新目标九年级英语Unit13SectionB(3a-SelfCheck)课件.ppt
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新目标九年级英语Unit13SectionB(3a-SelfCheck)课件.ppt
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1,Unit13Wearetryingtosavetheearth!
SectionB(3a-Selfcheck),2,停止乘小汽车2.回收纸3.用纸巾4.好好利用5.用垃圾建造房子6.倒置7.经营小生意,Revision,stopridingincarsrecyclepaperusepapernapkinsputtogoodusebuildahouseoutofrubbishturnupsidedownsetupasmallbusiness,3,8.回复,归还9.旧玻璃瓶10.拆下11.一个有创意的大脑12.开一个小店13.更受欢迎的作品14.给他人带来欢乐,bringbackoldglassbottlespulldownacreativemindopenasmallshopmorepopularworksbringhappinesstoothers,4,Turnoffthelightswhenweleavearoom.Takeourownbagswhenshopping.Rideabike.Recyclepaper.Dontusepapernapkins.,Warmingup,Whatshouldwedotosavetheearth?
5,Theyshouldclosedownthefactoriesthatputwasteintotheriver.Setupalotofdustbinsonthestreet.Stoppeoplefromusingwoodenchopsticks,plasticbowlsandbags.Organizepeopletocleanupthestreetsandrivers.,Whatshouldgovernmentsdotosavetheearth?
Lookatthesestepsofmakingabasketbyusingtheplasticbottle,andthentrytomakeonebyyourself.,6,7,SelfCheck,8,1,Writedifferentformsofthewords.Thenaddmoretoeachgroup.,pollution,action,protection,inspiration,building,creation,famous,wooden,scientific,healthy,southern,careful,9,difference,importance,slowly,widely,suddenly,really,10,2,Macheachstatementwiththegrammarstructure.,http:
/,11,3,Writewaystocutdownonthesekindsofpollution.,askfactoriesnottothrowwasteintotheriver;remindpeoplenottolitter,ensurethatfactoriesthrowawayindustrialwasteinaresponsibleway;trynottouseplasticbagswhenshopping,12,buildairportawayfromplaceswherepeoplelive,encouragepeopletousepublictransportationinsteadofdriving;reducethenumberoffactoriesthatburncoal,Thinkabouttheenvironmentinyourtown/cityandcompletethechartbelow.,Whichpartsofthetown/cityhaveaniceenvironment?
Whyaretheynice?
Whichpartsneedtobeimproved?
Why?
Pairwork,3a,Pairwork,13,14,theairisclean,somanytrees,cleanandtidy,alotofrubbish,somanycars,somanyfactories,Writealettertothecitymayorabouttheproblemandyoursuggestions.,Whataretheproblems?
Wherearethey?
Whatorwhoiscausingtheseproblems?
Writing,Inyourletter,describetheenvironmentalproblemsinyourtown/city.,3b,15,16,Then,givesuggestionsorpossiblewaystosolvetheproblems.IthinkthatWeshould/couldIsuggest,17,本次写作内容是一封书信,信中首先要介绍你所在城市存在有哪些环境问题,是谁造成的这些问题,然后提出解决这些环境问题的方法和措施,可以结合3中列举的问题和前面学过的解决办法来完成这封信。
写作指导,18,DearSir/Madam,Environmentalproblemsarebecomingmoreandmoreseriousallovertheworld.Withthedevelopmentofthesociety,therearetoomanycarsonthestreetsinyourcity.Carshavemadetheairunhealthyforpeopletobreathe.Black,Samplewriting,19,smokeandpoisonousgasaregivenoffbyfactories.Factoriesalsoputwasteintotheriver.Andwhereverwego,wecanfindrubbish.Nowmoreandmorepeoplehaverealizedtheseproblems.Ithinkthatgovernmentsshouldclosedownthefactoriesanddeveloplawstostoppeoplefromdrivingcarseveryday.Isuggest,20,everyoneinthistownshouldhelptocleanuptheriverandthestreets.Weshouldcalloneveryoneinthetowntothrowrubbishinthedustbins.Ihopetheproblemwillbesolvedinthenearfutureandourhomewillbecomebetterandbetter.,Yoursfaithfully,Jenny,21,互动课堂(探究与合作),探究点1:
构词法,根据括号里的汉语意思写出单词,并体会这些单词的构成方法。
Doyouhavea_(报纸)?
