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1、Unit 2 How often do you exercise?R R八年级上册八年级上册八年级上册八年级上册Section B 2a-2eLearning objectsBy the end of the class,you will be able to 1.Learn the key words and useful expressions.2.Learn about the features of the expository writing.3.Learn to lead a healthy life and do more exercise.Do a surveyWhat do
2、you do in your free time?What activities do you think are good for our mental and physical health?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 gamesexercise or play sportsuse the Internetgo camping
3、in the country1234562aFast reading1.Read the article in 2b and choose.1).Whats the main idea of the passage?A.what No.5 High School students do in their free time B.students favorite activities C.heathy habits D.the most popular activitiesReading skill:We can get the main idea from the title,the fir
4、st and the last paragraph.2).What kinds of activities are mainly talked about?A.exercise B.use of Internet C.watch TV D.play basketballB.It is a survey about students free time activities.A.It is about how often students watch TV.C.It tells how often students do exercise.E.It is about how often stud
5、ents go online.Para.1Para.2Para.3Para.42.Read each paragraph quickly and get the main idea.Para.5D.The best way to relax is through exercise.去上网去上网Lets think and discussHow many parts can the article be divided into?What are they?What roles do the first and the last paragraph play?The structure of t
6、he article.Paragraph 1Paragraph 2-4Paragraph 5IntroductionExerciseGo onlineWatch televisionConclusionCareful readingRead the article and complete the pie charts on the next page._%every day _%4-6 times a week_%1-3 times a week_%no exercise201520452bTask 1:Read the second para.and complete.Then retel
7、l this para.ExerciseTask 2:Read the third para.and complete.Then retell this para._%3-4 times a week10_%every day 90Use the InternetTask 3:Read the fourth para.and complete.Then retell this para._%4-6 times a week_%1-3 times a week_%every day 85132Watch TVTask 4:Read the passage and judge1.About twe
8、nty-five percent of our students do not exercise at all.2.We were surprised that most students use the internet for fun and not for homework.3.Although many students like to watch sports,music shows are the most popular.1.4.It is not late to start exercising as“Old habits die hard.”TFThe suggestion（
9、建议）（建议）is:It is good to relax by using the Internet orwatching game shows,but we think the bestway to relax is through exercise.Analyse paragraph 5by doing通过做通过做Why:It is healthy for the mind and the body.You can spend time with your friends and family.“Old habits die hard.”So start exercising befor
10、e its too late.Remember:旧习难改旧习难改赶快开始锻炼，不要等到太晚。赶快开始锻炼，不要等到太晚。Read the article again and answer the questions.1.What percent of the students do not exercise at all?2.What percent of the students use the Internet every day?3.How often do most students watch TV?What do they usually watch?4.What does the
11、 writer think is the best way to relax?Why?5.Do you think the students in No.5 are healthy?Why or why not?2cTask 5:1.What percent of the students do not exercise at all?_2.What percent of the students use the Internet every day?_Ninety percent of the students.Twenty percent of the students.Check the
12、 answers3.How often do most students watch TV?What do they usually watch?_ _Most students watch TV every day.They usually watch sports and game shows.4.What does the writer think is the best way to relax?Why?_ _ _ Exercise.Because its healthy for the mind and the body,and you can spend time with you
13、r friends and family as you play together.5.Do you think the students in No.5 are healthy?_ Why or why not?_ _ _No,I dont think so.Because they use the Internet for fun and not for homework,and they watch TV too much.According to the article and the pie charts,write sentences with the percentages us
14、ing always,usually or sometimes.1.90%：_ _ 2.85%：_ _Eighty-five percent of the students always watch TV.Ninety percent of the students always use the Internet.2d4.10%:_ _3.45%：_ _Forty-five percent of the students usually exercise.Ten percent of the students usually use the Internet.5.13%:_ _6.2%:_ _
15、Thirteen percent of the students usually watch TV.Two percent of the students sometimes watch TV.Paragraph 1Paragraph 2-4Paragraph 5IntroductionExerciseGo onlineWatch televisionConclusionSummary See you next class.What Do No.5 High School Students Do in Their Free Time?Last month we asked our studen
16、ts about their free time activities.Our questions were about exercise,use of the Internet and watching TV.Here are the results.here开头的倒装句：开头的倒装句：(1)当当here位于句首，且句子的谓语动词是位于句首，且句子的谓语动词是be动词或动词或come,go等时，句子的主语和谓语等时，句子的主语和谓语要颠倒位置，构成倒装。要颠倒位置，构成倒装。(2)here位于句首，若句子的主语是代词，则位于句首，若句子的主语是代词，则句子不用倒装。句子不用倒装。E.g.He
17、re you are.result作名词作名词，意为，意为“结果；后果结果；后果”常用短语：常用短语：the result of 的结果的结果as a result 结果；因此结果；因此as a result of 因为；由于因为；由于result作动词作动词，意为，意为“由由造成；因造成；因发生发生”常用短语：常用短语：result in 导致；造成导致；造成We found that only fifteen percent of our students exercise every day.Forty-five percent exercise four to six times a
18、week.Twenty percent exercise only one to three times a week.And twenty percent do not exercise at all!宾语从句宾语从句“基数词基数词+percent+of+名词名词”作主作主语时，谓语动词的单复数要与语时，谓语动词的单复数要与of后面后面的名词单复数保持一致。的名词单复数保持一致。not at all“一点也不；根本不一点也不；根本不”。not常位于常位于be动词、助动词或情态动词之后，动词、助动词或情态动词之后，at all放在句尾，用来加强否定语气。放在句尾，用来加强否定语气。_%ever
19、y day _%4-6 times a week_%1-3 times a week_%no exercise20152045ExerciseWe all know that many students often go online,but we were surprised that ninety percent of them use the Internet every day.The other ten percent use it at least three or four times a week.Most students use it for fun and not for
20、 homework._%3-4 times a week10_%every day 90Use the InternetThe answers to our questions about watching television were also interesting.Only two percent of the students watch TV one to three times a week.Thirteen percent watch TV four to six times a week.And eighty-five percent watch TV every day!A
21、lthough many students like to watch sports,game shows are the most popular.the answer to “问题的回答问题的回答”the key to 的关键的关键the way(to)去去的路的路the ticket to 的票的票 _%4-6 times a week_%1-3 times a week_%every day 85132Watch TVIt is good to relax by using the Internet or watching game shows,but we think the bes
22、t way to relax is through exercise.It is healthy for the mind and the body.Exercise such as playing sports is fun,and you can spend time with your friends and family as you play together.And remember,“Old habits die hard.”So start exercising before its too late!形式主语形式主语不定式（短语）是真正的主语不定式（短语）是真正的主语旧习难改
23、旧习难改before引导时间状语从句引导时间状语从句不定式（短语）作后置定语不定式（短语）作后置定语mind作名词，意为作名词，意为“头脑；心智头脑；心智”常用短语如下：常用短语如下：make up ones mind下决心下决心change ones mind改变某人的想法改变某人的想法in ones mind在某人看来；在某人心里在某人看来；在某人心里keep in mind把把记在心里记在心里拓展拓展:mind作动词，意为作动词，意为“介意介意”，常用句型，常用句型“Would you mind(ones)doing?”“你介意（你介意（）做）做吗？吗？”die 过去式：过去式：died过去分词：过去分词：dying拓展拓展die的相关词：的相关词：dying adj.奄奄一息的奄奄一息的dead adj.死的死的death n.死亡死亡