B.过去进行时 1.过去进行时的构成 过去进行时是由“was / were +现在分词”构成的。 I was doing my homework at this time yesterday. 昨天的这个时候我正在做作业。 Were you expecting him yesterday? 你昨天一直在等他吗? They were not talking when I came in. 我进来的时候他们没在说话。 2. 过去进行时的用法 ①过去进行时的基本用法 a.表示在过去某一时刻正在发生的动作或该动作与过去的另一动作同时发生 I was having supper at 7:00 yesterday evening. 昨天晚上7点我正在吃晚饭。 She was playing the piano while I was reading the newspaper. 她弹钢琴时我在看报。 提示: 当句子意思很清楚时,我们也可以把两个动词都换成一般过去时。 We listened closely while the teacher read the text. |