《Road safety》PPT(第一课时)

Unit4RoadsafetyIntroduceT:Howcanyoucrosstheroadsafety?S：Wemustlookforazebracrossing.Wemustlookatthetrafficlightsandwaitforthegreenman.Seetheredman,wemustn’tcrosstheroad.Youcanwaitonthepavement.Youmustn’tplayontheroad.T:Welldone.Nowlet’splayagame.Wordslook[lʊk]动词，和at构成固定词组：lookat,意为“看...”eg：Heislookingattheboysoverthere.他正在看那边的男孩。小练习：填上合适的介词：Tokeepsafe,youcanlook______forcarsandblkes.outWordscan[kæn]情态动词，表示：“会、能.后跟动词原形eg：Icanswim.我会游泳。小练习：单项选择：（）Hecan______basketballwell.A.playsB.play拓展：其否定形式cannot=can’t有时还表示请求、允许，或推测eg：CanIhelpyou?我能帮助你吗？BWordsclean[kli:n]动词，解释为打扫；形容词，解释为干净的；eg：1.Thisismycleanroom.这是我干净的房间。2.Let’scleanourclassroom.让我们打扫一下我们的教室。小练习：Becarefultokeepyourselfclean.What’smeaningofclean?清洁的ExpressionsRedman,stop.stoptodo停下来去做某事；stopdoing停下某事。eg：（1）Let'sstoptohavearest.我们停下来歇会儿吧（2）Stoptalking,please.Let‘ssinganEnglishsong.不要说话了，让我们唱支英文歌曲吧。小练习：英译汉：Now,stoptalking.Classbegins．____________不要讲话了，开始上课。ExpressionsYoumustn’trunquicklyontheroad.你不能在路上快速跑。quick是形容词,后修饰名词；quickly是副词后修饰动词。eg：Thebusiscoming，andyoumustbequick.车子过来了，你必须快点。Quickly，thebusiscoming.快点，公交车来了。小练习：用所给词的适当形式填空：Be_____(quick)!快点！quicklyDialogueRedman,stop.Greenmango!红灯停，绿灯走！Whatmustyoudoontheroad?在公路上你必须做什么？Imustlookoutforcars.我必须小心汽车。Right!对了！SummarylookcancleanRedman,stop.Whatmustyoudoontheroad?Exercise词性转换1.cannot(缩写形式)_______2.mustnot(缩写形式)______3.quick(副词)______4.loud(副词)______can’tmustn’tquicklyloudlyExercise词组互译1.踢足球_______________2.在路上跑_____________3.绿灯_________________4.快速跑_______________5.大声说话_____________6.在课上_______________playfootballrunontheroadgreenmanrunquicklytalkloudlyinclassExercise连词成句1.mustn’t,playgamesyou,balltheroad,on(.)__________________________________2.must,you,listen,teachers,to,class,in(.)__________________________________3.what,you,must,dothe.on,roads(.)__________________________________Youmustn’tplayballgamesontheroad.Youmustlistentoteachersinclass.Whatmustyoudoontheroads?HomeworkKnowthetrafficsigns.