高中英語 Unit1 Grammar課件1 重慶大學(xué)版必修3.ppt

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Grammar ModalVerbs must may should will haveto StudyingtheRule 1 A It shot isn tit B Yeah butitmayraintomorrow 2 A MayIsitonthischair B No youmustn t A Whynot B Becauseitisbroken 3 A TheflighttoNewYorkshouldbeleavinginafewminutes B Areyousure 4 A Sally youshouldbecarefulwhenyougooutatnight B OK Iwill 5 A Ihavejustwalked5kilometers B Youmustbeverytirednow 6 A WillyougivethistoElle please B Withpleasure 7 A It srainingcatsanddogsoutside B Really ThenIhavetotakeanumbrellawithme 8 A MustIhandinthehomeworknow B No youdon thaveto Youmayhanditintomorrowmorning 9 A Whenarewegoingtoleavethehotel B Wemustleavethehotelbefore6 00pm 總結(jié) 1 must與haveto的區(qū)別haveto比較強調(diào)客觀需要 must著重說明主觀看法 另外haveto能用于更多時態(tài) 比較下面的句子 Wehadtobethereat10 00 有時兩者都可以用 意思差別不大 e g Wemust havetoleavenow must在表示說話人對事物的推測時候要注意它比may肯定得多 相當(dāng)于漢語的 一定 或 準(zhǔn)是 只有在肯定句中能這樣用 Thismustbeyourroom 在回答由must引起的問題時 如果是否定的答復(fù) 不能用mustn t 而需要用needn t或don thaveto 因為mustn t是 一定不要 的意思 2 may的用法 a 表示 允許 或 請求 e g MayIcomein 在使用這一用法時需注意 may表示 允許 的否定形式是mustnot 意思是 不應(yīng)該 不許可 e g MayItakethisbookoutofthereading room No youmustn t b 表示說話人的猜測 認(rèn)為某一事情 或許 或 可能 發(fā)生 e g Hemayknowtheanswer c may用在感嘆句中可表示祝愿 愿望 e g Mayyousucceed 祝你成功 Mayyouhaveapleasantjourney 一路平安 3 should是shall的過去式 它可以用于過去時態(tài)中 但更多的是用作情態(tài)動詞 意思是 應(yīng)當(dāng) 應(yīng)該 用來表示義務(wù)或責(zé)任 此時 它不再局限于和第一人稱的代詞連用 而是三種人稱都能使用 例如 YoushouldanswermyquestioninEnglish 你應(yīng)當(dāng)用英語回答我的問題 Theyshouldn tbesocareless 他們不該如此粗心 It sraininghard Youshoulddriveslowly 雨下得很大 你開車要慢些 should還可以用在提供幫助 提出建議 要求 給予指示的句子中 例如 ShouldIhelpyoucarrythebasket 要不要我?guī)湍闾峄@子 WhatshouldIdoforthem 我應(yīng)當(dāng)為他們做些什么 應(yīng)當(dāng)注意的是 當(dāng)should表示上述兩種意思時 要重讀 4 will情態(tài)動詞aux 客氣提問 是否愿意 好嗎wordthatyousaywhenyouaskapolitequestion Willyoupassthesalt 請你把鹽遞給我 好嗎 Willyoupleasegivehimamessagewhenyouseehim 你見到他時捎個口信給他好嗎 Won tyoucomeinandhavealittletea 要不要進來喝點茶 Willyoupleaselendmeyourrubber 請借給我你的橡皮好嗎 表推測 1 must 一定 只用于肯定句中 Helookssopale Hemustbeill 2 can could用于肯定 否定 疑問句中 Itcan tbeMr Wang Hehaslefthere 3 may might可用于肯定 否定句中Theremaybesomedangerousanimalsontheisland 4 should 想必 Theyshouldbetherebynow 5 如果對過去發(fā)生的事情的推測要用完成時 Someonemusthaveopenedthecage Thelioncouldn thaveescapedonitsown 準(zhǔn)是有人把籠子打開了 獅子不可能自己跑出來 一般疑問句的肯 否定回答 1 Canyou 2 Mayyou Yes Ican Yes Imay No Ican t No Imustn t 3 Mustyou 4 Needyou Yes Imust Yes Imust No Ineedn t No Ineedn t No Idon thavetoNo Idon thaveto could might would等過去式用在疑問句表語氣委婉時 其回答要用原形 Couldyoutellmewhat sthematterwithyou Yes Ican Sure Certainly Ofcourse FindingtheRule