英語語法總結(jié)：過去進(jìn)行時(shí)

★以下是英語資源頻道為大家整理的《英語語法總結(jié)：過去進(jìn)行時(shí)》，供大家參考。更多內(nèi)容請看本站英語資源頻道。
    過去進(jìn)行時(shí)
    ——表示過去正在進(jìn)行的動(dòng)作，經(jīng)常用在when, while, as引導(dǎo)的狀語從句中。
    結(jié)構(gòu)：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(dòng)詞移到句首
    Was their father watching TV while they were having dinner.
    ★變否定句在be動(dòng)詞后面加 not
    Their father was not watching TV while they were having dinner.