■现在进行时

1. —I’m not finished with my dinner yet.

—But our friends ________ for us. (2010北京卷)

A. will wait                    B. wait                        C. have waited            D. are waiting

【解析】D。根据句首的but可知，选现在进行时比较符合语境。对话的意思是：“我还有没吃完饭。”“但是我们的朋友在等我们了。”

■过去进行时

1. I walked slowly through the market, where people ________ all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed. (2010湖南卷)

A. sell                            B. were selling            C. had sold                  D. have sold

【解析】B。根据句中的walked, studied, bought等可知，句子是在谈论过去的情况，故可排除A和D。再根据句意，联系“慢慢走过集市”“仔细研究价格”“买下需要的东西”等信息，说明当时人们是“正在”卖水果和蔬菜，故用过去进行时。

2. —Have you finished reading Jane Eyre?

—No, I ________ my homework all day yesterday. (2010全国卷I)

A. was doing                  B. would do                C. had done                  D. do

【解析】A。根据句中的all day和yesterday可知，句子应用过去进行时。又如：“Have you finished your homework, Mary?” “No, I was helping my mother in the kitchen all day yesterday.” “你的作业做完了吗，玛丽?”“没有，我昨天一整天都在厨房帮妈妈干活来着。”

■将来进行时

1. If you plant watermelon seeds in the spring, you ________ fresh watermelon in the fall. (2010浙江卷)

A. eat                             B. would eat               C. have eaten               D. will be eating

【解析】D。由于条件状语从句用的是一般现在时，所以主句应该用将来时态，由此可排除A和C；而B为过去将来时，是指在过去看来将来发生的情况，与句意不符。故选D。will be eating为将来进行时，指将来要进行的情况，句意为：如果在春天播下西瓜种子，秋天你就可吃到新鲜的西瓜。

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