GivingadviceSayingthatsomethingisnecessaryPolitelyaskingsomeonetodosomethingAskingsomeoneforpermissiontodosomethingSayingthatperhapssomethingwillhappen 4 7 6 2 1 6 Sayingthatsth willalmostcertainlyhappen aslongasnothingunexpectedstopsit7 Expressinganopinionaboutsomethingthatthespeakerisnotsureabout 8 Expressingobligation 義務(wù) andduties 9 Expressingneed 3 5 8 9 A Dowehavetofinishthisjobtoday B Yes you 2 Ifitisraining you takeanumbrellawithyou 3 Excuseme but Iaskyouaverypersonalquestion 4 Ican tbesure butI belatethisevening Sodon twaitforme ApplyingtheRule Completethefollowingsentenceswithmay should must willorhaveto must should must may may 5 A Youdon t returnthebooknow YoucankeepituntilnextMondayifyoulike B Thankyouverymuch 6 Thetrain behereanyminutenowbutyouneverknow 7 Excuseme but youpleasestayoffthegrass He stayathomebecausehisrightlegisbroken Listen Youreally givethistoMary It sveryimportant haveto should will hasto must 1 Askyourteacherforpermissiontoleaveschoolearlytomorrow ApplyingtheRule Makesentencesbyusingmay should mustwillorhaveto basedonthefollowingsituations MayIleaveschoolearlytomorrow 2 Adviseyourfriendtostudyharder Youshouldworkharder 3 Youareadoctor Tellapatientthatitisreallynecessarytotakeallthemedicine 4 Someoneasksyouthetime Youhaven tgotawatchbutyou resureit steno clock Youhavetotakeallthemedicine Itshouldbeteno clock 5 Someoneaskyouifitwillraintomorrow Youdon tknow Butitispossible 6 Youphoneisringing Youarebusy Politelyaskafriendtoanswerit Ihavenoidea Butitmayraintomorrow Willyoupleaseanswerthephoneforme Theplaneshouldarriveat12 00pm ifnothinggoeswrong 7 Youareastewardess Apassengerwantsyoutotellhim herthearrivaltimeinParis Youtellhim hertheplanewillalmostcertainlyarriveat12 00pm ifnothinggoeswrong 8 Yoursonisaloneathome Soyoutellyourfriendsatthepartyyouneedtogohomenow I mafraidIhavetoleavenowbecausemysonisaloneathome Self check 1 Iamnotsure butIthinkBob cometoseemetoday 2 Developedcountriesthinkthatdevelopingcountries acceptglobalization 3 Ifyouneedanyhelp I bethefirstonetogiveittoyou 5 Allofus learntobepoliteandshouldnotsmokeortalkloudlyinapublicplace may must will should 6 Let sgeteverythingreadynow Ourguests comeatanytimefromnowon 7 Look thelightison Bob beintheroomnow 8 IhopeJohn cometomorrow Ihavesomethingimportanttotellhim 9 Adults notberudetochildren Otherwise they berudetoadults 10 IsawMaryinthebookstoreafewminutesago She notbeintheclassroomnow may must will should will can t 1 Incrowdedplaceslikeairportsandrailwaystations you takecareofyourluggage 2007北京卷 A canB mayC mustD will2 HowisyourtouraroundtheNorthLake Isitbeautiful It be butitisnowheavilypolluted A willB wouldC shouldD must 高考鏈接 3 Shelooksveryhappy She havepassedtheexam Iguessso It snotdifficultafterall 2007 shouldB couldC mustD might