過(guò)去進(jìn)行時(shí)語(yǔ)法詳解

（1）定義：

過(guò)去進(jìn)行時(shí)，是表示過(guò)去某個(gè)具體時(shí)刻正在進(jìn)行的事情或動(dòng)作。

（2）結(jié)構(gòu)：was/were +doing (現(xiàn)在分詞）

（3）用法：

① 過(guò)去進(jìn)行時(shí)表示過(guò)去某段時(shí)間內(nèi)持續(xù)進(jìn)行的動(dòng)作或者事情。常用的時(shí)間狀語(yǔ)this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while例如：

We were watching TV from seven to nine last night.昨天晚上七點(diǎn)到九點(diǎn)的時(shí)候我們?cè)诳措娨暋?/p>

What was he researching all day last Sunday?上周日他一整天都在研究什么?

My brother fell while he was riding his bicycle and hurt himself.我哥哥騎自行車的時(shí)候從車上摔下來(lái)，受傷了。

It was raining when they left the station.他們離開車站的時(shí)候天正在下雨。

When I got to the top of the mountain, the sun was shining.當(dāng)我到達(dá)山頂?shù)臅r(shí)候，陽(yáng)光燦爛。

② 過(guò)去進(jìn)行時(shí)可以表示在過(guò)去某個(gè)時(shí)間點(diǎn)發(fā)生的事情。時(shí)間點(diǎn)可以用介詞短語(yǔ).副詞或從句來(lái)表示。如：

What was she doing at nine o'clock yesterday?昨天晚上九點(diǎn)她在做什么?(介詞短語(yǔ)表示時(shí)間點(diǎn))

When I saw him he was decorating his room.

當(dāng)我看見(jiàn)他的時(shí)候他正在裝飾房間。(when從句表示時(shí)間點(diǎn))

➂ 在復(fù)合句中，如果主要?jiǎng)幼骱捅尘皠?dòng)作都是延續(xù)的或同時(shí)發(fā)生的，那么主從句的動(dòng)詞都可用過(guò)去進(jìn)行時(shí)。

例如：

While he was waiting for the bus, he was reading a newspaper.他邊等車邊看報(bào)。(兩個(gè)動(dòng)作都是延續(xù)的)

He was cleaning his car while I was cooking.他擦車時(shí)我在做飯。(兩個(gè)動(dòng)作同時(shí)進(jìn)行)

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