3. U2 B (1a-1e) 教学课件.ppt

八年级（上） Go for it! 学练优英语教学课件 Section B (2a-2e) Unit 2 How often do you exercise? 学练优八年级英语上（ RJ ） 教学课件 学习目标 Key words & phrases: result ， percent ， online ， television ， although… play computer games ， use the Internet ， go camping ， go online… Key sentences: 1.We found that only fifteen percent of our students exercise every day. 2. Although many students like to watch sports, game shows are the most popular. 3. It's good to relax by using the Internet … 4. How many students do not exercise at all? New words and phrases result n. percent n. online adj. television n. although prep. through conj. mind n. 结果；后果 百分之 …… 在线的；联网的 电视节目；电视机 虽然；尽管；即使 以；凭借；穿过 头脑；心智 body n. such adj. & pron . such as together adv. die v. writer n. 身体 这样的；那样的；类似的 例如；像 …… 这样 在一起；共同 消灭；灭亡；死亡 作者；作家 How often do you …? Lead in How often do you …? I sleep eight hours every night. How many hours do you sleep every night? be good for our health be bad for our health 2a Rank these activities according to how often you think your classmates do them (1=most often, 6=least often). watch TV go to the movies play computer games exercise or play sports use the Internet go camping in the country Pre-reading 15 4 times a week 85 90 20 20 2 13 10 45 2b Read the article and complete the pie charts on the next page. While-reading 2c Read the article again and answer the questions. 1. How many percent of the students do not exercise at all? 2. How many percent of the students use the Internet every day? Twenty percent of the students do not exercise at all. Ninety percent of the students use the Internet every day. Post-reading 3. How often do most students watch TV? What do they usually watch? 4. What does the writer think is the best way to relax? Why? 5. Do you think the students at No. 5 are healthy? Why or why not? Most students watch TV every day. They usually watch game shows. The writer thinks exercise is the best way to relax because it’s healthy for the mind and body, and you can spend time with your friends and family as you play together. 1. not…at all 用于否定句，意为“根本不、一点也不”。 如： It wasn’t difficult at all. 这一点也不难。 There was nothing to eat at all. 根本没什么可吃的。 注： 在否定句中， at all 可位于句末，也可 跟在否定词后。如： He isn’t tired at all. / He’s not at all tired. 他一点也不累。 Language Points 另外，在口语中单独说 not at all , 可用来回答感谢或道歉。如： A ： Thank you very much. 多谢你了。 B ： Not at all. 不客气。 A ： I’m sorry to keep you waiting. 对不起，让你久等了。 B ： Oh, not at all. 噢，没关系。 2. at least 至少 例如： We should brush our teeth at least twice a day. 我们每天应该至少刷两次牙。 A good cigarette will smoke at least ten minutes. 一支好烟至少可以抽 10 分钟。 反义短语 ： at most 至多 3. although 虽然；尽管 例如： Although my uncle is old, he looks very strong and healthy. 我的叔叔虽然老了，但他看上去还是很健壮。 注意： although 引导的从句不能与 but, however 连用，但可与 yet, still 连用。 4. It is + adj. to do sth. 做某事是 …… 的 例如： It is interesting to pla y computer games. 玩电脑很有趣。 -It is very important _____ make a plan before a new term. -Yes. You must try to make it carefully. A. of B. for C. to C 5. spend v. 花费；消耗 例如： How did you spend your summer vacation? 你是如何度过暑假的？ I spent 5 yuan on this book. 这本书花了我五十元。 It usually takes me half an hour to do my homework. 做作业通常花费我半小时的时间。 Students often spend one and a half hours (in) doing homework. 学生们经常花一个半小时的时间做作业。 I paid 10 yuan for this book. 我买这本书付了十元钱。 take, spend, cost & pay 结论 ： take “花费 ( 时间 ) ”；主语为物。 It takes sb. some time to do sth. “花费某人 …… 时间来做某事”。 spend “花费 ( 时间 / 金钱 ) ”主语为人； spend …on sth. “买某物花了 …… 钱 ”； spend + time + (in) doing “花费多少时间来做某事”； 可以与 it takes sb. some time to do sth. 转换。 pay “付款”； 主语为人； pay … for “花钱买某物” 2d According to the article and the pie charts, write sentences with the percentages using always , usually or sometimes . 1. 90%: __________________________________ 2. 85%: __________________________________ 3. 45%: __________________________________ 4. 10%: __________________________________ 5. 13%: __________________________________ 6. 2%: ___________________________________ Ninety percent of the students always use the Internet. Eighty-five percent of the students always watch TV. Forty-five percent of the students usually exercise. Ten percent of the students often use the Internet. Thirteen percent of the students usually watch TV. Two percent of the students sometimes watch TV. 2e Choose one of these free time activities or think of your own. Then ask your classmates how often they do this activity and make a pie chart. Show the pie chart to your class. play computer games read books go shopping draw pictures play sports How often do you …? Names of classmates 1-3 times a week 4-6 times a week every day 1 ． Key vocabulary ： percent ， online ， although ， through ， such as ， not...at all ， in one's free time 2 ． Sentences ： Although many students like to watch sports ， game shows are the most popular. Summary Summary Review the new words in the period. Review the language points in 2b. Work out the exercise on the students’ book. Homework Homework Thank you,everyone!Bye-Bye