求过去式did的用法,

问题描述:

求过去式did的用法,

did 是一个助动词,也是do的过去式,请看下面的例句:1.A:Did you go to the park yesterday?作天你是不是去公园了?B:Yes,I did.(No,I did not) 是的,我去了.( 没有,我没去.)2.I did a lot of work last night.昨晚...