Unit+2+Let's+celebrate!+Using+language高一英語外研版（2019）必修第二冊+

Whatisit?GuessItmaybe...Itcan'tbe...Itmustbe...Itcouldbe...Lookatthesentencesfromthereadingpassageandanswerthequestions.Activity1aThatiswhyLettersfromFatherChristmascouldbetheperfectbook…bThechildrenmusthavebeenveryexcitedastheyopenedit.c…theymightnotreceivetheirpresentsiftheywerenotgood.1.ThatiswhyLettersfromFatherChristmascouldbetheperfectbook...那就是為什么《圣誕老人的來信》可能是一本完美之書……2.Thechildrenmusthavebeenveryexcitedastheyopenedit.當(dāng)孩子們打開它的時候一定很興奮。3....theymightnotreceivetheirpresentsiftheywerenotgood.如果他們表現(xiàn)不好，他們可能收不到禮物。3....theymightnotreceivetheirpresentsiftheywerenotgood.如果他們表現(xiàn)不好，他們可能收不到禮物。2.Thechildrenmusthavebeenveryexcitedastheyopenedit.當(dāng)孩子們打開它的時候一定很興奮。1.ThatiswhyLettersfromFatherChristmascouldbetheperfectbook...那就是為什么《圣誕老人的來信》可能是一本完美之書……Whatdothewordsinblueindicate:anorder,request,abilityorpossibility?Lookatthesentencesfromthereadingpassageandanswerthequestions.Activity1aThatiswhyLettersfromFatherChristmascouldbetheperfectbook…bThechildrenmusthavebeenveryexcitedastheyopenedit.c…theymightnotreceivetheirpresentsiftheywerenotgood.命令要求能力可能性couldbe

:indicatepossibilitymustbe:indicate

surenessmightbe

:indicatelesspossibility情態(tài)動詞+動詞原形，表示對現(xiàn)在的推測2.Thechildrenmusthavebeen

veryexcitedastheyopenedit.當(dāng)孩子們打開它的時候一定很興奮。Possibility:______>_________>____________mustcan/couldmay/mightnot>_____________>_____________can’t/couldn’tmay/mightTranslationThatiswhyLettersfromFatherChristmascouldbetheperfectbook...Thechildrenmusthavebeenveryexcitedastheyopenedit.這就是為什么《圣誕老人的來信》可能是一本完美的書。孩子們打開它的時候一定很興奮。情態(tài)動詞+do，表示對現(xiàn)在的推測情態(tài)動詞+havedone，表示對已發(fā)生情況的推測情態(tài)動詞(modals)沒有_____、_____的變化必須和____________構(gòu)成謂語用來表示______、_______、______人稱數(shù)其他動詞態(tài)度愿望推測musthavebeen:quitesureaboutthestatement（十分肯定）couldhavebeen:notverysureaboutthestatement（不是非常確定）mighthavebeen:notsureaboutthestatement（不確定）情態(tài)動詞+現(xiàn)在完成時（have+動詞的過去分詞），表示對已發(fā)生情況的推測情態(tài)動詞+動詞原形can肯定句表示客觀可能性，意為“可能”Asahumanbeing,anyonecanmakeamistake.否定句/疑問句表示對現(xiàn)在的動作或狀態(tài)進行主觀的猜測，意為“可能”Hecan’thavealotofmoney.情態(tài)動詞+動詞原形could意為可能語氣緩和Hecouldbeonhiswayhome.may意為也許，可能語氣較弱Hemaybeverybusynow.might意為或許，可能語氣比may更弱Theymighthavealotofworktodonow

butI’mnotsure.情態(tài)動詞+動詞原形must肯定句表示猜測，意為“準(zhǔn)是，一定”Lookathisnewcar.Hemusthave

alotofmoney.否定句

意為“禁止，不允許”Hemustnotleavehisroom.情態(tài)動詞+完成式can否定句過去不可能做Hecan’thaveforgotten

it.could肯定句過去有可能做Shecouldhavegone

outwithsomefriends.may/might肯定句過去也許做了It’stoolate.Ithinkhemayhavegone

tobed.must肯定句過去一定做了Itmusthaverainedlastnight,fortheroadiswet.Pleaserewritetheunderlinedsentencesintheconversationusingcan/could,may/might

andmust.(P22)Chris:Ispentagesputtingupallthe

balloonsandflowerslastnight.Jean:Iexpectyouarefeelingtirednow!Chris:Yes,Iam.Look,thatguyisdressedasBatman.IsthatMike?Jean:It’spossiblyhim.

Checkoutthatgirlovertheredressedasabride.I’msurethat’sLucy.Youmustbetirednow!Itmay/might/couldbehim.ThatmustbeLucy.Chris:No,Idon’tthinkthat’sLucy.

Lucyisn’tthattall.Jean:Lookatthosetwoguysdressedaschickens!Oh,they’rewavingatus!Maybethey’refromour

school.Chris:Let’sgoandfindout.thatcan’tbeLucy.Theymay/might/could

befromourschool.

Lookatthepictureandmakeasmanysentencesaspossibleusing

can/could,may/might

andmust.(P22)Activity3Lookatthepictureandmakeasmanysentencesaspossibleusingcan/could,may/mightandmust.Groupwork

Themanwithawalletinhishandmightbeabitunwillingtopay.

Thewomaninredmustbeveryexcitedtobuysomanythings.

Thewomanwithglassesmaybevery