Unit1Topic3TheworldhaschangedforthebetterTeachingAimsa.Wordsandexpressionsasamatteroffact,discover,direct,possible,fair,invention,exciteinneed,medical,treatment,provide,conversation,secretary,engineer,fisherman,dead,army,wound,granddaughter,grandchild,ache,fire,stairs,downstairs,boardb.Patterns:.Oh,youwillgetusedtoitverysoonifyoucome.Youmustcomeforavisit.Oncetheyfindpeopleinneed,theydecideonsuitablewaystohelpthem.Theprogramalsoprovidesthemwithnicehouses.YouhavebeeninNewYorkforalongtime.ThecityhasimprovedalotsinceIcamehereafewyearsago.Bobbylefttheparktwohoursago/at8:00.Bobbyhasbeenawayfromtheparksince8:00/fortwohours.c.Grammar:Learnthepresentperfecttensewith“for”or“since”:Teachingfocus:Goonlearningthepresentperfecttensewith“for”or“since”andfindthedifferencesbetweenthepresentperfecttenseandthesimplepasttense:Aboutthetime；Thistopicneeds5periods.总第11课时Topic3Theworldhaschangedforthebetter.SectionATeachingaimsanddemands1.Learnsomenewwordsandphrases:asamatteroffact,discover,direct,possible,fair,invention,excite2.Learnsomeusefulsentences:(1)Oh,youwillgetusedtoitverysoonifyoucome.(2)Youmustcomeforavisit.3.Learnthepresentperfecttensewith“for”or“since”:(1)YouhavebeeninNewYorkforalongtime.(2)ThecityhasimprovedalotsinceIcamehereafewyearsagoTeachingfocus:Learnthepresentperfecttensewith“for”or“since”:Teachingprocedure:Step1ReviewT:S1,haveyoueverbeentoBeijing?S1:No,Ihaven’t.Ihaveneverbeenthere.T:Whataboutyourelderbrother?Iheardhehadbeenthere.S1:Yes,hehasjustcomeback.T:Howlonghashestayedthere?S1:Forabouttwoweeks.Step2PresentationListentothetape,findoutthesentenceswith“for,since”T:Now,whocananswerthequestion:HowwasNewYork’straffic?S1:Thetrafficwasterribleandalmosteveryonedrovetoofast.T:You’reright.Whataboutitsstreetsinthepast?S2:Thestreetsweredirty.T:Doesitchangenow?S2:Yes.Itisquitecleannow.T:IsNewYorkadangerousplacenow?S3:No,itisn’t.Itwasdangerousinthepast.T:Welldone.Youranswersareexcellent.IfyouwanttoknowmoreaboutNewYork,youmustcomeforavisitthere.Doyouwanttogothere?Ss:Yes.Ofcourse.T:Ihopeyouhavechances.Nowlet’sreadafterthetape.Hehasstayedthereforabouttwoweeks.YouhavebeeninNewYorkforalongtime.Greatchangeshavealreadytakenplacesince1984.ThecityhasimprovedalotsinceIcamehereafewyearsago.for+时间段since+时间点/从句Step3ConsolidationRead1a，complete1b，Step4Practice派生构词(1)否定前缀：un-,im-,dis-,in-等。happy-unhappy,polite-impolite,agree-disagree,direct-indirect(2)re-前缀表示“重复”。write-rewrite(3)动词+-er表示“人”。read-reader,write-writer(4)动词+-ion/-ment/-ness变成名词。act-action,treat-treatment,ill-illness(5)名+-y变成形容词。cloud-cloudy,sun-sunny(6)名词/动词+-ful变成形容词。care-careful,hope-hopeful(7)形容词+-ly变成副词。sad-sadly,strong-strongly3.Guessandmasterthesewords.1.T:Ifyouareinterestedinit,let’shaveadiscussionandtrytomakethewords,suchas:likeanddislike,comfortableanduncomfortable.obeyablehopecleverbeautywriteagreehumorfogdangerfriendlyrecentillhealthcomfortablelucktelllikepossiblevisitpolitesuccesssuggestusesnowwestwinyournoisepeacerapidhappydeveloplaborbuildhomeexcitechangebrighttwentycarecollectcrowdenjoyT:Finishthesederivations.Youcandothemingroups.Homework:Makesentenceswith“for”or“since”DesignTheworldhaschangedforthebetter.cover→discoverdirect→indirectpossible→impossibleexcite→excitingfair→unfairinvent→inventionuse—useful—usele...
