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過去進(jìn)行時態(tài)講解
過去進(jìn)行時
(一)定義
過去進(jìn)行時，是表示過去某個具體時刻正在進(jìn)行的事情或動作。
(二)結(jié)構(gòu)
was/were +doing (現(xiàn)在分詞)
(三)用法
1、過去進(jìn)行時表示過去某段時間內(nèi)持續(xù)進(jìn)行的動作或者事情。常用的時間狀語this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while等等
(1)We were watching TV from seven to nine last night.
昨天晚上七點(diǎn)到九點(diǎn)的時候我們在看電視。
(2)What was he researching all day last Sunday?
上周日他一整天都在研究什么?
(3)My brother fell while he was riding his bicycle and hurt himself. 我哥哥騎自行車的時候從車上摔下來，受傷了。
(4)It was raining when they left the station.
他們離開車站的時候天正在下雨。
(5)When I got to the top of the mountain, the sun was shining.
當(dāng)我到達(dá)山頂?shù)臅r候，陽光燦爛。
2. 過去進(jìn)行時可以表示在過去某個時間點(diǎn)發(fā)生的事情。時間點(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?第一文庫網(wǎng) (介詞短語表示時間點(diǎn))
When I saw him he was decorating his room.
當(dāng)我看見他的時候他正在裝飾房間。 (when從句表示時間點(diǎn))
3. 在復(fù)合句中，如果主要動作和背景動作都是延續(xù)的或同時發(fā)生的，那么主從句的動詞都可用過去進(jìn)行時。
While he was waiting for the bus, he was reading a newspaper.
他邊等車邊看報。 (兩個動作都是延續(xù)的)
He was cleaning his car while I was cooking.
他擦車時我在做飯。(兩個動作同時進(jìn)行)
4、表示在過去即將發(fā)生的動作。
She asked him whether he was coming back for supper.
5、表示過去的反復(fù)性或習(xí)慣性的動作，常與副詞always, constantly, continually, frequently等連用，常常帶有說話人的某種感情色彩。
His mother was always working like that.
他目前總是那樣工作
6. 通常不能用于過去進(jìn)行時的動詞主要有：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。
（四）句型
肯定句： 主語+was/ were+ doing+…
He was cooking at six last night.
否定句: 主語+was/ were +not(wasn’t/ weren’t) +doing+…..
He was not cooking at six last night.
一般疑問句: Was/Were +主語+ doing+….?
兩回答 肯：Yes, 主語+was/were 否：No,主語+wasn’t/ weren’t Was he cooking at six last night?
Yes ,he was No, he wasn’t.
特殊疑問句： 特殊疑問詞+一般疑問句
What was he doing at six last night?
when 和while的用法區(qū)別：
① when既指時間點(diǎn)，也可指一段時間，while只指一段時間，因此when引導(dǎo)的時間狀語從句中的動詞可以是終止性動詞，也可以是延續(xù)性動詞，而while從句中的動詞必須是延續(xù)性動詞。
② when 說明從句的動作和主句的動作可以是同時，也可以是先后發(fā)生；while 則強(qiáng)調(diào)主句的動作在從句動作的發(fā)生的過程中或主從句兩個動作同時發(fā)生。 ③ 由when引導(dǎo)的時間狀語從句，主句用過去進(jìn)行時，從句應(yīng)用一般過去時；如果從句和主句的動作同時發(fā)生，兩句都用過去進(jìn)行時的時候，多用while引導(dǎo)
When the teacher came in, we were talking.
當(dāng)此句改變主從句的位置時，則為：
While we were talking, the teacher came in.
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