when was your bike bought改为主动句
问题描述：
when was your bike bought改为主动句
答
When did you buy your bike?被动 bike 被买.was 是is 的过去式. 如果是陈述句,就是you bought bike 在某个时间.疑问句,主动就会用助动词.do ,when did you do something?--when did you buy your bike?希望采纳...