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公共英语pets五级名词性从句讲解

时间:2020-11-05 13:04:42 五级 我要投稿

2017年公共英语pets五级名词性从句讲解

  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。以下是小编为大家搜索整理2017年公共英语pets五级名词性从句讲解,希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!

  【名词性从句】

2017年公共英语pets五级名词性从句讲解

  概念

  在句子中起名词作用的句子叫名词从句 (Noun Clauses)。 名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等,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:

  a.It + 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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