at this time yesterday Jack(was reparing)his bike in the gar

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 08:51:05

at this time yesterday Jack(was reparing)his bike in the garden
so he(wasn't watching)TV then请告诉我为什么这么填请解释
Mary(tries)on shoes when she(buys)them控号中为什么填这个请解释

第一个句子中的时间状语是at this time yesterday 表示昨天的这个时候杰克正在花园里修补他的自行车,而不是在看电视...因此要用过去进行时（表示在过去的某个时刻正在做什么事）.还有过去进行时的否定形式是主语（he)+was/were+doing
第二个句子mary买鞋子的时候都会试穿,表示这是mary习惯性的动作,因此要用一般现在时

at this time yesterday Jack(was reparing)his bike in the gar This time yesterday Jack ______ his bike.He ______ TV He was riding a bike at this time yesterday. This time yesterday Jack's father was _______ （wash） his car Mr.Wang___a newspaper in the office at this time yesterday. he was -------at this time yesterday Jim was ___ at this time yesterday. 改被动语态He was doing his homework at this time yesterday . jack was doing his homework at that time He was mending his bike at that time.对mending his bike提问 my mother was washing the clothes at this time yesterday改为一般 I was playing the guitar at this time yesterday 对 playing th