问题描述： while在句首能表转折吗,举几个例子 1个回答 分类：英语 2014-12-12 问题解答： 我来补答 楼上,can 后面怎么加成doing了!表误人子弟……The soles are leather,while the uppers are canvas.鞋跟是皮的,而鞋面是帆布的While he loves his students,he is very strict with them.虽然他爱他的学生,可是他对他们很严格. 展开全文阅读
