高中英語 Unit1 Tales of the unexplained Grammar and usage課件 牛津譯林版必修2.ppt

《高中英語 Unit1 Tales of the unexplained Grammar and usage課件 牛津譯林版必修2.ppt》由會(huì)員分享，可在線閱讀，更多相關(guān)《高中英語 Unit1 Tales of the unexplained Grammar and usage課件 牛津譯林版必修2.ppt（59頁珍藏版）》請?jiān)谘b配圖網(wǎng)上搜索。

Unit1Talesoftheunexplained Presentperfecttense Presentprefectcontinuoustense Grammarandusage Lookatthefollowingsentencesandtrytoexplainwhythetenseisusedinthesesentences 1 WehavestudiedEnglishforaboutfiveyears 2 Theyhavelivedtheresince1990 3 Shehasn tfinishedherhomeworkyet 4 Erichasjustcomeback 5 Howlonghaveyoubeenhere 1 Theformofthepresentperfecttense Weformthepresentperfecttensewithhave hasandthepastparticipleoftheverb have has 過去分詞 Justinhasdisappeared soKellyisverysad Weusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast butareconnectedtothepresent Note 2 Theusesofthepresentperfecttense IhavenotseenJustinsincelastFridaynight Wealsousethepresentperfecttensetotalkaboutsomethingthatstartedinthepastandisstillhappeningnow Note Ihaven tseenyouforages Hehasjustgoneout Ithasbeenverycoldlately Shehasalreadyfinishedherhomework Hehasn tseenhersincethemeeting Note Weusethepresentperfecttensewhentheexacttimeofanactionisnotclearorimportant Weuseitwithtimeexpressionssuchas alreadyeverforjustlatelyneverrecentlysinceyet Weusealreadyforaffirmativestatements yetfornegativestatements Weusefor aperiodoftime since apointintime Weusethepresentperfecttensetotalkaboutactionsthatwerecompletedonlyashorttimeago Hehasjustgoneout Hewentoutafewminutesago Ihavejustheardthenews NowIknowthenews Note Wecanalsousethepresentperfecttenseforrepeatedactions thatis weusethepresentperfecttensewiththetimeexpressionsonce twice threetimes e g TheysaythattheyhavebeentoAmericamanytimes Note Lookatthesentencesandfindthedifference Tomhasrungupthreetimesthismorning Nowitisstillinthemorning Tomrangupthreetimesthismorning Nowitisnotstillinthemorning Actionsoccurringinanincompleteperiodmightbeindicatedbytodayorthismorning afternoon evening week month year centuryorallday night week allthetime alwaysetc Note Pointoutwhattenseortensesareusedinthesentencesandthereasonswhytheyareused 1 WehavestudiedEnglishforaboutfiveyears Webegantostudyitfiveyearsago 2 Theymovedtothesouthin1990andhavelivedtheresincethen 3 Ericlefthomelastyearandhasjustcomeback 4 Theyboughtthishousethreeyearsagoandtheyhavelivedheresincethen 5 Mybrotherwenttoseemygrandpalastweek Hehasvisitedhimthreetimesthismonth 1 you mypen Yes I itonyourdeskjustnow see 2 you dinner Yes I itwithMary have 3 thepostman yetthismorning thepostman thismorning come Have Have had Did Have Completethesentences seen come come had saw Thepresentperfecttenseisnormallyusedforanactionwhichlaststhroughoutanincompleteperiod butwiththepastsimpletense weusetimeexpressionswhichafixedpointinthepast Note Billhassmokedsinceheleftschool Hestillsmokes Billsmokedforsixmonths Itmeansthathestoppedsmokingthen Sometimes however thepresentperfecttenseusedfortheactionfinishesatthetimeofspeaking e g Ithasbeenverycoldlatelybutit sjustbeginningtogetwarmer Onmeetingsomeone youmaysay Ihaven tseenyouforages ButIseeyounow Note Note Thepresentperfecttenseusedforapastactionwhosetimeisnotdefiniteandoftenhasaresultinthepresent Tomhashadabadcarcrash He sprobablystillinhospitalnow Tomhadabadcarcrash Heisprobablyoutofhospitalnow Youarewritingaboutafriend stravelsinyourdiary Completeyourdiaryentryusingthecorrectformsoftheverbsinbrackets 2 3 4 5 6 7 8 9 10 11 Answersforthediary saw hasvisited loves hasn tvisited hasseen hasnevermet hastravelled hasfound hasn tfound Has been Lookatthesentences Sorry Haveyoubeenwaitinglong Ihavebeenwaitingforanhour Past Onehourago Present waiting arrive 1 Theformofthepresentperfectcontinuoustense Weformthepresentperfectcontinuoustensewithhave hasbeenandthepresentparticipleoftheverb have has been doing 2 Theusesofthepresentperfectcontinuoustense