为什么this is a XXX改复数,有时改成these are 有时又改成they are?
问题描述:
为什么this is a XXX改复数,有时改成these are 有时又改成they are?
答
要看XXX的具体内容了,如果是指物,就是these are.如果是指人,就是they are.
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