【課件】Unit 5 Discovering Useful Structures 課件人教版（2019） 必修第三冊

DiscoveringUsefulStructuresUNIT5Period4Bytheendofthisperiod,studentswillbeableto12345Completethebasic

understandingofthemodalverbMastertheusageofthepastfuturetense.……Objectives:Unit5THEVALUEOFMONEYDiscoveringusefulstructuresModalverbsModalverbsIfI______livemylifewithoutyounearmeThedays______allbeemptyThenightswouldseemsolongWithyouIseeforeverohsoclearlyI_____havebeeninlovebeforeButitneverfeltthisstrongOurdreamsareyoungAndwebothknowthey'lltakeuswherewewanttogoHoldmenowTouchmenowIdon'twanttolivewithoutyouNothing'sgonnachangemyloveforyouYou________knowbynowhowmuchIloveyouOnethingyou_____besureofI____neveraskformorethanyourloveNothing'sgonnachangemyloveforyouYou________knowbynowhowmuchIloveyouTheworld____changemywholelifethroughButnothing'sgonnachangemyloveforyouListentothesongandcompletethelyrics.hadtomightoughttocanoughtto

maywouldwillTheyarecalledmodalverbs.Theyareusedtoexpressability,obligation,possibility,intension,request,advice,etc.1.Youshouldcheckthecabhasabusinesspermit,andmakesureyouaskforareceipt.2.Trainsarefastandconvenient,butrushhourscanbeterrible.3.Todayrocketsareveryadvancedmachineswhichwecanusetosendastronautsintospace.4.Youshouldn’tgoonthoseships.5.Wecouldseethesunsettingbehindthewhitepagoda.6.MayIaskyousomequestionsaboutthemodernOlympics?7.Youmustn'tshowthislettertoanyoneelse.8.Foreignershavetotaketheirpassportswiththem.9.Youshouldn’tthrowawaythelittereverywhere.Youmustthrowitintotrashcan.10.Bynowhisrestaurantoughttobefullofpeople.1.You______checkthecabhasabusinesspermit,andmakesureyouaskforareceipt.2.Trainsarefastandconvenient,butrushhours____beterrible.3.Todayrocketsareveryadvancedmachineswhichwe____usetosendastronautsintospace.4.You_________goonthoseships.5.We______seethesunsettingbehindthewhitepagoda.shouldcancanshouldn’t

couldgo

Ready?6.____IaskyousomequestionsaboutthemodernOlympics?7.You_______showthislettertoanyoneelse.8.Foreigners_______taketheirpassportswiththem.9.You_________throwawaythelittereverywhere.You_____throwitintotrashcan.10.Bynowhisrestaurant________befullofpeople.Maymustn'thavetoshouldn’tmustoughtto*定義；*基本特征；*常見情態(tài)動詞、其否定式、其縮略形式；*情態(tài)動詞的表意功能；*常見情態(tài)動詞的用法.Focuson基本用法情態(tài)動詞

情態(tài)動詞表示說話人的語氣或對事物的態(tài)度，本身有一定的詞義，但要與動詞原形一起使用，給謂語動詞增添情態(tài)色彩，表示說話人對有關行為或事物的態(tài)度和看法，認為其可能、應該或必要等。定義:情態(tài)動詞情態(tài)動詞的基本特征1）情態(tài)動詞除ought和have外，后面只能接動詞原型。

2）情態(tài)動詞沒有人稱，數的變化，即情態(tài)動詞第三人稱單數不加-s。

3）情態(tài)動詞沒有非謂語形式，即沒有不定式，分詞，等形式。常見情態(tài)動詞、其否定式、其縮略形式:情態(tài)動詞否定式縮略形式cancouldmaymightshallshould情態(tài)動詞否定式縮略形式willwouldmusthadbetteroughttocannot/cannnotcan'tcouldnotcouldn'tmaynot/mightnotmightn'tshallnotshan'tshouldnotshouldn'twillnotwouldnotmustnothadbetternotoughtnottowon'twouldn'tmustn'toughtn't/一.Weusemodalverbstotalkabout:1.Ability（能力）2.Obligation（義務）3.possibility（可能性）4.Permissionandprohibition（允許）5.Necessity表示必要性Thefunctionsofmodalverbs二.Wealsousemodalverbsto:6.Makerequests（提出請求）7.Intention

