高中英語 Unit1 Grammar課件2 重慶大學(xué)版必修3.ppt

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Whyistheroadsowet Itmusthaverainedlastnight musthavedone對(duì)過去的非常肯定的推測 語氣最強(qiáng) 對(duì)已發(fā)生的過去情況的推測 若陳述句謂語部分有 musthavedone 而且有表示過去的時(shí)間狀語 問句部分用didn t 1 Theymusthavegonetherelastnight didn tthey 2 Theymusthavearrivedbynow haven tthey 對(duì)已發(fā)生的過去情況的推測 若陳述句謂語部分有 musthavedone 若沒有表示過去的時(shí)間狀語 問句部分用haven t或hasn t 3 HemusthavebeentotheGreatWall hasn the 對(duì)已發(fā)生的過去情況的推測 若陳述句謂語部分有 musthavedone 若沒有表示過去的時(shí)間狀語 問句部分用haven t或hasn t 這個(gè)房間昨天肯定被清掃了 Theroom yesterday musthavebeencleaned 他一定已經(jīng)背了5000單詞了 He 5 000words musthavelearnt Youmusthaveseenthefilm JourneytotheWest haven tyou TheymusthavebeentotheWorldExpolastweek didn tthey A Wherearethegirls Couldtheyhavegonehome B No theycan thavegonehome It ssoearly canhavedone對(duì)過去的疑問推測 can thavedone對(duì)過去的否定推測 疑問句和否定句 WhereisJohn Canhehavegonetotheplayground No hecan thavegonetotheplaygroundItisraining MrKing theletter 金先生已經(jīng)收到那封信了嗎 No he it 不 他不可能收到 Can havereceived can thavereceived Look thelightsareoffintheirroom Wherehavetheygone Theymighthavegonetothecinema may mighthavedone某事有可能發(fā)生過 表示對(duì)過去的不太肯定的推測 語氣比musthavedone弱 用于肯定句和否定句 may的語氣比might稍強(qiáng) WheredidAdamgetthatnewfootball Hehasn tgotanymoney It apresent Afterall itwashisbirthdaylastweek A mighthavebeenB mightbe He outbecausethelightwason A maynothavegoneB mayhavenotgoneC maynotgoD mustnothavegone A Hereisadollforyourdaughter B Thankyousomuch It sbeautiful Butyouneedn thaveboughtit Youhaveboughtsomanyforher needn thavedone本沒有必要做某事 但此事已做 We theplantbecauseitrainedlastnight 本無必要 needn thavewatered Oh I mnotfeelingwellinthestomach Ishouldn thaveeatensomuchfriedchickenjustnow shouldn thavedone本不該做某事 但此事已做 表示責(zé)備 Heshouldhaverepairedthebikeyesterday shouldhavedone本應(yīng)該做某事 但此事未做 表示責(zé)備 你本應(yīng)該先完成你的作業(yè) You yourhomeworkfirst shouldhavefinished 你本不應(yīng)該跟我撒謊 You tome shouldn thavelied could havedone 本能夠 本可以做某事 但卻沒做他本能夠按時(shí)完成這項(xiàng)任務(wù)的 He thetaskontime buthedidn tdoit couldhavefinished Findingtherule Believingwhathappenedinthepastisthecase usedonlyinpositivesentences Itmusthaverainedlastnight indicatingthatsomethingwasapossibilityinthepast thoughitdidnotactuallyhappen negativeorinterrogativesentences Suggestingthatitispossiblethatsomethinghappenedorwastrue usedonlyinpositive negativesentences Theymighthavemistakenyou indicatingthatsomethingdidnot didhappen butthespeakerwishesithad not happened indicatingthatitisnotnecessaryforsb todosth thoughhe shedidit Youneedn thavewateredtheplant Itrainedlastnight 高考例析 1 SorryI mlate I haveturnedoffthealarmclockandgonebacktosleepagain 2000北京春季 A mightB shouldC canD will 答案為A 表推測的用法 句意 對(duì)不起 我遲到了 我 當(dāng)時(shí) 興許是關(guān)了鬧鐘又回去睡覺了 might相當(dāng)于may 但語氣更加不肯定 2 Iwasreallyanxiousaboutyou You homewithoutaword 01全國 A mustn tleaveB shouldn thaveleftC couldn thaveleftD needn tleave 答案為B 虛擬語氣用法 句意 我 那時(shí) 真地很擔(dān)心你 你本不應(yīng)該不留個(gè)話就離開家 3 I lltellMaryabouthernewjobtomorrow You herlastweek 04福建 A oughttotellB wouldhavetoldC musttellD shouldhavetold 答案為D 虛擬語氣用法 句意 我明天要告訴她我的新工作的情況 你本應(yīng)該上周告訴她 4 Tomgraduatedfromcollegeataveryyoungage Oh he havebeenaverysmartboythen 04全國IV A couldB shouldC mightD must 答案為D 表推測的用法 句意 湯姆很年輕的時(shí)候就大學(xué)畢業(yè)了 哦 他肯定是一個(gè)很聰明的男孩兒 5 He havecompletedhiswork otherwise hewouldn tbeenjoyinghimselfbytheseaside 05北京卷 A shouldB mustC wouldn tD can t 答案為B 用法同4題 句意 他肯定做完了工作 