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過(guò)去進(jìn)行時(shí)主要用于:
表示過(guò)去某個(gè)時(shí)刻或階段正在進(jìn)行的動(dòng)作。
e.g. At that time she was working in a PLA unit.
那時(shí)她在解放軍某部工作。
What were you doing this time yesterday?
與這個(gè)時(shí)態(tài)連用的時(shí)間狀語(yǔ)常用:
at nine o`clock, this time last night, these days, at that time 等。
用 when 引導(dǎo)的時(shí)間狀語(yǔ)從句表示主句的動(dòng)作正在進(jìn)行的時(shí)間。
e.g. When he came in, I was reading a newspaper.
注:
1、while 引導(dǎo)時(shí)間狀語(yǔ)從句敘述過(guò)去的動(dòng)作時(shí),從句常用過(guò)去進(jìn)行時(shí)。
e.g. I read a magazine while I was waiting for the bus.
2、when 用作并列連詞,意為“這時(shí)”,連接兩分句時(shí),先進(jìn)句多用過(guò)去進(jìn)行時(shí)。
e.g. I was reading a newspaper when he came in.
一般過(guò)去時(shí)與過(guò)去進(jìn)行時(shí)的區(qū)別:
一般過(guò)去時(shí):強(qiáng)調(diào)過(guò)去某一時(shí)間開(kāi)始或完成的動(dòng)作。
過(guò)去進(jìn)行時(shí):強(qiáng)調(diào)過(guò)去某一時(shí)間正在進(jìn)行的動(dòng)作。
試區(qū)別下面兩句: We were building a reservoir last winter.
去年冬天我們?cè)谛藿ㄒ蛔畮?kù)。(可能尚未建成) We built a reservoir last winter.
去年冬天我們修建了一座水庫(kù)。(已經(jīng)建成)
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