问题描述: 120-metres long 120-metres-long 120-metre long 120 metres long 哪个对? 1个回答 分类:英语 2014-12-05 问题解答: 我来补答 120 metres long 与另一个120-metre-long 对.前者做表语(用在be动词后),后者做定语,后面必须加一个名词.用法同:He is 12 years old.He has a twelve-year-old son. 展开全文阅读