您好,did跟do的过去式,用法跟do一样
1.作为行为动词,跟其他动词一样,如study, play等.l他的意思是“做”等.如： We usually do our homework in the afternoon. He does his homework in the evening
2.作为助动词
1）构成一般疑问句,例如： Do you want to pass the CET? 你想通过大学英语测试吗? Did you study German? 你们学过德语吗?
2）do +not 构成否定句,例如： I do not want to be criticized. 我不想挨批评. He doesn't like to study. 他不想学习. In the past,many students did not know the importance of English. 过去,好多学生不知道英语的重要性.
3) 构成否定祈使句,例如：Don't go there. 不要去那里. Don't be so absent-minded. 不要这么心不在焉.说明：构成否定祈使句只用do,不用did和does
4）放在动词原形前,加强该动词的语气,例如：Do come to my birthday party. 一定来参加我的生日宴会. I did go there. 我确实去那儿了.l do miss you. 我确实想你.
5）用作代动词,例如： ----Do you like Beijing? --你喜欢北京吗? ----Yes,I do. --是的,喜欢.（do用作代动词,代替like Beijing.） He knows how to drive a car,doesn't he? 他知道如何开车,对吧?