Unit2Let'scelebrate!Usinglanguage課件高中英語

Unit2Let’scelebrate!UsinglanguagebyAdaUsinglanguageModels(2)

1Lookatthesentencesfromthereadingpassageandanswerthequestions.a.That’swhyLettersfromFatherChristmas

couldbetheperfectbook...b.Thechildrenmusthavebeenveryexcitedastheyopenedit.c....theymightnotreceivetheirpresentsiftheywerenotgood.UsinglanguageModels(2)

1Lookatthesentencesfromthereadingpassageandanswerthequestions.1.Whatdothewordsinboldindicate:anorder,arequest,abilityorpossibility?Thewordsinboldindicatepossibility.UsinglanguageModels(2)

1Lookatthesentencesfromthereadingpassageandanswerthequestions.2.Willthemeaningofsentence(a)changeifwereplace”could”with“must”or“might”?Yes,itwill.UsinglanguageModels(2)

1Lookatthesentencesfromthereadingpassageandanswerthequestions.3.Whathappensifwechange“must”and“might”insentences(b)and(c)into“could”?Ifwechange“must”insentence(b)into“could”,itmeansthespeakerisnotsureaboutthestatement,andit'sonlyapossibility.Ifwechange"might"insentence(c)into"could”,itmeansit'simpossibleforthechildrentoreceivetheirpresents.Usinglanguage

Models(2)2.Rewritetheunderlinedsentencesintheconversationusingcan/could,may/mightandmust.(Atafancydressparty)Chris:Ispentagesputtingupalltheballoonsandflowerslastnight.Jean:Iexpectyouarefeelingtirednow!Chris:Yes,Iam.Look,thatguyisdressedasBatman.IsthatMike?Jean:It’spossiblyhim.Checkoutthatgirloverthere.

I’msurethat’sLucy.Chris:No,Idon’tthinkthat’sLucy.Lucyisn’tthattall.Jean:Lookatthosetwoguysdressedaschickens!Oh,they’rewavingatus.Maybethey’refromourschool.Chris:Let’sgoandfindout.Youmustbetirednow.Itmay/might/couldbehim.ThatmustbeLucy.Thatcan’tbeLucy.Theymay/might/couldbefromourschool.Usinglanguage

Models(2)3.Lookatthepictureandmakeasmanysentencesaspossibleusingcan/could,may/mightandmust.BlackFridayisoneofthebusiestshoppingdaysoftheyear.Storeshavebigsalesandopentheirdoorsveryearly.Thewomaninredmustbeveryexcitedtobuysomanythings.Themanwithawalletinhishandmightbeabitreluctanttopay.Usinglanguage

2.常用的情態(tài)動(dòng)詞包括：can(could),may(might),will(would),shall(should),must,need,dare,hadbetter,oughtto,usedto等。Modals情態(tài)動(dòng)詞1.本身具有一定的詞義，不能獨(dú)立作謂語，必須和動(dòng)詞原形一起構(gòu)成謂語。Usinglanguage

3.Modalsindicatepossibility.情態(tài)動(dòng)詞+動(dòng)詞原形1)can+動(dòng)詞原形A.用于肯定句，表示客觀可能性，意為“可能”,從理論上看是可能的，但不一定會(huì)發(fā)生。作為人類，任何人都有可能犯錯(cuò)。Asahumanbeing,anyonecanmakeamistake.Usinglanguage

3.Modalsindicatepossibility.1)can+動(dòng)詞原形B.用于否定句或疑問句，表示對現(xiàn)在的動(dòng)作或狀態(tài)進(jìn)行主觀的猜測，意為“可能”，或表示驚異、懷疑等態(tài)度.他不可能有很多錢。Hecan'thavealotofmoney.Usinglanguage

3.Modalsindicatepossibility.2)may+動(dòng)詞原形表示主觀的推測，意為“或許”用于肯定句和否定句均可。他現(xiàn)在可能很忙。Hemaybeverybusynow.他可能不在家。Hemaynotbeathome.表示可能性時(shí)，can't語氣較強(qiáng)，表示“不可能”；maynot語氣較弱，表示“可能不，或許不”。Usinglanguage

3.Modalsindicatepossibility.3)might+動(dòng)詞原形表示推測，意為“可能”，可以指過去的情況，也可以指現(xiàn)在的情況，但語氣比may更加不肯定。用于肯定句或否定句均可。他們現(xiàn)在可能有很多活兒要干，不過我不確定。TheymighthavealotofworktodonowbutI'mnotsure.Usinglanguage

3.Modalsindicatepossibility.4)could+動(dòng)詞原形意為“可能”，可以指過去的情況，也可以指現(xiàn)在的情況，語氣緩和。多用于否定句或疑問句。他看起來很年輕，不可能超過50歲。Helooksyoung.Hecouldn'tbeover50.Usinglanguage

3.Modalsindicatepossibility.5)must+動(dòng)詞原形表示猜測，意為“準(zhǔn)是，一定”通常用于肯定句。瞧他那輛新車。他肯定很有錢。Lookathisnewcar.Hemusthavealotofmoney.Usinglanguage

3.Modalsindicatepossibility.情態(tài)動(dòng)詞+完成式1)must+havedone表示對已發(fā)生情況的推測，通常用于肯定句。Shemusthavegonehome.她肯定已經(jīng)回家了。Usinglanguage

3.Modalsindicatepossibility.2)can+havedone表示對已發(fā)生情況的推測，主要用于否定句或疑問句。Youcan'thaveforgottenher.你不可能已經(jīng)忘記她了。Usinglanguage

3.Modalsindicatepossibility.3)could+havedone表示對過去情況的推測，多用于否定句或疑問句。Hecouldnothavebeenmorethan16atthattime.他當(dāng)時(shí)不可能超過16歲。Usinglanguage

3.Modalsindicatepossibility.4)may/might+havedone表示對已發(fā)生事情的不肯定的推測，might相比may語氣更加不肯定。他可能是坐火車來的。Usinglanguage

3.Modalsindicatepossibility.Exercises

1.[2020·天津卷]Jimsayswe

stayinhishouseaslongasweleaveitcleanandtidy.2.[2020·全國Ⅲ卷]ThewiseoldmantoldhimtotraveltotheLiRiver—perhapshe

learnalittlefromthegreatestartistintheworld.3.[2020·新高考全國Ⅰ卷]Doyouwanttobeagoodpublicspeaker?Herearesomeprinciplesyou

master.can/maycouldmustUsinglanguage

3.Modalsindicatepossibility.Exercises

havedonecancanUsinglanguage

3.Modalsindicatepossibility.Exercises

7.[