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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 l...
用动词的适当形式填空。 1. While we __________ (wait) for the bus, a girl __________ (run) up to us. 2. I __________ (telephone) a friend when Bob __________ (come) in. 3. Jim __________ (jump) on the bus as it __________ (move) a...
2. 过去进行时的结构及句型变化 过去进行时由was / were + 现在分词构成。如: I was doing my lessons then. 那时,我在做功课。 We were cleaning the house. 我们在打扫房子。 过去将来时态的肯定句...