The children were playing chess at 4:00 pm yesterday.
What were you doing at that time?
I was listening to the radio when Mother came back.
1樓的對的,我估計(jì)你們現(xiàn)在在學(xué)過去進(jìn)行時(shí)吧
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,be,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.
句型：
肯定句：主語+was/were+doing+其它
否定句：主語+was/were+not+doing+其它
一般疑問句及答語：Was/Were+主語+doing+其它
特殊疑問句：特殊疑問詞+was/were+主語+doing+其它