keeping healthyPPT教学课件

Unit2KeepingHealthyTopic3Mustweexercisetopreventtheflu?SectionDTickthefollowingideasyouthinkarecorrectbeforereading.Thenreadthepassageandcheck.Themoreexercise,thebetter.()Weshouldstopexercisingwhenwearehurt.()Drinkingwhileplayingsportsisbadforourhealth.()Exercisinginagymisnotagoodidea.()Shouldweneedtowarmupbeforerunning？Yes,weshould.做热身运动Isitnecessaryforustobuygoodexerciseequipment？No,itisn’t.运动器材Shouldwespendalotoftimeexercising?No,weshouldn’t.花费时间金钱等HowtoExerciseWellWarmup.Itisimportanttowarmupbeforeyouexercise.YouNeedtostretchyourlegs,arms,backandneckbeforeYoudoanydifficultactivitieslikerunning.Findgoodplacestoexercise.Youdonotneedtospeedalotofmoneyexercising.Youcanrunorplaysportsinaparkoryourhome.Justgetyourbodymoving!Don’tworktoohard.Chooseasportthatyouenjoyandthenyouexercisewillbefuninsteadofwork.Also,youonlyneedToexerciseafewtimeseachweek.Ifyouexercisefor30minuteseachtime,youwillstayhealthy.Drinkenoughwater.Itisimportanttodrinkwaterwhenyouexercise.Yourbodyneedsthewaterforenergyandforkeepingcool.Becareful!Ifyouhurtyourselfwhileyouareexercising,restUntilyoufeelbetter.ExercisingwhenyouarehurtisBadforyourhealth.Listento1aandmarkTrueorFalse.It’simportanttowarmupbeforeexercising.()It’snecessarytobuyexerciseequipment.()Weshouldchooseasportthatweenjoy.()Weshouldn’tdrinkalotofwaterwhenweexercise.()Wehadbetternotexercisewhenwearehurt.()Read1aandfillintheblanks.HowtoExerciseWellWeneedto__________.Weshould_________________________.Wehadbetternot______________.Weshould__________________.Wemustn’t________whenwearehurt.warmupfindgoodplacestoexerciseworktooharddrinkenoughwaterexerciseneedtodosth.需要做某事每个人都需要天天运动。Everyone___________exerciseeveryday.2.spendtime/moneyonsth.花费时间金钱在某事上spendtime/moneydoingsth.花费时间金钱做某事①我们不应该花费太多时间玩游戏。Weshouldn’t_______toomuchtime________computergames.②Ispent30yuan______thisbook.needstospendplayingon3.buysth.forsb.为某人买东西4.insteadof代替Eg:我会代替你去参加晚会。Iwillgototheparty_________you.5.Restuntilyoufeelbetter.until：直到Eg:我做作业直到我妈妈回家。Ididmyhomework_______mymothercamehome.insteadofuntilRewrite1aandgiveareport.Youcanbeginlikethis:Whenweareexercising,weshouldpayattentiontothefollowingrules.First,…Second，…Third，…Then，…WriteYourOwnNewspaperWorkingroupsanddiscussaboutkeepinghealthy.MakeahandwrittenEnglishnewspaperaboutkeepinghealthy.Thefollowinginformationwillhelpyou.TopicPictureWhattowriteaboutSayingPoemStoryKeepinghealthy1.healthyeatinghabits2.healthylivinghabits3.happiness…1.Anappleadaykeepsthedoctoraway.2.Earlytobed,earlytorise.3.Eachgroupmakestheirownnewspaperaboutkeepinghealthy.Thenshareitwiththewholeclass.GrammarModalVerbs(Ⅲ):must/haveto______weexercisetopreventtheflu?Yes,wemust.No,wedon’t_______./No,we_______.Andyou_____doyourhomeworkfirst.I______dosomecleaning.Musthavetoneedn’tmusthavetoGrammarReflexivePronounsFirstpersonSecondpersonThirdpersonSingular________yourselfhimself_______itselfPluralourselves_____________________PersonNumbermyselfyourselvesherselfthemselvesFunctions_____Iaskyousomequestions?Sure,go______.I’mafraidheis______rightnow.OK,I’llringhim______later.I’d______tospeaktoDr.LiYuping.CanI_______amessage?Pleasetellmyfather______________thetalktomorrowafternoon.Youshould______notosmokinganddrinking.Mayaheadbusylikeleavenottoforgetsayup1.用适当的反身代词填空。①Icooked______amealandthenIwatchedTV.②Ifyoudon’thelphim,he’llhavetodoitallby_________.③Iputthefoodonthetableandaskedthemtohelp__________.④JackandPeter,didyoucleantheroom________?⑤Becarefulwiththatknifeoryou’llcut________.⑥Johnhurt______whenhewasplayingfootball.myselfhimselfthemselvesyourselvesyourselfhimself2.句型转换。(1)Ihavetogotoschoolonfoottoday.(改为一般疑问句)_____you_____togotoschoolonfoottoday?(2)Jimhastostayathometolookafterhismother.(变为否定句)Jim_____________tostayathometolookafterhismother.(3)Doyouhavetocookforyourself?(否定回答)____,________.(4)MustIfinishmyhomeworknow?(否定回答)____,____________.或____,____________________.(5)We’dbettergotherebybike.(改为否定句)We___________________gotherebybike.DohaveNoIdon’tNoyouneedn’tNoyoudon’thavetohadbetternotdoesn’thave1.Learnmodalsforgivingadvice.2.Learnreflexivepronouns.3.Talkabouthowtoexercisewell.1.Writeaconversationbetweenadoctorandapatientontheexercisebook.2.Chooseoneofthefollowingillnesses:acold,theflu,oracough.3.Yourconversationshouldincludethesetwoquestions:(1)Whatcausestheillness?(2)WhatshouldIdotogetwell?汽化：物质从液态变为气态的过程液化：气态变为液态的过程。Q：这两种情况有什么异同点？结论：汽化的两种方式：沸腾和蒸发。沸腾（1）概念：在一定温度下，在液体内部和面同时发生的剧烈的汽化现象。探究：水的沸腾提出问题水沸腾时有什么特征？猜想水沸腾后继续加热，是不是温度会越来越高？器材：酒精灯、温度计、铁架台石棉网、烧杯、水时间123456…温度…时间温度记录沸腾特点：（1）沸腾：在液体内部，表面同时进行的剧烈的汽化现象（2）沸点：在液体沸腾时，液体的温度不变，这个温度叫液体的沸点（3）不同的液体沸点不同（4）沸腾时，气泡在上升的过程中,气泡逐渐变大（5）沸腾的条件：达到沸点，继续吸热蒸发（1）概念：在任何温度下，在液体的表面发生缓慢的汽化现象。2、影响液体蒸发快慢的因素Q：湿衣服如何才干得快？2影响蒸发快慢的因素液体的温度液体的表面积液体表面空气流动速度你感受过吗？探索实验二实验目的：实验器材：实验步骤：探究酒精蒸发是否吸热。温度计，酒精。实验结论：蒸发吸热1、把酒精擦在手背上，手背有什么感觉？2、把酒精反复涂在温度计的玻璃泡上，用扇子扇，温度计读数有什么变化？如果温度计不涂酒精，用扇子扇，温度计读数会变化吗？试解释这种现象夏天，用电风扇对人吹风为什么会有凉爽的感觉？你理解它的做法吗？蒸发和沸腾的异同比较不同点蒸发沸腾发生温度任何温度达到沸点且继续吸热发生部位液体表面液体表面和内部程度缓慢剧烈相同点1.都是汽化现象2.都要吸热液化3、液化放热.1、液化：物质从气态变为液态的过程。2、液化的两种方式：降低温度、压缩气体体积注意(1)平时我们看到的”白气”(如冬天说话时口里冒出的白气)不是气体，因为纯净的水蒸气是无色无味的，我们看不见，摸不着。我们看到的白气是一些小水滴，是液体，所以通常看到有“白气”都发生了液化现象。（2）判断液化时，一定要弄清楚是哪里的气体液化，因为液化的一种方式为降低温度，所以通常为温度高的气体碰到温度低的物体发生液化。