1、Unit5 Grammar 预习检测单项选择1. We should care more about our health _ good health is the first step towards success.A. so B. because C. but D. if2. Wang Dong didnt go to school yesterday _ he was ill. A. so B. if C. because3. Some of the students are nearsighted _ they spend too much time watching TV or p
2、laying online games. A. when B. though C. because D. unless4. _ everyone is here, lets begin our meeting. A. Though B. Since C. Before D. So5. _ Daniel can draw very well, he will design the posters for the show. A. Although B. When C. As soon as D. As6. What shall we do now?_ its raining hard, lets
3、 stay at home.A. So B. Since C. Though D. If 7. We can talk with friends on the Internet _ its easier and cheaper.A. though B. as C. or D. but 参考答案及解析1. B 句意：我们应该更多地关心我们的健康，因为身体健康是走向成功的第一步。so 意为“所以” ；because 意为“因为” ；but 意为“但是” ，表转折；if 意为“如果，即使” 。2. C 句意：昨天王东没有去上学，因为他生病了。表示原因，用 because。3. C 句意：一些学生近视
4、是因为他们花费太多的时间看电视或者玩网络游戏。when 意为“ 当时” ；though 意为“虽然，尽管” ；because 意为“因为” ；unless 意为“除非” 。4. B 句意：既然大家都来了，咱们开始开会吧。since 意为“既然” ，符合句意。5. D 句意：因为丹尼尔绘画很好，所以他将设计演出的海报。as 有“因为”的意思，符合句意。6. B 答句句意：由于正在下大雨，我们待在家吧。since 意为“既然，由于” ，符合句意。if 引导的是条件状语从句，不符合题意。7. B 句意：我们可以在网上与朋友们聊天，因为它既容易又便宜。as 用作连词可以表原因；though 意为“虽然” ，or 意为“否则 ”，but 意为“但是” ，都不符合句意。
