高中英语-名词性从句 专题讲解及巩固练习(含答案)
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1 高中英语名词性从句专题讲解及巩固练习
定义:起名词性作用的从句,叫名词性从句。本来该由名词充当的主语、宾语、表语和同位语部分,换由一个句子来充当,这样的句子就是名词性从句。
【归纳】
1. 只能用whether,不能用if
a. 主语从句
b. 表语从句
c. 同位语从句
e. 介词后的宾语从句
f. whether to do 做动词宾语不能用if to do.
g.whether or not 连在一起引导宾语从句时不用if.
2.that和what的区别
what除起连接作用外,还在名词性从句中充当成分,可做从句的主语、宾语、或表语。 引导词 功能及作用
从属连词 that 只连接句子,无意义
If/whether 连接句子,表疑问
连接代词 what which who 主语
what which whom 宾语、表语
whose 形容词词性,后接名词
wh-ever 与wh-功能一致,语气加强
连接副词 when where why how 状语,连接副词不能与介词搭配 2 that在名词性从句中不充当任何成分,只起连接作用。
例:I have no doubt that he will come.
I have no idea what he did that afternoon.
一.主语从句:在复合句中作主句的主语。
__________ he is a famous singer is known to us.
__________ he will go to America is not yet fixed.
__________ she’s coming or not doesn’t matter too much.
__________ broke the glass yesterday is not clear.
【keys】That; When/How; Whether; Who
【归纳】
1. 为避免主语冗长,句子头重脚轻, 经常用it作形式主语, 主语从句放在后面作 真正的主语。
例:That her hair was turning gray worried her a lot.
-----It worried her a lot that her hair was turning gray.
常考句型:
It’s likely / possible / important / necessary / clear that…
很可能 / 重要的是… / 必要的是… / 很清楚…
It’s said / reported that…据说/据报道…
It seems / appears / happens that…显然、明显、碰巧…
It’s been announced / declared that…已经通知/宣布… 3 It’s no wonder that…并不奇怪/无疑…
It’s a pity/a fact /a common knowledge / a common saying that…
2. if不能引导主语从句,只能用whether
3.单个的主语从句作主语时, 谓语动词用句单数形式;如果是两个或两个以上的主语作主语,谓语动词则视情况而定。
例:When and where he was born hasn’t been found.
When he was born and where he was born haven’t been found.
【巩固练习】
1._________ makes this shop different is that it offers more personal services.
2._________I can pay back the help that people give me makes me very happy.
3.It’s not clear _________ was responsible for the accident.
4._________ is in the regulations that you should not tell other people the password of your
e-mail.
5._________ he made an important speech at the meeting was true.
6._________we’ll go camping tomorrow depends on the weather.
7.________ is known to us all is that America is a developed country belonging to the First
World.
8._________ worries my classmate Mary a lot these days is that she puts on too much weight
and she is frequently ill.
9. It makes no difference ________ you will go today or tomorrow.
10.It is known to us ______ where there is pollution, there is harm.
4 【keys】1.what 2.that 3.who 4.what 5.that
6.whether 7.what 8.what 9.whether 10.that
二.表语从句:在复合句中作主句的表语。
新增引导词:as if, as though , because
例:It looks as if it’s going to rain.
【归纳】
1. 如果句子的主语是suggestion, advice, order, demand, proposal等名词时,后面引导的表语从句用should+动词原形,should可省略。
例:His suggestion is that we (should) finish the work at once.
2.固定句型:
The reason why ...is that … … 的理由是,… 的原因是…
It is because … 这是因为…
【巩固练习】
1.This town is _________ she was born.
2.The question is _________ we can’t go there today.
3.The reason why he has made such great progress is _________ he has never wasted his time.
4.My advice is that he _________ (go) to school by bike.
5._________ she couldn’t understand was _________ fewer and fewer students showed interest in
her lessons.
6.Energy is _________ makes things work.
7.The result is _________ we won the game.
8.This is ________ we want to know. 5 9. But where she could get suggestions and ________ will give her advice puzzles her.
【keys】1.where 2.that 3.that 4.(should) go 5.what;why
6.what 7.that 8.what 9.who
三宾语从句:在复合句中作主句的宾语。
【归纳】
1. 在谓语动词、介词、动词不定式、分词、动名词之后都可以带有宾语从句。某些形容词如sure, happy, glad, certain, pleased 等之后也可以带有宾语从句。
例:
We believe that he is honest.
Pay attention to what the teacher said.
I am sure/certain that he’s at home now.
adj + 宾语从句,即“形宾”:
形容词都是表示思想状况或感情色彩的形容词,如certain, sure, positive, afraid, convinced,
anxious, disappointed, worried, glad, happy, sorry, amazed, surprised, aware, doubtful,
confident等等
2. 如果宾语从句是由that 引导,and或but连接的两个或两个以上的并列的宾语从句, 那么只有第一个that可以省略,第二个或第二个以后的that不能省略.
例:He said ( that ) the text was very difficult and that we had to work hard at it.
如果宾语从句后还有宾语补足语,就用it作形式宾语,将宾语从句后置,并且that不可以省略.
例:He has made it clear that he will win the game.
3.表示“建议,命令,要求”的宾语从句,如advise, suggest, order, request, require, demand 等,从句用虚拟语气,即should+动词原形,should可省略。