八年级上册Unit2 How often do you exercise SB-2a课件

Lead-inNationalHeroHeis84yearsold!Whatarehissecrets(秘诀)ofkeepinghealthy?ZhongNanshanWatchavideoLeadinHowoftendoesheexercise?Howlongdoesheexerciseeveryday?Whatarehissecretsofkeepinghealthy?Heexercises4or5timesaweek.Heexercises45minuteseveryday.Regular(有规律的)exercise,healthyeatinghabitsandagoodmood（心情）.Exercisemakesmehealthy!长期使用手机、电脑

对身体的危害危害一Youreyes眼睛干涩--干眼症干眼症发展到严重的时期，眼睛会红肿、充血、角质化、角膜上皮破皮而有丝状物黏附，这种损伤日久则可造成角结膜病变，并会影响视力。造成近视和散光近视和散光都会导致视力下降诱发青光眼青光眼是较难治愈的一种疾病，患者会出现视力下降和视野缺损直至导致失明，并且这种损伤是不可逆的，急性青光眼如不抓紧时间治疗，很有可能在短时间内致盲。危害二Yourcervicalvertebra2014年的一项研究显示，使用手机等移动设备时的低头姿势，会对颈部造成很大压力，头越低，压力越大：正常抬头的情况下，颈部受到的压力是4.5~5.4公斤；头部前倾15°，颈部受到的压力是12.2公斤；头部前倾30°，颈部受到的压力是18.1公斤；头部前倾45°，颈部受到的压力是22.2公斤；头部前倾60°，颈部受到的压力达到27.2公斤，是正常抬头时的5~6倍！震惊！Otherwise……Pre-readingWhatdoyouusuallydoinyourfreetime?Howlongdoesittakeyouto________?ReadthearticleWhile-readingFastreading1.Whatkindofarticleisit?A.Astory B.Areport

C.Anessay(散文）

2.What'sthepassageabout?A.It'saboutstudents'freetimeactivities.B.It'saboutstudents'study.C.It'saboutusingtheInternet.方法指导：文章中心句一般可在标题、文章开头或末尾找到。Dividethereportintothreepartsandmatcheachpartwiththemainidea.Para.1Para.2,3,4Para.5Comments调查结论Results调查结果Topic调查内容FastreadingPartIPartIIPartIIIFreetimeactivitiesParagraph1Paragraph2Paragraph3Paragraph4Paragraph5Introduction(介绍)ExerciseGo

onlineWatch

televisionSummary（总结）ExerciseUsetheInternetWatchTVReadingtips:skipping（跳读法）找准关键词，浏览语段，一一对应______%everyday______%3-4timesaweek______%4-6timesaweek______%1-3timesaweek20201510901328545Readthearticlecarefullyandcompletethepiechartsbelow.2bWhatcanweknowfromthepiecharts?DoyouthinkthestudentsatNo.5arehealthy?Whyorwhynot?What'sthewriter'sopinion(观点)?△Thebestwaytorelaxisthroughexercise.△Why?△Manypeoplecan'tkeepexercising,why?It’shealthyforthemindandthebody.Itisfun.Youcanspendtimewithyourfriendsandfamilyasyouplaytogether.Oldhabitsdiehard.旧习难改。Post-readingThebestwaytorelaxisthroughexercise.Thegreatestenemy（敌人）isyourself!Startexercisingbeforeit'stoolate!Homework123Pleasefinish