外研版高中英语必修3module4教案introduction.docx
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外研版高中英语必修3module4教案introduction
Module4 SandstormsinAsia
Introduction
整体设计
教材
分析
在本节课中学生将会学到一些关于天气的词汇,重点是用来描述沙尘暴的词汇。
教材设计了三个活动来逐渐熟悉本模块的话题,学生可以通过教材设计的三个活动来加深对本单元话题的理解,并能流利地表达沙尘暴发生时的场景。
活动一可以设计成看图说话,教师要引导学生想象和回想沙尘暴发生时的场景并准确地描述出来。
活动二的判断正误可以使学生对当今地球的环境恶化有个更深地了解。
最后的小组讨论活动涉及人们在沙尘暴中的自我保护和对改造环境能够作出什么样的努力。
学生通过本节课的学习,能够对沙尘暴这种天气现象作出准确的描述并能分析其原因和给出解决方法。
三维目标
1.知识
与技能
1)Makestudentsmastersomenewwords.
2)Encouragestudentstoknowhowtodescribeasandstorm.
2.过程与方法
Trainstudents’speakingabilitythroughindividualandpairwork.
3.情感与价值
Getstudentstoknowtheharmthatsandstormsdotohumanbeingsandtrytodeveloptheirsenseofenvironmentprotection.
教学重点
Gettoknowsomeinformationaboutsandstormsandencouragestudentstousetheirownwordstodescribethem.
教学难点
Learnsomenewwordsandotherinformationaboutsandstorms.
教学方法
Individualwork,pairworktogeteverystudenttoparticipateinclass.
教学过程
→Step1Backgroundaboutthetopicofthismodule
1.Talkaboutthetopicofthismoduleasanintroduction.
Showthefollowingpa
ssagetostudentsonthescreen.
AboutSandstorm
Thetopicofthismoduleis“environmentalconservation”(环境保护).ThismodulemainlyintroducessomethingaboutthesandstormsinAsia,especiallyinChina.Atthesametime,itbringsinsomewordsaboutsandstormsandenvironmentalconservation.
Whatisasandstorm?
Asandstorm,akindofdisastrous(灾难性的)weathersystem,isacombinationofsandandstrongwind.
Whatonearthcausessandstorms?
Inmyopinion,severesandstormsareusuallycausedbybothnaturalandcontrived(人为的)factors,thatis,climatic,geographical,socialandhumanfactors.Ofallthefactors,theoveruseofnaturalresources,suchascuttingdowntoomanytreesandopeninguptoomuchuntouchedland,leadstothefrequentoccurrenceofsandstorms.
Wheredoesasandstormusuallygo?
Asmentionedabove,disastrousasitis,asandstormdoesnotgoeverywhere,comingtoonlythoseplaceswithdryweatherandlittlevegetation(植物的总称,植被).TakeChinaforexample,inthenorthwestofChina,wherethereislittleforest,sandstormsareworsenedwith(因为……而恶化)people’sactivitieslikediggingupgrassandmining(采矿).Barelandeasilygivesawayitslandwhenstrongwindscome,interactionofsandandwindformingasandstorm.
Andwhatdamagewillsandstormsusuallycause?
Inaword,alotofdamage.Sandstormscankillpeopleandanimals,putdownbuildingsandcausepoorharvests.What’smore,theycanpollutetheatmosphereandblowawaytopsoil.
2.Discussion:
Asseniorstudents,whatshouldyoudotopreventsandstorms?
Herearesomevaluablesu
ggestions:
1)Controlairandwaterpollution;
2)Buildgreenfencesalongthedesert;
3)Forecastsandstorm’srealtimetopreventthedisaster;
4)Allcountriesshouldjoinhandstoproposeaplaninsandstormcontrolandprevention.
Whatcanyouaddtothesesuggestions?
Studentscandiscussandaddmoretotheabovesuggestions.
→Step2Activity1
Introductionisthewarming-upofthismodule.Thispartmainlyintroducessomewordsrelatedtosandstorms.We’lllearnitbyfinishingthefollowing3activities.
Activity1(Page31)
OptionOne
1.Askstudentstolookatthepictu
reandask“Whathappens?
”
Studentswillgivetheirpossibleanswerslikethis:
Thereisaterriblesandstorm.
Somecarsarealmostburied.
Thatis,theyarealmostcoveredwithsand.
