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Ifounditnecessarytohelpthedisabled.这句话为什么it后面不能加is?haveSTh.down/cut/repaird这类是什么结构?
题目详情
I found it necessary to help the disabled.这句话为什么it后面不能加is?
have STh.down/cut/repaird这类是什么结构?
have STh.down/cut/repaird这类是什么结构?
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答案和解析
I found it necessary to help the disabled.it 后面可以加is ,完全正确,只不过加和不加句子结构不同
I found it necessary to help the disabled.这只是一个简单句,it作形式宾语 ,动词不定式to help the disabled做真正的宾语
I found 【that 省略了】it 【is】necessary to help the disabled 此处是宾语从句,省略了连词that.此处it 做宾语从句的形式主语.
have sth.down/cut/repaird这类是什么结构?
have 是使役动词,表示使某物怎么样.sth后面的成分做宾补
have sth done 使某物被做,表示被动
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I found it necessary to help the disabled.这只是一个简单句,it作形式宾语 ,动词不定式to help the disabled做真正的宾语
I found 【that 省略了】it 【is】necessary to help the disabled 此处是宾语从句,省略了连词that.此处it 做宾语从句的形式主语.
have sth.down/cut/repaird这类是什么结构?
have 是使役动词,表示使某物怎么样.sth后面的成分做宾补
have sth done 使某物被做,表示被动
如仍有疑问 无疑后请采纳
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