weredoing是什么时态[朗读]

过去进行时。
were、was 是 be 动词的过去时，后加了doing 成为过去进行时。
例句：
vendors were doing a brisk trade in souvenirs
小贩们的纪念品生意很兴隆。
they were doing 70 miles an hour
他们每小时达到70英里。
扩展资料。
he said the protesters were doing a disservice to the nation
他表示，抗议者们的行为正对国家造成危害。
he should have been aware of what his junior officers were doing
他本该意识到自己部下在做什么？
they were doing just fine
他们做得很好。