(意圖和愿望)8.Giveadvice（提出意見）Tellthefunctionofthemodalverbs.1.Oliverbelievesthatwithamillion-poundbanknoteamancouldliveamonthinLondon.2.Wouldyoustepinsideamoment,please?3.Goodmorning,sir,wouldyoupleasecomein?4.Mayweaskwhatyou'redoinginthiscountry...?5.Well,Ican'tsaythatIhaveanyplans.6.Well,youmustn'tworryaboutthat.7.Couldyouoffermeworkhere?8.Ifyoudon'tmind,mayIaskyouhowmuchmoney...?9.Well,itmayseemluckytoyoubutnottome.10.Ifyou’llexcuseme,Ioughttobeonmyway.11.Youmustn'tthinkwedon'tcareaboutyou.12.Youcan'topenituntiltwoo'clock.possibilityrequestrequestpossibilityrequestrequestintentionnecessitypermission/prohibitionpermission/prohibitionrequestpossibility(1)表示能力。Mygrandmaiswellovereighty,butshecanreadwithoutglasses.(2)

表示客觀可能性。Accidentscanhappentoanydrunkendriver.1.can/could(3)

表示請求和允許?！狢anIhavealookatyourdesign?—Yes,ofcourseyoucan.(4)

表示驚訝、懷疑、不相信的態(tài)度。（主要用于否定句，疑問句和驚嘆句）。Whatcanhebedoingatthistimeofnight?(5)cannever/can’t……too表示“無論怎樣…也不過分”，“越…越好”。你過馬路的時候再小心也不為過。

Youcan’tbetoocarefulwhilecrossingtheroad.

(1)

表示許可might

比may語氣更加委婉，否定回答時可以使用can’t或mustn’t,表示“不可以”、“禁止”、阻止。--MayItakethisbookout?Yes,youcan.(No,youcan’t./No,youmustn’t.)2.may/might

(2)

用于祈使句中表示祝愿。

Mayyousucceed!(3)

與一些固定詞組的搭配

mayaswell,mightaswell+doIt’sgettingdark.Wemayaswellwalkhome.

Imayaswellhavearestfirst.(1)表示請求、建議等，would比will委婉客氣。sentencepattern

Wouldyouplease…Wouldyoumind…Wouldrather…Wouldyoulike…3.will/would(3)可表示經常性、習慣性、傾向性。翻譯為“經常、慣于、總是”。Theoldman_______haveasmokeunderabigtreeeveryafternoonafterhefinishedhisfarmwork.

would(2)

表示意志、愿望和決心。

Iwillneverdothatagain.

門就是打不開!

Thedoorwon’topen.

(1)用于一，三人稱疑問句表示征求對方的意見

和向對方請示Shall

thedriverwait?Whatshallwedonext?(2)

用于二三人稱陳述句表示命令警告，允諾，威脅以及法律條文規(guī)定YoushallhavethebookwhenIfinishit

4.shall\should(3)

表示勸告和建議Youshouldstudyhard.(4)表推測Theyshouldhavearrivedbytwoo'clock(5)用于if條件句表示萬一AskTomtoringmeupifyoushouldseehim.

(6)表竟然Idon'tknowwhyyoushouldbesorudeto

yourmother.(1)表示“必須；應該”。以must開頭的問句，否定回答常用needn’t或don’thaveto，肯定回答用must。Youmustcometoschoolontime.(2)表示有把握的推測，只用于肯定句中。

Youmustbeill.Icanseeitfromyourface.(3)表示“非要；偏要”。Theyaresleeping.Mustyouplaythepianoatthistime？5.musthaveto表示“不得不，必須”，有人稱、時態(tài)和數的變化。否定式為don’thaveto。Therearesomanymistakesinhisarticlethathehastorewriteit.

Youdon’thavetobuyagift,butyoucanif

youwantto.6.haveto【比較】must和haveto表示“不得不、必須”時，haveto與must意思上很接近。但must常表示說話人的主觀看法；而haveto一般強調客觀需要。I’mverytired.Imust

sitdownandhavearest.

