五种名词性从句举例精编
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五种名词性从句举例篇1
在劳力上劳心，是一切发明之母。事事在劳力上劳心，变可得事物之真理。以下是网友为大家搜索整理2017年公共英语pets五级名词性从句讲解，希望能给分享的“五种名词性从句举例精编”，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
引导名词性从句的连接词
引导名词性从句的连接词可分为三类：
连接词：that、whether、if不充当从句的任何成分)
连接代词：what、whatever、who、whoever、whom、whose、which.
连接副词：when、where、how、why
不可省略的连词
1. 介词后的连词
2. 引导主语从句和同位语从句的连词不可省略。
that she was chosen made us very happy.
we heard the news that our team had won.
比较：whether与if 均为“是否”的意思。 但在下列情况下，whether不能被if 取代：
1. whether引导主语从句并在句首
2. 引导表语从句
3. whether从句作介词宾语
4. 从句后有“or not”
whether he will come is not clear.
大部分连接词引导的`主语从句都可以置于句末，用it充当形式主语。
it is not important who will go.
it is still unknown which team will win the match.
名词性that-从句
1)由从属连词that引导的从句叫做名词性that-从句。that只起连接主句和从句的作用，在从句中不担任任何成分，本身也没有词义。名词性that-从句在句中能充当主语、宾语、表语、同位语和形容词宾语，例如：
主语：that he is still alive is sheer luck.他还活着全靠运气。
宾语：john said that he was leaving for london on wednesday.约翰说他星期三要到伦敦去。
表语：the fact is that he has not been seen recently.事实是近来谁也没有见过他。
同位语：the fact that he has not been seen recently disturbs everyone in his office.
近来谁也没有见过他，这一事实令办公室所有的人不安。
形容词宾语：
i am glad that you are satisfied with your job.
你对工作满意我感到很高兴。
2)that-从句作主语通常用it作先行词，而将that-从句置于句末，例如：
it is quite clear that the whole project is doomed to failure.
很清楚，整个计划注定要失败。
it's a pity that you should have to leave.
你非走不可真是件憾事。
用it作形式主语的that-从句有以下四种不同的搭配关系：
+ be +形容词+ that-从句
it is necessary that...
有必要……
it is important that...
重要的是……
it is obvious that...
很明显……
b. it + be + -ed分词+ that-从句
it is believed that...
人们相信……
it is known to all that...
从所周知……
it has been decided that...
已决定……
c. it + be +名词+ that-从句
it is common knowledge that...
……是常识
it is a surprise that...
令人惊奇的是……
it is a fact that...
事实是……
d. it +不及物动词+ that-分句
it appears that...
似乎……
it happens that...
碰巧……
it occurred to me that...
我突然想起……
名词性wh-从句
1)由wh-词引导的名词从句叫做名词性wh-从句。wh-词包括who、whom、whose、whoever、what、whatever、which、whichever等连接代词和where、when、how、why等连接副词。
wh-从句的语法功能除了和that-从句一样外，还可充当介词宾语、宾语补语和间接宾语等，例如：
主语：
how the book will sell depends on its author.
书销售如何取决于作者本人。
直接宾语：
in one's own home one can do what one likes.
在自己家里可以随心所欲。
间接宾语：the club will give whoever wins a prize.
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