非限制性定語從句可以用what嗎

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非限制性定語從句可以用what嗎

what不可以引導非限制性定於從句

1.限制性定語從句説明先行詞的情況,對先行詞起限定作用,與先行詞關係十分密切,不可用逗號隔開,也不可省略,否則全句意義就不完整.

如:

This is the telegram which he refers to.

Is there anything (that) I can do for you?

2.非限制性定語從句只是對先行詞作補充説明,沒有限定作用,它與先行詞的關係比較鬆散,因而不是關鍵性的,如果省略,原句的意義仍然完整.這種從句在朗讀時要有停頓,在文字中通常用逗號與主句隔開.

如:

This note was left by Tom,who was here a moment ago.

As a boy,he was always making things,most of which were electric.

引導非限制性定語從句的關係詞有:who,whom,whose,which,when 和 where,不可以用that和why.

另外,非限制性定語從句從意義上講,相當於一個並列句,在口語中使用並不普遍,在日常生活中,人們通常用並列句或簡單句來表達.

如:

I told the story to John,who later did it to his brother.

= I told the story to John,and he later told it to his brother.

Yesterday I happened to see John,who was eager to have a talk with you.

= Yesterday I happened to see John and he was eager to have a talk with you

非限制性定語從句不可以用what引導,what引導的是一般是名詞性從句。非限定性定語從句起補充説明作用,缺少也不會影響全句的理解,它與主句往往用逗號隔開,如若定語從句有限制性和非限制性兩種。限制性定語從句是先行詞不可缺少的部分,去掉它主句意思往往不明確非限制性定語從句是先行詞的附加説明,去掉了也不會影響主句的意思,它與主句之間通常用逗號分開,將非限定性定語從句放在句子中間,其前後都需要用逗號隔開。非限制性定語從句的引導詞有:who引導,whose引導,which引導,when引導,where引導,as引導。

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