新概念青少版2Bunit21.ppt

Unit21,Theweatherforecast,Teachingcontents,Warmingup,W,a,r,m,i,n,g,-,u,p,1.Greetings:Hello,boysandgirls!Nicetoseeyouagain.,2.Learnasong.T:Whatstheweatherliketoday?,revision,Revision,规则动词过去式的构成。1）变化规则：动词变化很好记，一般末尾加-ed;如果词尾有个e，紧跟其后加个-d；辅音加y来结尾，变y为i加-ed；单元+单辅，双写辅音加-ed注：特殊变化要熟记。,2）读音规则：清后t，元浊d，t,d后读id,Revision,过去时的句子变化口诀：过去时，时过去。过去时态是否是，过去时间是标志。否定句很简单，did之后not添。疑问句也不难，did置于主语前。过去置于动词前，谓语动词需还原。,Newlesson,Whatisshetalkingabout?,Listen!,Theweatherforecast,snowy,cloudy,sunny,rainy,forecast,v.预测，预报,f:k:st,forecaster,n.预报员,announcer,n.播音员，节目主持人,nauns,gooverto转到,thenextfew,接下来的几个,在接下来的几天天气将要变化。,Theweatherwillchangeinthenextfewdays.,wind,n.风,wind,blow,v.吹,Shesblowingthedandelion.,blu,southwestsauwestn.西南,N,S,W,E,west,north,east,south,Fromtoday,thewindwillblowfromthesouthwest.,从今天起，风将会从西南部吹过来。,Fromtomorrow,thewindwillblowfromthesoutheast.,从明天起，风将会从东南部吹过来。,bringin带来,airn.天空,大气,rainreinn.雨,ThewindwillbringinwarmairfromtheAtlantic.,风将从大西洋带来暖空气。,bringin,v.带来,Atlantic,n.大西洋,ThewindwillbringinwetairfromAustralia.,风将从澳大利亚带来潮湿的空气。,graduallygrdjladv.逐渐地,Rainwillcomeingraduallyfromthesouthwestthisevening.,今天晚上，雨将会从西南方逐渐来临。,Therainisgraduallyheavy.,雨逐渐地大起来了。,n.阵雨,rainshower,Thewholecountrywillhavesomerainshowersinthenextthreedays.,在接下来的三天，全国将会有一些阵雨。,Thiscitywillhavelotsofrainshowersinthenextthreemonths.,在接下来的三个月，这个城市将会有大量阵雨。,thermometer,n.温度计,mmit,temperature,n.温度,temprit,degreesCelsius摄氏度diri:zselsis,rise上升,fallf:lv.降落,落下,Temperaturewillriseto12degreesCelsiusintheday.,白天气温将会上升到12摄氏度。,Nighttemperaturewillfallto4degreesCelsius.,夜间气温将会下降至4摄氏度。,autluk,n.前景，展望,theoutlookfor,对于的前景,outlook,Listentotherecording,andthenanswerthisquestion:Whatwilltheweatherbelikenextweek?听录音，然后回答问题：下周天气会怎么样？,Picture1,Andnowitsfivetonine,andtimefortheweatherforecast.LetsgoovertoCarlaDaneattheLondonWeatherCenter.Carla.,Announcer:,Picture2,ThanksJohn,andgoodmorning!Lastmonthwasunusuallycoldanddry.Butallthatwillchangeinthenextfewdays.,Weatherforecaster:,Picture3,Fromtoday,thewindwillblowfromthesouthwest.ItwillbringinwarmairfromtheAtlantic.Andwellhavesomerain.,Weatherforecaster:,Picture4,Rainwillcomeingraduallyfromthesouthwestthisevening.Thewholecountrywillhavesomerainshowersinthenextthreedays.someofthemwillbeheavy.,Weatherforecaster:,Picture5,Temperatureswillriseto12degreesCelsiusintheday.Nighttemperatureswillfallto4degreesCelsius.Itwillfeelcoldoverthehills.,Weatherforecaster:,Picture6,Andtheoutlookfornextweekend:thethreewswarm,wetandwindy.Andthatsyourweatherforecast.BacktoJohnatthestudio.,Weatherforecaster:,Letspractice：,GuidedConversation.对话练习。P45,LESSON42,Pronunciation语音,Weakforms:prepositions.英语中的介词常弱读，特别是最常见的介词of,for,from和at。当它们弱读时，或在短语的开头或者中间时，元音通常（但非一定）弱读为短元音/。,movemu:vvt.搬动,yetjetadv.还,尚,仍然,lastl:stadv.最近一次的，延续;继续；,traintreinn.列车,火车；,will引导的一般将来时:表示将来发生的动作或存在的状态，最基本的结构：will+动词原形肯定句：主语+will+动词原形+（宾语）+其他Somedaypeoplewillgotothemoon.否定句：在will的后面加not即可。willnot可缩写为wontTheywontusebooks.一般疑问句：把will提到句子主语之前，结尾变问号。Willstudentsgotoschoolinthefuture?特殊疑问句：特殊疑问词+will+主语+动词原形+其他？Whatwillyourdreamschoolhave?,“Therebe”句型的一般将来时肯定句：Therewillbe+名词+其他成份注意：无论后面加单数名词或复数形式，be都必须用原形。Therewillbeonlyonecountry.否定句：在will后面加not.Therewontbeonlyonecountry.一般疑问句：把will提到there之前。Willtherebeonlyonecountry?Yes,therewill./No,therewont.,注意：在口语中，所有人称都可以用will.,一般将来时的主要用法：,1、表示将来某一时刻的动作或状态：Wewillcometoseeyouthedayaftertomorrow.Therewillbeawonderfulshownextweek.2、表示将来某一段时间内经常的动作或状态：Thestudentswillcomeandworkinthelabonceaweek.Wewillcomeandworkinthisfactoryeveryyear.,今天晚上我将会打电话给你。将来，学生将会使用电脑学习。我们今天下午没有空。她不会听我的.,Iwillcallyouthisevening.,Studentswillusecomputerstolearninthefuture,Wewontbefreethisafternoon.,Shewillnotlistentome.,当天气变冷的时候，鸟类不会飞去南边我想下个夏天北京的天气将会非常热。他将会使用他的笔将会有大雨和大风天气。,Thebirdswontflyawaytothesouthwhentheweatherturnscold.,IthinkitwillbeveryhotinBeijingnextsummer.,Hewillusehispen,Willtherebeheavyrainandstrongwinds?,will句式总结:,FunctionalPractise：,.hopethatyouagoodtimethisevening.A.haveB.arehavingC.willhaveD.has2.Lookatthosebigblackclouds.Itrain.Letshurry.A.mustB.willC.wouldD.isgoingto,注意：will与begoingto的区别，begoingto可以表示明显将要发生的情况,3.Thereabasketballmatchthisafternoon.A.willhaveB.willbeC.ha