情態(tài)動詞主講老師：Demi老師Grammar課堂之1.什么是情態(tài)動詞？實義動詞：比如want、like、go等01動詞的分類，分為以下四大類：04情態(tài)動詞：can，should，must，may等03助動詞：do、does、did；will、shall；have、has等02系動詞：feel、taste、sound、look、smell（5個感官動詞）等；2.情態(tài)動詞知多少？cancouldmaymustneedshould情態(tài)動詞的幾大特點：cancouldmaymustneedshould情態(tài)動詞+動詞原形情態(tài)動詞否定后面直接+not情態(tài)動詞變疑問句，直接提前情態(tài)動詞無三單、無將來注意：haveto例外，用于第三人稱單數(shù)時變成hasto練一練--

peopletalkwithfriendsbyQQtwentyyearsago?--No,buttodaymostofus

dothat.A.Can;couldB.Could:canC.Could;couldD.Could;can'tB3.情態(tài)動詞基本用法cancouldVS能力beabletoVScan的過去式情態(tài)動詞=can/could一般現(xiàn)在時一般過去式一般將來時1.表能力

練一練1.They

dowellintheexam.A.canbeabletoB.beabletoC.canabletoD.areableto[題目解析]D選項；can與beableto不能連用A與C錯誤；DcancouldVSmayVS情態(tài)動詞2.表請求mightVS情態(tài)動詞肯定回答否定回答cancouldmaymightYes,youcan.Ofcourse.No,youcan'tNo,youmustn't(禁止)——Can/Could/MayIleavenow?——Yes,youcan/Ofcourse.——No,youcan't/No,youmustn't委婉程度：can——could——may——might練一練CChavetomustVS“不得不/必須”客觀條件限制(被迫)don'thaveto“不必”=needn't“必須”主觀條件限制(主動)mustn't“禁止”Youhavetofinishitin2minutes.Imuststudyhard.Youdon'thavetoworry.Youmustn'tparkhere.情態(tài)動詞3.表必要練一練3.I'mfeelingmuchbetternow,soyou

callhedoctor.A.can'tB.mustn'tC.don'thavetoD.haven'ttoC練一練-MayIplayoutsidenow,mum?--No,you

.You

doyourhomework.A.maynot;canB.can't;mayC.maynot;mayD.can't;mustDshouldhadbetterVSshould“應(yīng)該”shouldn't“不應(yīng)該”常用于糾正別人,提出或征詢建議+動詞原形hadbetterdosth“最好（做某事）”hadbetternotdosth“最好不（做某事）”Youshouldfinishyourhomework.Youhadbetteraskforhelp.Youshouldn'tdothat.Youhadbetternottellhereverything.情態(tài)動詞4.表建議練一練5.We

belateforschool.A.havetoB.don'thavetoC.hadbetternotD.hadbetternottoC練習(xí)DDC練一練5.We

belateforschool.A.havetoB.don'thavetoC.hadbetternotD.hadbetternottoC4.情態(tài)動詞問與答情態(tài)動詞知識點：can“能力”could為can的過去式can問can答，could問could答IcansingthisEnglishsong.——CanyouspeakEnglish?——Yes,Ican.——No,Ican't.情態(tài)動詞提問與回答???can能力情態(tài)動詞肯定回答否定回答cancouldmay知識點：can“請求”委婉程度：can——could——may——might情態(tài)動詞——Can/Could/MayIleavenow?——Yes,youcan/Ofcourse.——No,youcan't/No,youmustn'tYes,youcan.Ofcourse.No,youcan'tNo,youmustn't(禁止)mustn't天理不容語氣強烈

情態(tài)動詞提問與回答???can請求練一練--CouldIparkmycarhere?--

.A.Yes,youcanB.No,youcouldn'tC.Yes,youcouldD.No,Ican'tA易錯選項：B、C練一練--

Itakesomephotosinthehill?--No,you

.A.Can,needn'tB.Must,mustn'tC.Could,won't.D.May,mustn't.D情態(tài)動詞肯定回答否定回答must情態(tài)動詞——Must

Ifinishmyhomeworknow?——是的，你必須現(xiàn)在完成?！猋es,youmust.——不，你不必現(xiàn)在完成?！狽o,youneedn't/No,youdon'thavetoYes,youmustNo,youneedn'tNo,youdon'thaveto情態(tài)動詞提問與回答???must練一練—MustIgotoalawschoolandbealawyerlikeyou,Dad?—No,you

.Youarefreetomakeyourowndecision.A.can’t B.mustn’tC.shouldn’t D.needn’tD[題目解析D選項；must引導(dǎo)的一般疑問句做否定回答時用needn't。練習(xí)DDC5.情態(tài)動詞表推測Shecan'tbeDemi.She

maybeDemi.ShemustbeDemi..can't100%否定推測"不可能"情態(tài)動詞情態(tài)動詞表推測???maybe不確定推測"可能"must100%確定推測"一定"情態(tài)動詞序號原形過去式普通含義推測含義1maymight可能，也許可能，也許2cancould能力；請求/3can'tcouldn't不能，不可以不可能（100%確定）4willwould將要；一種意愿/5must/必須一定（100%確定）6mustn't/禁止7need/需要8needn't/不需要，不必9should/應(yīng)該情態(tài)動詞情態(tài)動詞表推測???6mustn't/禁止練一練She

knowthetruth,butI'mnotsure.A.maybeaybeC.mayD.mustCA.maybe?aybe?

C.may?true--truthmaybemaybeVS副詞，句首或者句末Maybesheisateacher.Sheisateacher,maybe(不常用)Shemaybeateacher.Shemaygotoshoptobuysomething.mayVS情態(tài)動詞+be,句中情態(tài)動詞，句中情態(tài)動詞練一練1.--

wegettothepartylate?--No,We

belatetodayA.Can;mustn'tB.Can;needn'tC.Must;needn'tD.Must;mustn'tA練一練2.--Isthatmanyourfather?--No,it

behim.HehasgonetoHongKongonbusiness.A:mustn'tB.maynotC.couldn'tD.can'tD[題目解析]：此題考查can't的100%否定推測"不可能"出差練一練3.--MustIhandinmyreadingreporttoday,Ms.Smith?--No,you_____handinthereporttoday.Youcandoittomorrow.A.mustn'tB.don'tneedC.don'thavetoC易錯選項B:

本題目中must作為情態(tài)動詞提問，回答需用情態(tài)動詞，而B選項中don'tneed是使實義動詞need的否定形式練一練4.Ithinkdogsareourfriends.They

lookafterourhome.A.canB.mightC.mustD.needA[題目解析]：此題考查can表示一種能力“能，能夠”練一練5.--Who'sthatgirlswimminginthepool?IsitMaria?--It____beMaria.Sheissleepinginthebedroomnow.'tC[題目解析]：此題考查can't的100%否定推測"不可能"小結(jié)情態(tài)動詞2實義動詞、系動詞、助動詞、情態(tài)動詞1.動詞分類2.四大特點+動詞原形否定后面直接+not變疑問句，直接提前無人稱和數(shù)的變化3.提問與回答can表能力委婉程度：can——could——may——might肯定回答：Yes,youcan./Ofcourse.否定回答：No,youcan't/No,youmustn't(禁止)could為can的過去式；can問can答，could問could答肯定：Yes,youmust否定：No,youneedn't/don'thaveto

can表請求情態(tài)動詞must提問與回答4.表推測can't100%否定推測"不可能"maybe不確定推測"可能"must100%確定推測"一定"5.maybe&may&maybe的區(qū)別情態(tài)動詞1cancouldbeableto