为什么It's a four-foot-long box.=The box is four feet long.主要在four-foot和four feet上
问题描述:
为什么It's a four-foot-long box.=The box is four feet long.
主要在four-foot和four feet上
答
four-foot-long 这个格式的词就得用单数.比如THREE-YEAR-OLD BOY