they all went to the mountains yesterday morning怎样变成一般疑问句

问题描述:

they all went to the mountains yesterday morning怎样变成一般疑问句

直接对他们昨天早晨的动作提问就可以了,用一般过去时.
What did they all do yesterday morning.all后面为什么用do这是一般疑问句的用法。因为they all做主语,所以是在all后面加do。举个例子:What did you do last night?主语you后面就加do。