簡(jiǎn)單語(yǔ)法學(xué)習(xí)-過(guò)去進(jìn)行時(shí)

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    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.