過去進(jìn)行時(shí)表示過去某一時(shí)刻或某階段正在進(jìn)行的動作。

①過去進(jìn)行時(shí)由“was(第一、三人稱單數(shù))或were(第二人稱單數(shù)和各人稱的復(fù)數(shù))+現(xiàn)在分詞”構(gòu)成。

②過去進(jìn)行時(shí)的時(shí)間狀語有：then,at that time,this time yesterday,at(eight)yesterday(morning),(a year) ago,以及由when引出的時(shí)間狀語從句。如：He was cooking supper this time yesterday.(昨天這個(gè)時(shí)候他正在做晚飯)/The little girl was playing with her toy when I saw her.(我看到小女孩的時(shí)候她正在玩玩具)

③用于賓語從句或時(shí)間狀語從句中，表示與主句動作同時(shí)進(jìn)行而且是延續(xù)時(shí)間較長。句子中通常不用時(shí)間狀語。如：She was it happen when she was walking past.(她路過時(shí)看到事情的發(fā)生)/They sang a lot of songs while they were walking in the dark forest.(他們在黑暗的森林里走時(shí)唱了很多歌)

④也可以表示過去一個(gè)階段頻繁發(fā)生或反復(fù)進(jìn)行的動作，常與always等頻度副詞連用，以表示贊揚(yáng)、不滿或討厭等感情色彩。如：He was always borrowing money from me when he lived here.(他住在這里時(shí)老向我借錢)

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