为什么在这道题里填five-year-old?

five years old 和five-year-old的区别 five years old与five-year-old区别 是FIVE YEAR OLD还是FIVE YEARS OLD They were children.Four and five-year-olds,为什么old加s He died two years ago,l____his five-year old daughter 为什么不用过 纠错He is five-year-old this year a five-year-old boy还是a five-year old boy a five-year-old boy与the boy is five years old的区别 five-year-old可以做定语,five years old可以作定语吗? five-year=old和five years old用法有什么区别啊 He died two years ago,l____his five-year old daughter a five-year-old boy翻译成汉语是什么