2017年职称英语卫生类重点词汇（4）

主要并列连词的用法
　　1 and: 意为“和，而且”，表示同等关系或递进关系
　　1>. I went there by train and she went there by plane. 我乘火车去那里的，她乘飞机去那里的。
　　2>. Her father is a doctor and her mother is a teacher. 她父亲是医生，她母亲是教师。
　　3>. Tom finished his homework, and they went out to play games. 汤姆做完了作业，他们就出去玩游戏了。
　　2 but: 意为“但是”，表示转折关系。
　　1>. She is very old but she is in good health. 她年纪很大了，但身体很好。
　　2>. He is poor, but he is happy. 他穷，但是他幸福。
　　3>. The man shouted to the policemen, but they didn't hear him.
　　4>. Some people don't like summer, but I quite like it. 有些人不喜欢夏天，但是我很喜欢。
　　3 or: 意为“或者，否则”，表示选择关系。
　　1>. Are you going with us or will you stay at home? 你同我们一起去，还是呆在家里呢?
　　2>. The students can go swimming or they can go mountain climbing.
　　学生们可以去游泳，也可以去爬山。
　　3>. You'd better go by taxi, or you will be late. 你最好乘出租车去，否则要迟到了。
　　4 for:表示“因为，表示因果关系”。是“前果后因”。
　　1>. He is late for class every day, for he gets up late every day.
　　2>. We passed the exam, for we studied very hard.
　　5. so: 因此，也表示因果关系，是“前因后果。”
　　1>. He gets up late every day, so he I slate for school every day.
　　2>. We studied very hard, so we passed the exam.
　　6. not only...but also意为“不但……而且”，表示同等关系。
　　1>. Not only can he drive a car, but he can also repair cars. 他不但会开车，而且还会修车。
　　2>. He was not only a good father, but he was also a good husband. 他不仅是个好父亲，也是个好丈夫。
　　7. either...or意为“不是……就是，或者……或者”，表示选择关系
　　1>. You can either do it by yourself or you can ask someone else to do it.
　　你或者自己做这件事，或者请别人做这件事。
　　2>. Either the teacher didn't explain the sentence clearly, or I didn't understand it.
　　不是老师没有把这个句子解释清楚，就是我没有理解。
　　P>　　Only when he is seriously ill, does he ever stay in bed. 他只有病得非常严重时才会卧床休息。职称英语考试