问题标题:
Myfatherisforty-fiveyearold.有没有错误?
问题描述:

Myfatherisforty-fiveyearold.有没有错误?

钱立军回答:
  Myfatherisforty-fiveyearsold.   你忘了在year后加s了.   不懂再问哦.
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