what与which的用法He passed the exam,which made his parents very pleased.请问问什么要用WHICH而不是WHAT

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what与which的用法He passed the exam,which made his parents very pleased.请问问什么要用WHICH而不是WHAT
what与which的用法
He passed the exam,which made his parents very pleased.
请问问什么要用WHICH而不是WHAT

what与which的用法He passed the exam,which made his parents very pleased.请问问什么要用WHICH而不是WHAT
which 只带这件事
what指代内容
what可以引导名词性从句,在从句中可做主语、宾语、表语.
which是关系代词,引导定语从句,在从句中可充当主语、宾语、表语.引导定语从句的词分为关系代词(which,that,who,whom,whose,as)关系副词(when,where,why),注意:没有what.
简单点记吧:定语从句放在表示“事物”的名词后面,且关系代词在从句中充当句子成分,用which.如果不是定语从句,就考虑用what.
如:
1.This is the book which I talked about yeasterday.
(which引导定语从句放在名词book后面起修饰作用,which在从句中充当talk about的宾语)
2.This book is what I talked about yesterday.(what引导名词性从句,放在is之后,what 在表语从句(名词性从句)充当talked about的宾语.)