一、过去进行时的定义

过去进行时主要表示过去某一时刻正在进行的动作，或表示过去某一阶段一直在进行的动作。如：

I was having a talk with Li Hua at that time. 那时，我正在跟李华谈话。

I was watching TV at home last night. 昨晚我一直在看电视。

二、如何理解过去进行时：

三、过去进行的构成

过去进行时由“was / were + 现在分词”构成。如：

Someone is knocking the door. 有人在敲门。

Steam was rising from the coffee. 咖啡冒着热气。

Clouds were flying across the sky. 云彩飘过天空。

注意有些was (were) doing sth不是现在进行时，而是系表结构，其中的doing sth是动名词，不是现在分词。如：

Her job was washing clothes. 她的工作是洗衣裳。

Her hobby was growing roses. 她的爱好是种植玫瑰。

Her suggestion was having our conversation in French. 她的建议是我们用法语交谈。

四、过去进行时的主要用法

1. 表示在过去某一点时间或某一段时正在进行的动作。如：

I was having a bath when the phone rang. 我正在洗澡，突然电话铃响了。

She was writing letters. I didn’t want to disturb her. 她在写信。我不想打扰她。

2. 表示在过去短期内正在进行的动作或存在的情况，这种情况通常不会长期如此。如：

It happened while I was living in Eastboume last year. 这件事发生于去年我住在伊斯特本的时候。

3. 表示为过去的将来安排好的活动和事件。这类用法在没有明确上下文的情况下，通常会连用一个表示将来时间的状语。如：

He said that his sister was getting married next December. 他说他妹妹12月结婚。

用arrive, come, go, leave等动词的现在进行时描写行程安排，也通常有含有将来意义。如：

Four of them were coming for Sunday lunch. 他们有四个人将在星期天来吃午饭。

Her daughter was going to a summer camp the following day. 她的女儿将在第二天去参加夏令营。

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