我哥哥騎自行車的時(shí)候從車上摔下來，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，陽光燦爛。

　　2. 過去進(jìn)行時(shí)可以表示在過去某個(gè)時(shí)間點(diǎn)發(fā)生的事情。

　　時(shí)間點(diǎn)可以用介詞短語、副詞或從句來表示。例如：

　　What was she doing at nine o'clock yesterday?

　　昨天晚上九點(diǎn)她在做什么？(介詞短語表示時(shí)間點(diǎn))

　　She was doing her homework then.

　　那個(gè)時(shí)候她正在寫作業(yè)。（副詞表示時(shí)間點(diǎn)）

　　When I saw him he was decorating his room.

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

　　3.  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)詞都可用過去進(jìn)行時(shí)。

　　When 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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