Did you use to eat sweet when u were are a child?过去常常应该是used to 这里是use 还是 used
问题描述:
Did you use to eat sweet when u were are a child?过去常常应该是used to
这里是use 还是 used
答
疑问句助动词提前了句子里的谓语动词就用原形了呀