weredoing是什麼時態[朗讀]

過去進行時。
were、was 是 be 動詞的過去時，後加了doing 成為過去進行時。
例句：
vendors were doing a brisk trade in souvenirs
小販們的紀念品生意很興隆。
they were doing 70 miles an hour
他們每小時達到70英里。
擴展資料。
he said the protesters were doing a disservice to the nation
他表示，抗議者們的行為正對國家造成危害。
he should have been aware of what his junior officers were doing
他本該意識到自己部下在做什麼？
they were doing just fine
他們做得很好。