Unit2Topic3知识点总结英语八年级上册.doc

仁爱英语八上Unit 2 Keeping HealthyTopic 3 Must we exercise to prevent the flu?一、重点词组Section A 1. stay / keep away from 让.远离2. talk with / to sb. 与某人交谈3. ask sb. some questions 问某人一些问题4. go ahead 开始吧5. have the flu 得流感6. at once 立刻，马上7. build sb. up 增强体质8. take ones advice 听某人的意见9. keep the air fresh 保持空气清新 10. drink lots of boiled water 喝许多开水 11. take some medicine 吃药 12. keep away from crowded places 远离拥挤的地方 13. take some cold pills 吃些感冒药14. lie down and take a good rest 躺下好好休息15. brush your teeth twice a day 一天刷两次牙16. work on the Internet too long 上网太久17. eat hot food 吃辣的东西18. all the time 一直19. sore throat/ sore eyes 喉咙痛/眼睛痛Section B1. just a moment , please 等一会儿2. right now 现在3. ring sb. up 给某人打电话4. half an hour later 半小时后5. leave a message 留个口信6. take a message 捎个口信7. tell sb. (not) to do sth. 告诉某人（不）做某事8. need. to do sth 需要做某事9. by oneself 独自10. do some cleaning 打扫卫生11. be free 有空12. on time 13. ask sb.for help 求助某人14. with the help of. 在.的帮助下15. tell sb. about sth. 告诉某人某事Section C1. always be happy 总是保持开心2. give a talk 开讲座3. healthy eating habits 健康的饮食习惯 4. give sb.energy 给某人能量5. keep fit=keep healthy 保持健康6. stay safe 保证安全7. first aid 急救8. cause many illness 造成许多疾病9.on one hand. on the other hand. 一方面.另一方面.10. say no to. 对.说不Section D1. warm up 热身2. stretch your legs and arms 伸展腿和胳膊3. get your body moving 让你的身体动起来4. instead of 代替，而不是5. take an active part in 积极参加6. keep cool 保持凉爽7. hurt oneself 伤了自己 8二、重点句型1. May I ask you some questions, Dr. Li? Sure, go ahead.解析：(1) May I do sth.? 我可以做.吗？ 用于提出请求。(2) go ahead “开始做，着手干”。 ahead adv. 在前面 （ahead of time 提前 ）2. What should we do to prevent it?解析：prevent v.预防，防止 prevent sth. 预防/阻止.prevent sb./sth. (from) doing sth. 阻止某人/某物(做)某事例：雨伞可以挡住阳光和雨。 _Umbrella can prevent sun and rain. Tom的父母尽力阻止他玩电脑游戏。 Tom parents tried their best to prevent him playing computer games. Could you give us some advice on preventing the flu? 你能为我们预防流感提些建议吗？3. We should keep our rooms clean and the air fresh all the time.解析：(1)keep +宾语+宾补 “让某人/某物.” _keep sb. doing sth._ (使某人一直做某事 )例：他让我等了两个小时 He keeps me _waiting for two hours. _keep sb./sth.+adj._ (表示某人/某事物保持怎样的状态)例：我们本应该留长指甲。 We should not keep our fingernails long. (2) all the time “一直，始终”，在句中做时间状语。她一直在哭：_She kept crying all the time._4. Finally, we should keep away from crowded places.解析：(1) finally adv.“最后，最终，终于”，一般放在句首，用逗号和主句隔开，用于修饰整个句子。 (2) keep away from. = stay away from. “远离.”，后面加名词、代词或动名词。例：最后，他终于说了实话。 Finally，he told the truth.作为学生，我们应该远离烟酒。As students ,we should keep away from smoking and drinking. 你最好让孩子离火远点。 Youd better keep the child away from the fire. 5. Must we go to see a doctor at once when we have the flu?解析：(1) at once = right now 立刻，马上(2) must “必须”，为情态动词，不能单独做谓语，后面必须加_动词原形_一起构成谓语。否定式mustnt 意为“_不准_” 以must提问时，肯定回答用 must , 否定回答用 neednt 或 dont have to 注意：用dont have to 回答时，有人称和数的变化。 例：-我们必须8点去那里吗？ _Must we go there at 8 oclock?_ -是的，必须。/不，不必。 _Yes, you must. / No, you neednt/dont have to._ -他必须来这儿吗？ _Must he come here?_ -是的，必须来。/不，不必来。_Yes, he must. / No, he neednt/doesnt have to._6. Could I speak to Dr. Li Yuping?解析：这是打电话的常用句型，意为“请让.接电话好吗？”。同义句为：“May I speak to., please?”回答：如果要找的人在，常说：Hold on, please. / Wait a moment, please.（请稍等） 如果要找的人不在，常说：Im afraid/ Im sorry he isnt in now.7. Please tell my father not to forget the talk tomorrow afternoon。解析：(1) tell sb.(not) to do sth. 告诉某人（不）做某事 类似结构还有：ask sb.(not) to do sth. 请求某人（不）做某事 order sb.(not) to do sth. 命令某人（不）做某事。 (2) talk n. 报告，谈话（give a talk 做报告/ have a talk with sb. 和某人谈一谈） v. 谈话（talk with sb. 与某人谈话 talk about sth. 谈论某事）8. I will give him the message myself.解析：(1) 反身代词：表示自身。第一人称：myself 我自己 ， ourselves 我们自己 第二人称：yourself 你自己 ，yourselves 你们自己 第三人称：himself 他自己，herself她自己，itself它自己 ， themselves 他们自己 (2) 反身代词在实际运用中有许多固定词组。如：by oneself （亲自）、for oneself （为了自己）、help oneself to（随便吃）、make oneself （别拘束）、enjoy oneself （玩得开心）例：别伤着你自己。 _Dont hurt yourself._他们昨天玩得很开心。 _They enjoyed themselves yesterday._9. So dont go to school without breakfast. 因此要不吃早餐上学。10. So eat the right food to keep you healthy. 因此合理饮食才能保持健康。11.Happiness is important for your health. 快乐对你们的健康很重要。12.Be happy to be healthy. 想健康就得快乐。13.You may feel ill if you are always unhappy. 如果你们总是不开心，你们可能会不舒服。解析：此句是主从复合句，从句是if 引导的条件状语从句。遵循“主将从现、主祈从现、主情从现”的原则。这句话是主句用情态动词。 例：当我们受伤的时候，应该停止锻炼。 We should stop exercising when we are hurt. 如果你明天来，我们就一起去购物。_We will go shopping if you come tomorrow._ 如果你不喜欢棒球，就不要加入棒球队了。 Dont join the baseball team if you dont like it. 14. The more exercise, the better.解析：the +比较级+. , the +比较级+. “越.越.” the sooner, the better 越快越好