Dentists always ask questions when it isimpossible for you to answer. My dentist hadjust pulled out one of my teeth and had told meto rest for a while. I tried to say something, butmy mouth was full of cotton wool. He knew Icollected match boxes and asked me whether mycollection was growing. He then asked me how mybrother was and whether I liked my new job inLondon. In answer to these questions I eithernodded or made strange noises. Meanwhile, mytongue was busy searching out the hole where the tooth had been. I suddenly felt very worried,but could not say anything. When the dentist at last removed the cotton wool from mymouth, I was able to tell him that he had pulled out the wrong tooth.
精讲笔记：
1. Dentists always ask questions when it is impossible for you to answer.
牙科医生们总是在你无法作出回答的时候向你提出问题。
真题测试 测试语言点：状语从句
I was halfway back to the cottage where my mother lived___Susan caught up with me. (2001年1月 CET4,第68题)
A. though B. until C. when D. while
答案：选C
分析：本题考查状语从句的用法。根据句意，A和B两项不合适;D选项多用在表示持续性的动作或状态的句子中;C项when,既可以和延续性动词连用，也可以和瞬间性动词连用，既可以表示从句和主句动作同时发生，也可表示主句动作在从句之后或之前发生所以入选。
翻译：苏珊追上我的肘候，我正在回我妈妈住的小屋的途中。
2. My dentist had just pulled out one of my teeth and had told me to rest for a while.
我的牙科医生刚刚给我拔掉了一颗牙，叫我休息一会儿。
真题测试 测试语言点：just的位置与过去完成时
We___ our breakfast when an old man came to the door. (1990年1月CET-4，第53题)
A. just have had B. have just had C. just had D. had just had
答案：选D
分析：just一词的位置一般在助动词之后，A和C明显错误。B为现在完成时与时间状语从句的过去时不符合，因此D选项是正确答案。
翻译：当一个老人进门的时候，我们刚好吃完早饭。
3. I tried to say something, but my mouth was full of cotton wool.
我想说点什么，但我嘴里塞满了药棉。
