過去進(jìn)行時(shí)的概念

一、 概念和用法：過去進(jìn)行時(shí)

表示在過去某一時(shí)刻或某一段時(shí)間內(nèi)進(jìn)行或發(fā)生的動(dòng)作。其形式為was /were + V-ing。常與表示過去的時(shí)間狀語連用，如：last night,last Saturday等;或者與when,while,as引導(dǎo)的過去時(shí)間狀語連用。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)候我們在看電視。What was he researching all day last Sunday? 上周日他一整天都在研究什么?

二、 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。

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)) 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))

三、 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)。

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)

四、 通常不能用于過去進(jìn)行時(shí)的動(dòng)詞主要有

：agree,is,am,are,believe,belong,care,forget,hate,have(擁有)，hear,know,like,love,mean,mind,notice,own,remember,seem,suppose,understand,want,wish等。

例如：誤：I was knowing the answer.

正：I knew the answer. 我知道答案。

誤：I wasn‘t understanding him.

正：I didn‘t understand him. 我不明白他的意思。

二、過去進(jìn)行時(shí)的結(jié)構(gòu)

1. 過去進(jìn)行時(shí)由“主語+was/were + 動(dòng)詞ing”構(gòu)成

EX： We were having supper when the phone rang. 我們正在吃晚飯時(shí)電話響了。

2. 過去進(jìn)行時(shí)的否定式由“主語+was/were not +現(xiàn)在分詞”構(gòu)成

EX： This time yesterday Jack was not watching TV. He was repairing his bike.

昨天這個(gè)時(shí)候，杰克不是在看電視，而是在修理自行車。

3. 過去進(jìn)行時(shí)的疑問式由“was/were +主語+ 現(xiàn)在分詞”組成

EX： Were you playing basketball at four yesterday afternoon? 昨天下午四點(diǎn)你們在打籃球?

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