第一人称：一般现在时用do ,一般过去时用did 第2人称：一般现在时用do ,一般过去时用did 第2人称：一般现在时用does ,一般过去时用did 再问： 哦 举个例子 再答： I have a book —— Do you have a book？ I had a book —— Did you have a book？ He has a book —— Does he have a book？ He had a book —— Did he have a book？ 再问： 都用一般现在时 再答： 第二第四是一般过去时 再问： 再等等别人回答吧 再答： Up to you！
