11人教版六年级英语下册第二单元Last weekend教学视频 句型:询问在过去的某一个时间做了什么,借助助动词did l 特殊疑问句 What did you do yesterday / last weekend ? —— I did my homework . l 一般疑问句,把did提前, Did you help your parents clean the room ? (当句子变为一般疑问句,动词应还原成动词原形) —— Yes , I did ./No, I didn’t .