Unit 5What were you doing when the rainstorm came?,过去进行时 1.用法:过去进行时表示在过去某一时刻或某一段时间内正在进行的动作。 2.常用的时间状语:at that time/moment,( at ) this time yesterday/last night/Sunday/last week.,at+时刻+yesterday/last night/Sunday.,when sb.did sth.等。例如: I was doing my homework at this time yesterday.昨天的这个时候我正在做作业。 3.过去进行时的构成: ( 1 )肯定句:主语+was/were+doing+其他. ( 2 )否定句:主语+was/were+not+doing+其他. ( 3 )一般疑问句:Was/Were+主语+doing+其他? 简略回答:Yes,主语+was/were./No,主语+wasnt/werent. ( 4 )特殊疑问句:疑问词+was/were+主语+doing+其他.,4.while和when的
