There used to be lots of old city walls in beijing 的反意疑问句
人气:246 ℃ 时间:2020-03-25 20:46:49
解答
There used to be lots of old city walls in beijing,usedn't there? 如果陈述句部分的谓语含有used to,其反问部分既可用use(d)n’t,也可用didn’t.例如: There used to be some trees in this field,use(d)n’t / didn’t there? You used to smoke a pipe,use(d)n’t / didn’t you?