;what you have been devoted to为主语,从句作主语,谓语动词用单数,故选D。
【点评】考查名词性从句和主谓一致,本题涉及what引导的主语从句和一般现在时。
13.It is clever ______ you ______ out the problem.A. for; to workB. of; workingC. for; workingD. of; to work【答案】D【解析】【分析】it可指代下文内容做形式主语,其主要有两种形式:1、It's + 形容词 + of + sb + to do sth.这个句型,形容词一般为sb的所具有的一种品质性格。