2.The_(细心的)studentmadea_(粗心的)mistake.3.Please_(浇水)thetreewithsome_(水).,newspaper,careful,careless,water,water,22,英语中的常见构词法有_、_、和_。
合成法:
由两个或两个以上的词合成一个新词,这种构词法叫作合成法。
合成法可以构成名词、形容词、动词、数词、介词等。
如:
classroom(名词+名词),blackboard(形容词+名词),worldwide(名词+形容词),good-looking(形容词+现在分词),overcome(副词+动词),fifty-four(数词+数词),everything,somebody(不定代词+名词)等。
合成,转化,派生,23,
(2)派生法:
在一个单词前面或后面加上一个词缀构成新词,这种构词法叫做派生法。
加在单词前的词缀叫_,加在单词后的词缀叫_。
常见的前缀:
un-(不,非)unable,unimportant,untruedis-(不,非)discover,disorder,discoloredbi-(两个、双边的)bicycleinter-(相互)Internet,international,interview,前缀,后缀,24,re-(又,再,重新)rewrite,retell,reviewtele-(远距离传输,电视)telephone,television常见的名词后缀:
-er/or(人)teacher,writer,foreigner,visitor-ist(人)artist,scientist,tourist,terrorist-ese(民族,语言)Chinese,Japanese-tion(动作,状态)invitation,attraction,population,25,常见的形容词后缀:
-ful(充满)careful,colorful,useful,helpful-y(有的)cloudy,sunny,windy,lucky,funny-al(有特点的)traditional,international,natural-able(能够)comfortable,unforgettable-less(没有,无)homeless,helpless,careless,26,(3)转化法:
一个单词由一种词类转换为另一种词类,这种构词法叫转换法。
单词转化后的意义往往与之前的意义联系密切。
如:
watern.水waterv.浇水slowadj.慢的slowv.放慢walkv.散步,走walkn.散步,27,【拓展】缩写和简写(也称截断法或缩略法)主要采取“截头”、“去尾”或者“既截头又去尾”的方法来生产新单词。
如:
telephonephoneairplaneplanelaboratorylabmathematicsmathadvertisementadexaminationexaminfluenzaflu另外,还有很多缩写成是由各个单词的首字母组成,如:
CD,CCTV,kg,NBA,UFO,UN,ID,USA,WWF,28,互动课堂(探究与合作),探究点2:
比较级的用法,读下列句子,注意画线部分的用法。
Heisgettingfatterandfatter.他越来越胖了。
2.Theflowersaremoreandmorebeautiful.花儿越来越漂亮。
3.Igotupearlierthanmybrothertoday.我今天比我哥哥起得早。
4.Thisroomis(twotimes)biggerthanthatone.这个房间比那个房间大(三倍)。
29,5.Heruns(twotimes)fasterthanme.他跑的速度比我快(两倍)。
6.Lookatthetwogirls.Mysisteristhetallerofthetwo.看那两个女孩,我姐姐是她们中较高的那个。
7.Thebusiermyfatheris,thehappierhefeels.我父亲越忙,他感到越高兴。
8.Whichisbetter,thisoneorthatone?
哪一个好一些,这个还是那个?
9.Whodrawsbetter,MikeorJack?
谁画得比较好,迈克还是杰克?
30,“比较级+and+比较级”或“moreandmore+原级(多音节或部分双音节词)”,表示“_”,and前面和后面的比较级为同一个词的比较级。
(2)“甲+be+(数词+times+)形容词的比较级+than+乙”或“甲+实义动词+(数词+times+)副词的比较级+than+乙”,意为“_”。
越来越,甲比乙(几倍),31,(3)“甲+be+the+_+ofthetwo”,意为“甲是两者中较的”。
(4)“the+比较级,the+_”表示“越,越”。
(5)“疑问词+be+形容词比较级,甲or乙?
”或“疑问词+实义动词+副词的比较级,甲or乙?
”表示“_?
”,比较级,哪一个更,甲还是乙?
形容词的比较级,32,同步课堂练习册,
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- 新目标 九年级 英语 Unit13SectionB SelfCheck 课件