Ihavetohurryupnow.Ihaveatraintocatch.7.oughttooughtto表示“應該；應當

”，可以表示有責任或義務而做某事。沒有人稱、數和時態(tài)的變化，否定式為

oughtnotto。Theyoughttoapologize.Heoughtn'ttohavebeendrivingsofast.8.hadbetterhadbetter，“最好”，縮寫為“’d?better”，表示提出建議、勸告或命令等，含有“應該做某事，有義務做某事”之意，一般適用于對晚輩、平輩。It's

half

past

two.

I

think

we

had

better

go

home.否定形式為hadbetternot，疑問句中hadbetter的否定形式有兩種：Hadn’t?+主語?+better?+?V原形+...?Had?+?主語?+?better?not?+V原形+…?

Fillintheblankswithsuitablemodalverbsinthebox.InthefilmTheMillionPoundBankNote,HenryAdamsisstuckinaforeigncountrywithoutmoneyandfriends,andwithnowheretostay.Whilethissituation______seemunusual,itcansometimeshappentotravellers.Incaseithappenstoyouonatripabroad,what_______youdo?First,andmostimportantly,you______staycalm.Fear______causeyoutobecomeconfused.Youneedtothinkclearly.Second,youshouldgotoyournearestconsulate.They_________beabletohelptosomeextent.Third,you_______dowelltocheckwithsomelocalcharities.They_______offerhelptotravellersinneed.Fourth,you____________avoidgettingintotrouble.You______thinkthatstealingsomemoneyorfoodwouldhelpyou,butyoushouldnotdoso.Gettingcaught_______ruinyourlife.may,must,can,oughtto,might,hadbetter,would,shouldmayshouldmustcanoughttowouldmightwouldhadbetterP542mightWorkinpairs.DiscussthescenefromTheMillionPoundBankNoteonpage52andshareyourunderstandingofthestory.Usemodalverbswhennecessary.A:Ithinkit’skindofRoderickandOlivertogiveHenrythemoney.B:I’mafraidIdisagree.Theyshouldn’tbemakingabetonhim.A:ButHenrymightgetintotroubleiftheydidn’tofferhimthemoney.B:Well,iftheyreallywantedtohelpHenry,theycouldofferhimajob.A:Maybeyou’reright.ButIguessthatwouldbeadifferentstory...P544Suggestedconversation:ThepastfuturetenseThepastfuturetense以上句子都使用了

將來時，表示從

看將要發(fā)生的動作。過去過去一、概念過去將來時表示從過去的某一時間來看將來要發(fā)生的動作或呈現的狀態(tài)?？梢赃@樣理解：過去將來時的出發(fā)點是過去，即從過去某一時刻看以后要發(fā)生的動作或狀態(tài)。Shewassixty-six.Inthreeyears，shewouldbesixty-nine.她66歲了。三年后，她是69歲。動詞構成和用法：1)should/would(not)+V原形2)was/were(not)goingto+V原形3)was/were(not)to+V原形4)was/wereaboutto+V原形5)was/were+Ving-二、構成和用法1.should/would＋動詞原形(1)表示從過去某時看來將要發(fā)生的動作或存在狀態(tài)。常用于賓語從句中。Hesaidthathewouldwaitforusatthebusstop.他說他要在車站等我們。Shehopedthattheywouldmeetagainsomeday.她希望將來有一天他們能再見面。(2)表示過去的某種習慣性行為，只用would。Wheneverwehadtrouble，hewouldcometohelpus.每當我們遇到困難時，他總會給予幫助。2.was/were+goingto+動詞原形(1)表示根據計劃或安排即將發(fā)生的事。例1:Shesaidshewasgoingtostartatonce.她說她將立即出發(fā)。例2:Iwastoldthathewasgoingtoreturnhome.他告訴我他準備要回家。(2)還可表示根據當時情況判斷有可能但不一定會發(fā)生某事。例:Itseemedasifitwasgoingtorain.看來好像要下雨。3.“was/wereto＋動詞原形”表示曾計劃做某事，如果計劃的事情沒有實現，要用不定式的完成式。Shesaidshewastotakeuptheposition.她說她要承擔這個職務。Shesaidshewastohavetakenuptheposition，butlaterchangedhermind.她說她本打算承擔這個職務的，但是后來改變了主意。4.was/wereabouttodo表示“即將、正要”。

例句：（1）SoonourseasonwasoverandIwasabouttomove.很快的，我們的學期要結束了，我即將搬走了。（2）Iwasabout