仁爱科普版八上英语Unit 2 Topic3 Must we exercise to prevent the flu Section B 同步练习（含答案）

Topic3 Must we exercise to prevent the flu Section B同步练习 一、词汇练习 1. 写出下列单词的中文意思 prevent _____ flu _____ talk _____ camera _____ relax _____ finish _____ free _____ busy _____ 2. 根据中文提示写出单词 必须 （must） _____ 我们 （we） _____ 锻炼 （exercise） _____ 忘记 （forget） _____ 自己 （oneself） _____ 3. 用所给单词的适当形式填空 You should do more exercise to keep _____ (health). It's necessary for us _____ (wash) hands often. We must prevent children from _____ (play) with fire. The doctor advised me _____ (eat) more vegetables. 二、语法练习 1. 选择题 (1) You _____ watch TV too much. It's bad for your eyes. A. shouldn't B. mustn't C. needn't (2) You _____ do your homework first. A. should B. must C. have to (3) I did my homework, but I _____ finish it by myself. A. couldn't B. can't C. shouldn't (4) —Is Dad free today —I'm afraid he is _____. A. busy B. free C. OK (5) You _____ do it yourself first. A. had better B. would rather C. have to 2. 按要求完成句子 (1) We must exercise to prevent the flu. （改为一般疑问句） _____ we exercise to prevent the flu (2) You should take your camera. （改为否定句） You _____ take your camera. (3) He can finish the work by himself. （改为否定句） He _____ finish the work by himself. (4) Must I do my homework now （作否定回答） No, you _____. (5) You had better stay at home. （改为否定句） You had better _____ stay at home. 三、阅读理解 阅读下面的短文，然后回答问题。 Kangkang's father is going to give a talk about how to prevent the flu. Everyone in the class is very excited. They all want to know how to keep healthy. Kangkang's father tells them that they should wash their hands often, keep the room clean and do more exercise. They should also eat healthy food and get enough sleep. After the talk, the students know a lot about keeping healthy. 1. What is Kangkang's father going to do 2. Why is everyone in the class excited 3. What should they do to keep healthy 四、写作练习 请根据以下提示，写一篇关于如何保持健康的短文，不少于 60 词。 提示： 1. 经常锻炼，如跑步、游泳等。 2. 保持均衡饮食，多吃蔬菜和水果。 3. 早睡早起，保证充足的睡眠。 答案和解析： 词汇练习 1. 1. prevent 2. crowded 3. journalist 4. at once 5. enough 1. 2. ourselves 2. crowded 3. clean 4. fresher 5. not go 解析：1. build oneself up为固定搭配，意为“增强某人的体质”，这里用we的反身代词ourselves。2. 房间应是拥挤的，crowd的形容词形式为crowded。3. keep +宾语+形容词，表示“使……保持某种状态”，故用clean。4. 由than可知用比较级，fresh的比较级为fresher。5. had better not do sth. 意为“最好不要做某事”。 短语练习 1. 1. build up 2. all the time 3. keep away from 4. go to see a doctor at once 5. enough water 1. 2. 远离 2. 行，开始做 3. 采纳某人的建议 4. 一直 5. 患流感 解析：这些都是本单元的重点短语，需牢记其含义和用法，在平时的学习中多积累、多运用，以达到熟练掌握的程度。 句子练习 1. 1. Must；exercise 2. needn't 3. What should；do 4. Don't go 解析：1. 含有must的一般疑问句，将must提前即可。2. must的否定回答用needn't或don't have to。3. ... ...