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The computer,___help we human beings have stepped into the i

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The computer,___help we human beings have stepped into the information age,is regarded as an
接上:important invention in the 20th century.
A.which B.whose C.with its D.with whose
请问这个句子该怎么分析?我选A怎么不行?with whose help we human beings...这句话是不是有问题?我看得很奇怪,句中的we是不是应该是us才对?要不然句中不是有两个主语了吗——whose和we.还有,whose能和介词搭配吗?
The computer,___help we human beings have stepped into the i
主句是 The computer is regarded as an important invention in the 20th century.(电脑被认为是20世纪的一项伟大发明.)
中间插入的是一个定语从句,which在定从中只能作主语和宾语,而这个句子已经有主语和宾语了,所以不能填.
有些同学填which,是受“介词+which/ whom”的影响,但这一句不是这个结构.
这个定从,你可以这样子看,
,with whose help ,we human beings have stepped into the information age,
“with whose help",作方式状语,“在电脑的帮助下”
主语we,human beings作同位语,have stepped into谓语,the information age宾语
“我们(人类)已经迈入了信息时代.”
还有,注意whose在定语从句的用法,它意思是“谁的”,作定语,先行词可以是人,也可以是物.如本题中,whose 修饰help,指代先行词电脑,那意思就是“电脑的帮助”