情态动词对过去的推测高一英语外研版（2019）必修第二册

PastModalsofSpeculation情态动词对过去的推测

学科：英语

年级：高一

教材版本：外研社(2019)WelcometomyEnglishclass!Attheendoftheclass,youwillbeableto:Understandhowtousemodalverbstomakeguessesaboutthepast;Usemodalverbstotalkabouthowsureorunsureyouareaboutsomethingthathappenedinthepast.LeePeterWow,thatsoundssocool!DidyoutellSusanthegoodnews?Iwenttoherhouseatlunchtimeyesterdaytotellheraboutit,butshewasnotathome.Shecouldgooutforsomefood.I’mprettysureshewasabletogooutandgetsomefood.Whatdoyoumeanbythat?Imeanit’spossiblethatshewentoutforsomefoodatthattime.Oh,youmeanshecouldhavegoneoutforsomefood?Yes,you’reright!Heybro!Iheardthatyou’reabouttocomebacktoChinatomorrowforthe2022WinterOlympics.Yeah,I’llbeavolunteerinBeijingandIhopeIcanmeetmyfavoriteathletesthere.PeterwasconfusedwhenLeesaid“shecouldgooutforsomefood”.“Shecouldgooutforsomefood”=Shehadtheabilitytogooutforsomefood.“Shecouldhavegoneoutforsomefood”=It’spossiblethatshewentoutforsomefood.PeterwasconfusedwhenLeesaid“shecouldgooutforsomefood”.“Shecouldgooutforsomefood”=Shehadtheabilitytogooutforsomefood.“Shecouldhavegoneoutforsomefood”=It’spossiblethatshewentoutforsomefood.PastModalsofSpeculation

might+makingguessesperfectinfinitivemodalverbbaseformpastparticiplegowentsimplepastpastparticiplegonehavedone1.Ifwespeculateaboutsomethingthatcertainlyhappened,weuse“musthavedone”.PeterwenttoLee’shousenextmorningbutcouldn’tfindhim.HethoughtLeemusthaveleftforChinaonanearlymorningflight.2.Ifwespeculateaboutsomethingthatpossiblyhappened,weuse“could/may/mighthavedone”.Excuseme,myname’sEileenGu.Imayhaveleftmykeycardinmyroom.Couldyouopenthedoorformeplease?Oh,myGod!IsthatEileenGu?Sheismyfavoritefemaleathlete!3.Ifwespeculateaboutsomethingthatcertainlydidnothappen,weuse“can’t/couldn’thavedone”.Surprise!Mum,Imissyousomuch!Oh,no!Whyisthedoorwideopen?Someonemusthavebrokenintomyhouse!AccordingtoLee’smum’sreactionthatnight,shecouldnothaveleftherdoorwideopen.4.Ifwespeculateaboutsomethingthatpossiblydidnothappen,weuse“may/mightnothavedone”.

Wedon’tuse“couldn’thavedone”withthismeaning.“can’thavedone”Wow!ThatmustbeSuYiming.Heseemsalittletiredtoday.Hemaynothavesleptwelllastnight.

HappenedDidn’thappenCertainlymusthavecan’t/couldn’thavePossiblycould/may/mighthavemay/mightnothaveTrytofinishthefollowingconversationwiththem.Yiming,Congratulations!Yourparents_____________socalminsuchastressfulsituation.They____________quitenervous.Butyoufinallymadeit.What’sthesecretofyoursuccess?Mostpeople___________hadhighexpectationsforme.ButIhadhighexpectationsformyself.ThatisprobablythereasonwhyIsucceededeventually.musthavebeencan’thavebeenmaynothaveIjustwanttobeastrongfemalerolemodelforallyounggirlsinChinaandtoshowthemwhatispossiblewhenyouhavethecouragetodreambigandfollowthesedreams!Afewmonthsago,wordonthestreetwasthatyou__________consideredskiingfortheAmericanteam.ButyoueventuallydecidedtocompeteforChina!Why?mighthaveHomeworkAfterwinningtheOlympicgoldmedal,SuYimingwasinvitedbacktohishighschooltogiveaspeechonFebruary18,whichishi