题目内容：

this kind of cimputer is very expensive computer of this kind are very expensive
请问,为什么第一个用is,第二个用are?
this kind of computer is very expensive 和
computer of this kind are very expensive

优质解答

第二句主语应该是：
computers of this kind ,中心词是computers名词复数,谓语用复数
第一句主语是单数,中心词是kind,谓语用单数
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