Theteachercanleadinandrepeatthewordsinthebox.
blow bury frightening last(v.) sandstorm
2.Thenaskstudentstocompletethesentencesusingthecorrectformofeachofthesewordsinthebox.
Therehasbeena_____________.It_____________fortenhoursandwasvery_____________.Thewind_____________thesandhigharoundthehouses,andsomecarswerealmostcompletely_____________bythesand.
Studentscanchecktheanswerswiththeirpartners.
Suggestedanswers:
1)sandstorm 2)haslasted/beenblowing 3)frightening 4)wasblowing 5)buried
3.Explainsomewords:
●Itlastedfortenhoursandwasveryfrightening.
它(沙尘暴)持续了十个小时,而且是非常可怕的。
frighteningadj.causingfear;alarming吓人的;可怕的
afrighteningexperience一次可怕的经历
frightenvt.fillsb.withfear;makeafraid使害怕;使(人)感到恐惧
Thestormfrightensthebaby.
暴风雨使那个婴儿受惊吓。
frightenedadj.inastateoffear;afraid;scared感到恐惧的;受到惊吓的
Helookedfrightenedashespoke.
他说话时显得非常恐惧。
【辨析】frightening与frightened
形容词frightening意为“令人惊吓的,恐怖的”,常用来说明事物。
类似的形容词还有exciting,interesting,disappointing,puzzling,surprising,astonishing,shocking,moving,amusing,encouraging,boring,pleasing,inspiring,tiring,worrying等,如:
Thesituationisencouraging.
形势使人感到鼓舞。
与frig
htening相对应的过去分词型的形容词是frightened,常用来修饰人。
类似的形容词还有excited,interested,disappointed,puzzled,surprised,astonished,shocked,moved,amused,encouraged,bored,delighted,inspired,pleased,tired,worried等。
注意:
若说明或修饰的名词是face,look,smile,voice等能表现出人的情感的词,通常用过去分词型的形容词。
如:
Therewasanexcitedlookonhisface.
他的脸上有种兴奋的表情。
Hervoicesoundedexcited.
她的声音听起来很兴奋。
Thegirlstaredatthemanwithfrightenedeyes.
这女孩以惊恐的眼神凝视那位男子。
练习
(1)Mr.Smith,_____________ofthe_____________speech,startedtoreadanovel.
A.ti
red;boring
B.tiring;bored
C.tired;bored
D.tiring;boring
(2)IwascyclinginthestreetwhenIheardanoldwoman_____________outa_____________cryandthensawherbleedingbadly.
A.give;frightening
B.give;frightened
C.togive;frightening
D.togive;frightened
(3)_____________thebigsnake,thelittlegirlstoodunderthetree,_____________outofherlife.
A.Seen;frightening
B.Seeing;frightening
C.Tosee;frightened
D.Seeing;frighte
ned
答案:
(1)A 第一个空形容史密斯先生累了,指人,用过去分词。
第二个空指speech“演讲”,指物,用现在分词表示“令人厌倦的”。
(2)B 第一个空是hearsb.dosth.结构,“听见某人做某事”,第二个空修饰的是cry这一表现出老妇人的情感的词,所以用frightened。
实际上,此时若强调“我”的感受,选A项也可以。
(3)D 第一个空“看见大蛇”,“看”的逻辑主语是thelittlegirl,所以要用现在分词表示主动;后一个空指的是小女孩吓得掉了魂,指人,用过去分词。
●last v.&adj.
(1)v. continue,goon“持续,延续(无被动)”,后面常接表示一段的时间状语,且状语前可带或不带for。
ThehotweatherwilllastuntilSeptember.
酷热天气将会延续到九月。
Thewarlasted(for)5years.
战争持续了5年。
(2)v.toremainofuse耐久;耐用
Thiskindofclothlastslong.
这种布耐穿。
(3)v.tobeenoughfor足够
Thefoodwilllastforthreedays.
食物还能维持3天。
(4)adj.theoneafteralltheothers最后的
Hewasthelastpersontoarriveattheparty.
他是最后一个到达聚会的。
Saturdayisthelastdayofaweek.
星期六是一周的最后一天。
(5)adj.notpossible最不可能的
Heisthelastmantotelllies.
他是最不可能说谎的人。
(6)adj.past过去的
GreatchangeshavetakenplaceinChinainthelasttenyears.
在过去10年里中国发生了很大变化。
(7)n.thingsorpeopleremainingintheend最后的人或事物
Thesearethelastofourbooks.
