九年级英语上册 Unit 2《Topic 3 Would you like to be a greener person》Section C 课件 仁爱版.ppt

unit2 savingtheearth topic3 wouldyouliketobeagreenerperson sectionc teachingaimsanddemands learnnewwords power acid nuclear technology electric maglev per wheel guide steel movement 2 goonlearningsomecompoundsentences 1 inmanycountries peopleproducepowerfromcoal butitisverydirtyandcausesacidrain 2 althoughelectricvehiclesproducenopollution therewillbeanincreaseinelectricityneedsiftheyarewidelyused 3 learntheadvantagesanddisadvantagesofsomekindsofenergy newwords 1areadandunderstand 1 lookupthesewordsinadictionary thenunderstandthemeaningsfurtherbyreadingthemessage poweracidrainnuclearrenewableelectricefficient 2 choosetherightpictureforeachparagraph a b c inmanycountries peopleproducepowerfromcoal butitisverydirtyandcausesacidrain somecountriesusenuclearenergytoproducepower however nuclearpowercanbeverydangerous tosolvetheenergyproblem peopleallovertheworldarelookingallthetimefornewwaystoproducepower chinaisoneofthefirstcountriesintheworldtousebiogastechnology farmersrecyclestraw grassandanimalwastetomakebiogas thisrenewableenergyisusedinpeople severydaylife electronicvehiclesweredevelopedinthe1990s nowthereareelectricvehiclesinmanycountries theyareveryefficientandcostverylittletorun althoughelectricvehiclesproducenopollution therewillbeanincreaseinelectricityneedsiftheyarewidelyused inchina thebest knownmaglevtrainisthegerman builtoneinshanghai ittakespeople30kmtotheairportinjust7minutesandreachesatopspeedof431kmperhour itisquietandquick thereisnowheelnoise becausetherearenowheels maglevtrainsareveryenergyefficientanddonotpollutetheair however maglevguidepathsaremuchmoreexpensivethantraditionalsteelrailways 1bworkalone read1aagainandfilloutthefollowingtable 2workalone readcarefullyandmatcheachsentencewiththerightpicture thenthinkaboutwhatelsecanbeusedtoproduceelectricity a therearethan3000powerstationsinworldthatproduceelectricitybyburninggarbagetoheatwater b peopleusethemovementofwastetoproduceelectricity c windisusedforproducingelectricityinmanyplaces d peopleproduceelectricityfromthesun 3writtenwork whatgoodhabitscanprotecttheenvironment listasmanyasyoucan themoreyoulist thegreeneryouare goodhabits turnoffhelightswhenyouleavearoom turnoff意为 关掉 常指关自来水 电灯以及家用电器等 相当于switchoff turnoff与turnon相对 如 explanation turnoffhelightswhenyouleavearoom wouldyoupleaseturnofftheradio 请把收音机关掉好吗 turnon turnoff turnup turndown都与turn一词有关 turnon意思是 打开 常指开灯 开家用电器 turnoff意思是 关掉 常指关自来水 电灯以及家用电器 turnup意思是 开大一点 调高 音量 等 turndown意思是将收音机 电视机 广播等的声音 亮度等 关小 调低 这一组词组中turnon与turnoff相对应 turndown与turnup相对应 pleaseturnon offtheradio 请把收音机打开 关上 thetvistooloud pleaseturnitdown 电视太吵了 请把它关小一点 这些短语中的on off up down均为副词 同时必须注意代词作它们的宾语时 其位置置于词组中间 如 exercises 1 we protecttheenvironment a supposeb supposedc supposetod aresupposedto2 don tforgettoturn thetvwhenyouleavetheroom a onb downc upd off 选择填空 d d 3 somepeoplelovepets othershatethem asb whenc whiled and4 theinternetcanbeusedfor jobs a findingb findc tofindd found5 theseboxesarestillnew don t allright a t