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非限制性定于从句的引导词有哪些

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非限制性定语从句的引导词及其用法如下:

一、常用引导词

which

- 指代物,作主语或宾语,例如:

*This is the book which I borrowed from the library.*

- 不能省略,且需用逗号与主句分隔。

who

- 指代人,作主语或宾语,例如:

*She is the teacher who taught us English.*

- 作宾语时用whom(介词后),例如:

*He met his friend, whom he had known for years.* 。

whom

- 指代人,作宾语,例如:

*Tom likes the song sung by whom.*

- 介词后必须使用whom,例如:

*This gift is from my friend, whom I met last year.* 。

whose

- 表示所属关系,作定语,例如:

*This is the car whose owner lives next door.*

- 可指人或物,例如:

*The company, whose profits doubled last year, is now a leader in the industry.* 。

as

- 常用于非限制性定语从句中,表示“正如”,例如:

*As she was leaving, the phone rang.*

- 可以省略,但意义会发生变化(如:

*He passed the exam, as expected.* 。

when

- 指代时间,作时间状语,例如:

*This event took place when I was a child.*

- 通常与主句谓语动词保持一致时态。

where

- 指代地点,作地点状语,例如:

*We celebrated our anniversary where we first met.*

- 与主句谓语动词保持一致时态。

二、特殊说明

that:

不可用于非限制性定语从句,仅限限制性定语从句。

关系副词(如when, where):需置于句首或句尾,例如:

*The movie, which was released last year, won several awards.* 。

三、注意事项

逗号分隔:

非限制性定语从句与主句之间必须用逗号隔开,但若从句以 thatwhich引导且位于句首时,逗号可省略。

省略规则:

- 当关系代词在从句中作宾语且被介词修饰时,可省略(如:

*Tom likes the book which he read.* )。

通过以上规则,可灵活运用引导词构建非限制性定语从句,避免语法错误。