2019年期末英語必考時(shí)態(tài)結(jié)構(gòu)之過去進(jìn)行時(shí)

　　過去進(jìn)行時(shí)

　　1. 概念：表示過去某段時(shí)間或某一時(shí)刻正在發(fā)生或進(jìn)行的行為或動(dòng)作。

　　My brother fell while he was riding his bicycle and hurt himself.

　　我兄弟騎車時(shí)摔了下來，受了傷。

　　When I got to the top of the mountain, the sun was shining.

　　我到達(dá)山頂時(shí)，陽光燦爛。

　　2. 時(shí)間狀語：at this time yesterday, at that time或以when引導(dǎo)的謂語動(dòng)詞是一般過去時(shí)的時(shí)間狀語等。

　　3. 基本結(jié)構(gòu)：was/were+doing

　　否定形式：was/were + not + doing.

　　一般疑問句：把was或were放于句首。

　　4. 用法

　　1) 過去進(jìn)行時(shí)表示過去某段時(shí)間內(nèi)持續(xù)進(jìn)行的動(dòng)作或者事情。

　　We were watching TV from seven to nine last night.

　　昨天晚上七點(diǎn)到九點(diǎn)的時(shí)候我們在看電視。

　　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。

　　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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