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one,ones,them分别代替什么

题目详情
one,ones,them分别代替什么
▼优质解答
答案和解析
one 代替同类事物单数,复数用ones( 同类不同物)
them 代替前面提到的东西(复数)

Your pen is nice,where did you buy it I want to buy one.
Your books are interesting ,where did you buy them I want to buy ones .