书名：azar蓝色文法书 版本：第三版 页数：p.29 第七题 题目： I got a packet in the mail. When I (open) ____ it, I (find) ____ a suprise. 疑问： 为什麽答案是 opened/found 而不是 was opening/found 不是先打开後来才惊讶吗? 页数：p.29 第十题 题目： A: Did you hear what she said? B: No, I (listen not) ____. I (think)____ about something else. 疑问： 答案是 wasn't listening/wasn't thinking 而不是 didn't listen/was thinking 页数：p.33 第四题 题目： 改错 Yuki staied home because she catched a bad cold. 疑问： 答案是 Yuki stayed home because she caught/had caught a bad cold. 在这边caught跟had caught有什麽不同的意思吗? 页数：p.33 第八题 题目： 改错 I rewinded the rented video before I return it to the store yesterday. 疑问： 答案是I rewound the rented video before I returned it to the store yesterday. 为什麽不是was rewinding 页数：p.33 第十一题 题目： 改错 Yesterday I was working at my computer when Shelly was coming to the door of my office. I wasn't knowing she was there. I was concerntrate hard on my work. When she suddenly speak, I am jump. She startle me. 疑问：答案是 Yesterday I was working at my computer when Shelly came to the door of my office. I didn't know she was there. I was concerntrating hard on my work. When she suddenly spoke, I jumped. She startled me. speak 改成 spoke 而不是 speaking是因为它发生在前面的动作之後，但是 jump是发生在speak後面，为什麽speak不用加ing? 页数：p.36 第五题 题目： Try not to be absent from class again for the rest of the term. You (miss,already) ____ too many classes. You (miss) ____ two classes just last week. 疑问：答案是 have already missed/missed 为什麽不是 have already missed/have missed 页数：p.37 第十一题 题目： Last January , I (see) ____ snow for the first time in my life. 疑问：答案是 saw 为什麽不是 have seen???? 什麽时候要用过去式?? 什麽时候要用现在完成式??? --

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