7、opdoingsth.停止做某事,stoptodosth.停下来去做某事二、语法知识点1.过去进行时(重点语法)a)过去进行时由“was/were+动词ing形式”构成。以动词work为列,其肯定式,否定式,疑问式以及简略答语见下表:肯定式:I/He/She/It was working. We/You/ They were working.否定式:I/He/She/It was not working. We/You/They were not working.疑问式和简略答语:Was I work
8、ing? Yes, you were. Was he working? No, he wasn’t.【注意】was not常简略为wasn’t; were not常简略为weren’tb)过去进行时的用法:过去进行时表示过去某一时刻或某一段时间正在进行的动作。这一特定的过去时间,除有上,下文暗示以外,一般用时间状语来表示过去进行时的标志词:at8o’clocklastnight,thistimeyester