06 过去进行时 was/were + 现在分词
过去进行时表示在过去某一时刻或一段时间正在进行的动作。
一、构成
was/were + 现在分词(动词的-ing 形式)
当主语是 I 以及第三人称单数时,用 was。
I was reading a book at eight o'clock last night.(昨晚八点我正在读书。)
He was playing basketball at that time.(那时他正在打篮球。)
当主语是第二人称及第一、三人称复数时,用 were。
You were watching TV when I came in.(我进来的时候你正在看电视。)
They were having a meeting yesterday afternoon.(昨天下午他们正在开会。)
二、用法
1. 表示过去某一时刻正在进行的动作。
What were you doing at nine o'clock last night?(昨晚九点你在做什么?)
She was singing a song when he entered the room.(他进入房间的时候她正在唱歌。)
2. 表示过去某一段时间内一直在进行的动作。
They were building a house last month.(上个月他们一直在建造一座房子。)
3. 常与表示过去的时间状语连用,如 at that time(在那时)、at this time yesterday(昨天这个时候)、from...to...(从……到……)等。
三、句式变化
1. 否定句:在 was/were 后加 not。
I was not sleeping at midnight.(午夜我没在睡觉。)
They weren't working from nine to eleven.(从九点到十一点他们没在工作。)
2. 一般疑问句:将 was/were 提到句首。
Were you reading at that time?(那时你在读书吗?)
Was he playing football yesterday afternoon?(昨天下午他在踢足球吗?)
3. 特殊疑问句:特殊疑问词 + was/were + 主语 + 现在分词 + …?
What were you doing at seven o'clock yesterday morning?(昨天早上七点你在做什么?)
Where was she singing at this time yesterday?(昨天这个时候她在哪里唱歌?)