包邮剑桥初级英语语法练习-(第三版中文版)

致学生 vii致老师 vii1-5 am/is/are6?c9 i am doing（现在进行时）10?c14 i do/work/like（一般现在时）15?c19 i am doing and i do（现在进行时与一般现在时比较）20?c21 have got22?c29 was/were and i worked/got/went（一般过去时）30?c32 i was doing and i did（过去进行时与一般过去时比较）33?c35 i do / i am doing and i did / i was doing（一般现在时、现在进行时、一般过去时与过去进行时）36?c39 i have done（现在完成时）40?c43 how long have you … ?（现在完成时的疑问句）44?c49 i have done and i did（现在完成时与一般过去时比较）50?c52 i do / i have done / i did（一般现在时、现在完成时与一般过去时）53?c57 is done / was done and is being done / has been done（被动语态）58?c60 be/have/do and regular/irregular verbs（动词形式）61?c63 what are you doing tomorrow?（现在时表示将来）64?c66 i’m going to do67?c70 will/shall71?c74 i am doing / i am going to do / i’ll do（将来时）75?c76 might77?c80 can and could81?c82 must mustn’t don’t need to83?c85 should86?c87 i have to88?c90 do this! don’t do that! let’s do this!91?c92 i used to......