八年级英语上册学案Unit 1 How often do you exercise？Section A一、教师寄语 A bold attempt is half success.（勇敢的尝试是成功的一半）二、学习目标知识目标：Words: always, usually , often, sometimes , hardly , ever, never., once , twice , Phrases: how often three times a week every day. twice a weekSentences: What do you usually do on weekends? I sometimes go to the beach.How often do you eat vegetables? Every day.Most students do homework every day.能力目标: 会使用频率副词及短语；能描述课余时间的活动安排；情感目标: 培养学生良好的学习和生活习惯三、教学重、难点频度副词：always,usually,often,sometimes,hardly和never的应用 疑问词how的用法四、学习过程1预习导学或自测.Look at the picture (学生识图).What do you usually do on weekends? I sometimes go to the beach.I sometimes skateboard 去滑板看书 read books 看电视 watch TV 做运动 exercise 购物 shop . 看图写出相应的頻度副词：_ _ _ _ _2自主学习Pairwork. How often do you eat vegetables? Every day.ActivitiesHow ofena. go to the moviesEvery dayb. watch TVOnce a weekc. shopTwice a weekd. exerciseThree times a weeke.readOnce a weekTwice a week 3合作探究.maybe / may be .The baby is crying. Maybe she is hungry.The woman may be a teacher .maybe 是副词，意为“大概， 可能，或许”，一般用于句首。May be是情态动词，意为“可能是.，也许是.，大概是.”.、a few / few / a little / little . people can live to 100,but people can live to 150. There is time left, I dont catch the first bus. Could you give me milk?a few (少数的，几个，一些)a little (一点儿，少量)表示肯定few (很少的，几乎没有的) little (很少的，几乎没有的)表示否定修饰可数名词修饰不可数名词、hard / hardly . The ground is too to dig. I can understand them. Its raining ,the people can go outside. hard作形容词，意为“困难的，艰苦的，硬的”；作副词，意为“努力地，猛烈地”。Hardly意为“几乎不”。4拓展创新 疑问词how的用法（1）怎样，用什么手段，方法。Howdidhedoit?Idontknowhowtoswim.（2）情况如何（指身体健康状况）Howareyou? HowsitgoingwithTom?（3）howmany，howmuch表示“多少”howmany后接可数名词复数，howmuch接不可数名词。Howmanytimesdoyougotothepark?Howmanyticketsdoweneed?How much water do we need every day?Howmucharethosepants?（4）howoften是对动作发生的“次数”提问,询问的是频率“多久一次”回答可以是：Every day./ Once a week./Three times a week./ Often./ .eg：Howoftendoyouplaytennis?Howoftendoyousurftheinternet.(5) How long. ? 询问的是时间长短“多长时间”回答可以是：About one hour./ Three hours. / Thirty minutes./. How long do you usually watch TV? 你通常看多长时间电视？5. 梳理归纳 Section A 词组归纳：1. go to the movies 去看电影 2. look after = take care of 照顾3. surf the internet 上网 4. healthy lifestyle 健康的生活方式5. go skate boarding 去划板 6. keep healthy=stay healthy 保持健康7. exercise=take(much)exercise=do sports锻炼 8. eating habits 饮食习惯9. take more exercise 做更多的运动 10. the same as 与什么相同 11. be different from 不同 12. once a month一月一次13. twice a week一周两次 14. make a difference to 对什么有影响 15. how often 多久一次 16. although = though虽然 17. most of the students=most students 18. shop=go shopping=do some shopping 购物19. as for至于 20. activity survey活动调查 21. do homework做家庭作业 22. do house work做家务事 23. eat less meat吃更少的肉 24. junk food垃圾食物 6达标检测 根据句意填词. 1.How o_ do you come to school late? Never.2. Farmers milk some m _from cows.3. J_ food isnt good for your health. 4. Do you have a healthy lifestyle if you e_ every day?5. I eat fruit three t_ a week.6. Does he drink juice every morning? No, hardly e_.7. Here is a program, you may find out the r_.8. We are in Class 1, G_ 2.9. My father is very busy. He only plays basketball o_ a week.10. I cant do it by myself. Can you h_ me?五、典型例题解析 1.How often do you exercise? 你（你们）多久锻炼一次身体？ How often + 助动词do(does或did) + 主语 + do sth.? 疑问词how often是问频率(多久一次),（在这里助动词do(does或did) 是起帮助构成疑问的作用）与一般现在时或一般过去时连用，回答一般是用表示频率的副词，如：once, twice, three times, sometimes, often, quite, often, never, every day, once a week , twice a month , three times a month , three or four times a month 等。翻译：你们多久到工厂去一次？每星期两次。 ? 他多久去购一次物？”“一个月一次。 ? 2. “What do you usually do on weekends?” “ I usually play soccer.”“周末你通常做什么？”“我通常踢足球。”第一个do为助动词, 在这起帮助构成疑问的作用；而第二个do则是实义动词。 翻译：周末你通常做什么？我通常看电影。 ？ 周末她通常做什么？