文档介绍：1基本概念编辑
过去进行时(Past continuous tense或Past Progressive tense)表示过去某时某刻正在进行的动作(不强调是否完成)。(过去进行时具体用在什么地方,看下面的内容)
具体概念
一、概念和用法:过去进行时
表示在过去某一时刻或某一段时间内进行或发生的动作。其形式为was /were + V-ing。常与表示过去的时间状语连用,如:last night,last Saturday等;或者与when,while,as引导的过去时间状语连用。例如:We were watching TV from seven to nine last night. 昨天晚上七点到九点的时候我们在看电视。What was he researching all day last Sunday? 上周日他一整天都在研究什么?
二、过去进行时可以表示在过去某个时间点发生的事情。时间点可以用介词短语、副词或从句来表示。如:What was she doing at nine o‘clock yesterday? 昨天晚上九点她在做什么? (介词短语表示时间点) When I saw him he was decorating his room. 当我看见他的时候他正在装饰房间。(when从句表示时间点)
三、在复合句中,如果主要动作和背景动作都是延续的或同时发生的,那么主从句的动词都可用过去进行时。例如:While he was waiting for the bus,he was reading a 。(两个动作都是延续的) He was cleaning his car while I was cooking. 他擦车时我在做饭。(两个动作同时进行)
四、通常不能用于过去进行时的动词主要有:agree,is,am,are,believe,belong,care,forget,hate,have(拥有),hear,know,like,love,mean,mind,notice,own,remember,seem,suppose,understand,want,wish等。
例如:误:I was knowing the answer.
正:I knew the answer. 我知道答案。
误:I wasn‘t understanding him.
正:I didn‘t understand him. 我不明白他的意思。
2结构组成编辑
1. 过去进行时由“主语+was/were + 动词ing”构成
EX: We were having supper when the phone rang. 我们正在吃晚饭时电话响了。
2. 过去进行时的否定式由“主语+was/were not +现在分词”构成
EX: This time yesterday Jack was not watching TV. He was repairing his bike. 昨天这个时候,杰克不是在看电视,而是在修理自行车。
3. 过去进行时的疑问式由“was/were +主语+ 现在分词”组成
EX: Were you playing basketball at four yesterday