英語語法總結：過去進行時

★以下是英語資源頻道為大家整理的《英語語法總結：過去進行時》，供大家參考。更多內容請看本站英語資源頻道。
    過去進行時
    ——表示過去正在進行的動作，經常用在when, while, as引導的狀語從句中。
    結構：was/were+doing
    When my husband was going into the dining room this morning, he dropped some coins on the floor.
    Their father was watching TV while they were having dinner.
    ★變疑問句將be動詞移到句首
    Was their father watching TV while they were having dinner.
    ★變否定句在be動詞后面加 not
    Their father was not watching TV while they were having dinner.