仁爱八上Unit3句型及现在进行时（共29张PPT)
3.I used to collect baseball cards.我过去常常收集棒球卡。used to do sth. 过去常常做某事（现在不做了）Eg: 我过去常常骑自行车去上班。I __________to work by bike.used to 的各种句式：否定句： sb. didn’t use to do sth. /     sb. usedn’t to do sth.Eg:他过去不常6:30之前起床He ___________get up before 6:30.He__________ get up before 6:30.
一般疑问句：Did sb. use to do sth. ? /答语： Yes, sb. did. No, sb. didn’t. / Used sb. to do sth. ?答语：Yes, sb. used. No, sb. usedn’t把下列句子改为否定句和一般疑问句，并作肯定和否定回答。My brother used to go swimming in the sea.否定句：My ...