一、 概念和用法:過(guò)去進(jìn)行時(shí)。
表示過(guò)去在某一時(shí)間段或某一段時(shí)間內(nèi)正在發(fā)生或進(jìn)行的動(dòng)作或狀態(tài)。其形式為 主語(yǔ)+was /were + 動(dòng)詞的現(xiàn)在分詞。常與表示過(guò)去的時(shí)間狀語(yǔ)連用,如:last night,last Saturday,yesterday等;或者與when,while,as引導(dǎo)的過(guò)去時(shí)間狀語(yǔ)連用。在英語(yǔ)時(shí)態(tài)中,“時(shí)“指動(dòng)作發(fā)生的時(shí)間,”態(tài)“指動(dòng)作的樣子和狀態(tài)。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?cè)诳措娨。What was he researching all day last Sunday? 上周日他一整天都在研究什么?時(shí)間段
二、 過(guò)去進(jìn)行時(shí)可以表示在過(guò)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(yǔ)、副詞或從句來(lái)表示。如:What was she doing at nine o‘clock yesterday? 昨天晚上九點(diǎn)她正在做什么? (介詞短語(yǔ)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(guò)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(guò)去進(jìn)行時(shí)的動(dòng)詞主要有:agree,be動(dòng)詞,believe,belong,care,forget,hate,have(擁有),hear,know,like,love,mean,mind,notice,own,remember,seem,suppose,understand,want,wish等。靜態(tài)動(dòng)詞 暫時(shí)性動(dòng)詞 同樣也不能用過(guò)去進(jìn)行時(shí)。
例如:錯(cuò)誤:I was knowing the answer.
正確:I knew the answer. 我知道答案。
錯(cuò)誤:I wasn‘t understanding him.
正確:I didn‘t understand him. 我不明白他的意思。