Wesometimesusethepresentperfectcontinuoustensetotalkaboutactionsthatstartedinthepastandarestillcontinuing orhavejustfinishedbutarestillconnectedtothepresentinsomeway AnswersofDrFrank swebsite 2 3 4 5 6 havebeentalking havebeentalking havebeenstudying haveseen havebeenwriting ThisisthewebsiteofDrFrank Fillinthemissingwords usingthecorrecttense Presentperfectorpresentperfectcontinuoustense Sheisstillreadingthebook LiJiahasbeenreadingabookaboutStonehenge LiJiahasreadabookaboutStonehenge Shefinishedreadingthebook Sheknowsthecontentofthebooknow Note Weusethepresentperfecttensetotalkaboutanactioncompletedintherecentpast andthepresentprefectcontinuoustenseforanactionthatstartedinthepastandisstillhappening IhavevisitedEgypttwicethismonth IhavebeentouringEgyptfortwomonths Note Thepresentperfectcontinuoustensecan tbeusedwithtimeexpressionssuchastwiceorhowmanytimes becauseinthistensetheactioniscontinuous notstoppedandstartedagain Wecanusethepresentperfecttenseforrepeatedactions andthepresentperfectcontinuoustensefornon stopactions Howmanytimeshaveyouswuminthelake Howlonghaveyoubeenswimminginthelake Note Weusuallyusethepresentperfecttensetoaskquestionsbeginningwithhowmany much andthepresentperfectcontinuoustensetoaskquestionsbeginningwithhowlong Astateverboranactionverb 1 Ihavehadthiscameraforfiveyears 2 IhavetakenphotosofUFOswiththiscamera 3 IhavebeentakingphotosofUFOswiththiscamera stateverb actionverb stateverb Anactionmeanssomethinghappeningorchanging Astatemeanssomethingstayingthesame Someexamplesofactionverbsaredo go andplay Someexamplesofstateverbsarelike knowandexist Note Wecanuseeitherastateverboranactionwiththepresentperfecttense butweusuallycanonlyuseanactionverbwiththepresentperfectcontinuoustense Astateverbdoesn tmeananaction soitcan tbeusedinacontinuoustense e g They vealwayshadabiggarden Howlonghaveyouknowneachother He sbeeninhospitalsincehisaccident I vealreadybeentoParis I venevervisitedParis Note Weusethepresentperfecttense notthepresentperfectcontinuoustense withthewordslikealways never yet alreadyandever HowlonghaveyoubeenlearningEnglish HowlonghaveyoulearntEnglish Ithasbeenrainingforalongtime Ithasrainedforalongtime Note Anactionwhichbeganinthepastandisstillcontinuingorhasonlyjustfinishedcan withcertainverbs beexpressedbyeitherthepresentperfectorpresentperfectcontinuous Verbswhichcanbeusedinthiswayincludeexpect hope learn lie live sleep sit study wait want snow etc Makeupdialogueswiththepresentperfecttenseandthepresentperfectcontinuoustense Practice Twofriendsarechatting Readtheirconversationandcircletherightwordstocompleteit AnswersofpartAonpage11 2 3 4 5 6 7 8 9 10 11 heard beendoing beenresearching done started achieved read found started beendrawing beenmaking ThisisthecomicstripJohnsenttoMary Writeastorywiththecharactersinitbyansweringthefollowingquestions Useyourimaginationandbecreative 1 Wheredoyouthinktheboyhasbeenwaiting 2 Whathavethealiensbeentravellingby Whatdoesitlooklike Hehasbeenwaitingatabusstopinacity TheyhavebeentravellinginaUFO Itlookslikeasaucer 3 Whoelsehavethealienstalkedto 4 Whatotherplanetshavethealiensvisited TheyprobablyhavetalkedtoanimalsorplantsonEarthaswellascreaturesonotherplants TheyhavevisitedMars Venus Jupiterandsomeotherplanets I msorry butIdon tquitefollowyou DidyousayyouwanttoreturnonSeptember20 Sorry I myselfclear WewanttoreturnonOctober20 A hadn tmadeB wouldn tmakeC don tmakeD haven tmade Exercises 2 EveryyearafloodoffarmersarriveinShenzhenforthemoney makingjobsthey beforeleavingtheirhometowns A promisedB werepromisedC havepromisedD havebeenpromised 3 Motherwantedtobeagoodprovider aroleshe sincehermarriagetofather A shouldersB shoulderedC isshoulderingD hasbeenshouldering 4 Thebookhasbeentranslatedintothirtylanguagesinceit onthemarketin1973 A hadcomeB hascomeC cameD comes 5 I mtiredout I allafternoonandIdon tseemtohavefinishedanything A shoppedB haveshoppedC hadshoppedD havebeenshopping 1 FinishPartC1andC2onpage88inWorkbook 2 ReviewTaskpart Homework