我们就剩下这些书了。
[拓展]
atlast最后
thelast...butone倒数第二的
tothelast直到最后
lastofall在最后
lastingadj.持久的,永恒的
练习
Itissaidthattheweatherwill_____________hotforanotherthreeorfourdays.
A.lookB.lastC.stayD.get
答案:
C 天气将继续热三四天。
last后面通常要加表示时间的短语。
●Thewindblewthesandhigharoundthehouses,andsomecarswerealmostcompletelyburiedbythesand.
强劲的风吹得房子周围的沙尘四处飞扬,有些小汽车几乎被沙尘所埋没。
blowvt.&vi.bemoving吹,吹动,刮。
例如:
Thewindsblowacrossthesea,pushinglittlewavesintobiggerandbiggerones.
风吹过海面,把小的波浪推向前进,变成越来越大的波浪。
Thewindhasblownmyhatoff.
风把我的帽子刮走了。
blown.hardstroke;suddenshock打,打击,奇袭,猛攻。
例如:
givesb.ablowonthehead给某人头上一击
blowaway刮走
blowdown刮
倒
blowover刮倒,吹倒
blowoff吹掉
blowout吹灭
4.Checktheanswers.
OptionTwo
1.Pairwork.Studentsreadthewordintheboxandtalkabouttheirmeaningsorrefertothedictionaries.
2.Fillintheblanksandcheckwitheachother.
3.Letsomeindividualstudentsreadtheiranswersandcorrectthemistakes.
4.Explainsomewords:
thesameasOptionOne,3.
→Step3Activity2(Page31)
Checkthemeaningofthesewords.
1.Readoutthewordsandaskstudentstorepeatthemafteryou.Takecarewiththestressonthesetwowords:
protect,Pacific.
2.Pairstudentstodecideonthemeaningswithorwithoutdictionaries.
3.Thenaskstudentstoworkinpairstodecidewhichofthefollowingstatementsisfalse.
1.Sandstormsbeginindesertareas.
2.Desertsarecreatedbyclimatechanges.
3.Desertsarealsocreatedbecausepeoplecutdowntreesanddigupgrass.
4.SandstormsfromAsiahaveblownacrossthePacificOceantoAmerica.
5.Sandstormscan’tbeprevented.
6.Theinlandregionhasmoresandstormsthantheonenearthesea.
Suggestedanswers:
Thefifthisfalse.
4.Explainsomelanguagepoints.
●Desertsarealsocreatedbecausepeoplecutdowntreesanddigupgrass.
人们把树砍了,把草挖了,也是沙漠的一个成因。
cutdown
(1)tobringdownbycutting通过砍伐使减少
Cuttingdownsomanytreeswithoutplan
tingsomewillmaketheenvironmentworse.
砍伐掉这么多树木而不种植补充会使环境变得更坏。
(2)toreduceinamount减少
Thedoctorshaveadvisedcuttingdownsmokinganddrinking.
医生建议少抽烟,少喝酒。
(3)toknockdownorkillsb.击倒或杀死某人
Therobbercutdownthepersonandranawayinataxi.
抢劫犯把那个人杀了然后乘出租车跑了。
cutacross抄近路 cutat对准(某人)猛击
cutback剪枝cutup剪成碎片
cutoff切断cutout剪除
练习
Hewasinhospitalforsixmonths.Hefeltasifhewas_____________fromtheoutsideworld.
A.cutout
B.cutoff
C.cutup
D.cut
through
答案:
B 根据短语的意思分析,此处指他住院六个月,感觉好像跟外界切断了联系。
cutthrough指“抄近路走过;刺穿”。
●Ifyouareinadesert,whatisthefirstsignofasandstorm?
如果你在沙漠里,沙尘暴的第一个迹象是什么?
signn.&v.
(1)n.board,notice,etc.thatdirectssb.towardssth.,givesawarning,advertisesabusiness,etc.“标志牌”“符号”“动作”“手势”
Haven’tyouseenthesign“Noparking”?
你没有看到牌子上写着“不许停车”吗?
Shakingheadsisasignofdisagreement.
摇头是表示不同意的动作。
(2)n.thingthatshowsthatsb./sth.ispresentorexists,orthatsth.mayhappen“迹象”“征兆”“痕迹”
Veryoftendarkcloudsareasignofrain.
乌云常常是下雨的征兆。
ScientistshavefoundnosignsoflifeonMars(火星)sofar.
迄今为止科学家们还