新概念英語(yǔ)語(yǔ)法總結(jié)：過(guò)去進(jìn)行時(shí)

★這篇《新概念英語(yǔ)語(yǔ)法總結(jié)：過(guò)去進(jìn)行時(shí)》，是特地為大家整理的，希望對(duì)大家有所幫助！
    過(guò)去進(jìn)行時(shí)
    ——表示過(guò)去正在進(jìn)行的動(dòng)作，經(jīng)常用在when, while, as引導(dǎo)的狀語(yǔ)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(wèn)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.