问题描述: What's wrong with John?-He hurt himself_____(play)soccer. 1个回答 分类:英语 2014-12-15 问题解答: 我来补答 playing其实是when playing football,踢足球时伤了,把when省略掉就是结果 再问: when引导的从句为什么要是正在进行时? 再答: 哦,意思是说,他在玩球的时候受伤的,所以,应该是 (when he was) playing football再问: “习惯于做某事”是be used to doing sth,那“习惯某事”是be used to sth吗? 再答: 没错,doing sth相当于动名词,也就是sth,是一样的 展开全文阅读