不然他就不會(huì)在海邊痛快地玩兒了 6 DoyouknowwhereDavidis Icouldn tfindhimanywhere Well He havegonefar hiscoat sstillhere 05湖北卷 A shouldn tB mustn tC can tD wouldn t 答案為C 表推測的用法 句意 你知道大衛(wèi)在哪兒嗎 我哪兒也找不到他 瞧 他不可能走遠(yuǎn) 他的上衣還在這兒呢 can t相當(dāng)與couldn t 但后者語氣更加委婉 練習(xí) ThewomanbiologiststayedinAfricastudyingwildanimalsfor13yearsbeforeshereturned Oh dear She alotofdifficulties 05江蘇卷 A maygothroughB mightgothroughC oughttohavegonethroughD musthavegonethrough 2 Ihavelostoneofmygloves I itsomewhere 05北京春季 A mustdropB musthavedroppedC mustbedroppingD musthavebeendropped 3 Mr White at8 30forthemeeting buthedidn tshowup 04廣西 A shouldhavearrivedB shouldarriveC shouldhavehadarrivedD shouldbearriving4 Hepaidforaseat whenhe haveenteredfree 05山東卷 A couldB wouldC mustD need 5 Tomisneverlateforwork Whyisheabsenttoday Something tohim 05江西卷 A musthappenB shouldhavehappenedC couldhavehappenedD musthavehappened6 I havebeenmorethansixyearsoldwhentheaccidenthappened 05天津卷 A shouldn tB couldn tC mustn tD needn t Choosethebestanswerforeachblank 1 Itoldhimthenewsjustnow Really You him Heknewitalready A shouldn thavetoldB mayhavetoldC needn thavetoldD couldn thavetold2 Ican tfindmypenanywhere I it That simpossible Isawyouwritingwithittenminutesago A mightloseB wouldhavelostC shouldhavelostD musthavelost C D 3 ThatmustbeJack Itcan tbehim He withinsuchashorttime Hesaidhewouldcallmeassoonashearrived mustn thavearrivedB shouldn thavearrivedC can thavearrivedD neednothavearrived4 WhereareJoanandMary Ithinkthey early A shouldhaveleftB musthaveleftC canhaveleftD needn thaveleft C B 5 Didyouseethatcarnearlyhitme I killed Yes Itwasgoingsofast Luckilyyourespondedquickly couldhavebeenB mayhavebeenC musthavebeenD was B 6 Mom Iswepttheflooramomentago Thankyou son Butyou it It snotverydirtyyet A shouldhavesweptB needn thavesweptC mayhavesweptD canhaveswept7 It ssodrythesedays Eventheplantisdead Yes You itmorewater A willgiveB shouldhavegivenC maysendD canhavebeensent B B 8 Johnpassedtheexam althoughhedidn tstudyverymuchforit Theexam difficult A can thavebeenB musthavebeenC couldn tbeD mighthavebeen9 Iwonderwhytheyarelate They thetrain A canmissB mayhavemissedC couldmissD mightmiss A B 10 He tohelpusyesterday buthedidn t Youmustforgivehim Hewasillyesterday shouldhavecomeB couldhavecomeC musthavecomeD canhavecome A Findandcorrectthemistakeineachofthefollowingsentences Sheshouldhadfinishedtheworkthreedaysago 2 Youarewetthrough Youshouldhavebeencaughtintherain Sheshouldhavefinishedtheworkthreedaysago Youarewetthrough Youmusthavebeencaughtintherain 3 Imusthavehelpedthem butIwasn tableto 4 Youmustn thaveseenthemoviebefore foritwasmadelastweek Ishouldhavehelpedhim butIwasn tableto Youcan thaveseenthemoviebefore foritwasmadelastweek 5 Allthelightswereoffatelevenlastnight Thestudentsmustn thavebeenstudyingintheclassroomuntiltwelve Allthelightswereoffatelevenlastnight Thestudentscan thavebeenstudyingintheclassroomuntiltwelve Fillineachblankwiththepresentperfectformofamodelverb 1 Husband Iboughtanewskirtforyou Wife Thankyou dear Butyou donethat I vegotsomany 2 Mother Who cookedthemeal Daughter ItmusthavebeenFather Mother Itcan thavebeenyourfather HetoldmehewasgoingtoChengduonbusinessthismorning have could canhave needn t 3 Policeman You stoppedattheredlight Whydidyoukeepondriving Driver I mterriblysorry Ididn tseethelight 4 Teacher Everyoneislisteningcarefully Whydidyoulookoutofthewindow Student I msorry I donethat shouldhave shouldn thave