九年級英語上Unit8 Grammar focus-4c

Period34a-4cGrammarfocusSectionAUnit8ItmustbelongtoCarla.ReviewTranslatethephrases.outsidethewindowhavefunnext-doorneighboratfirstrunawayfeeluneasyhavenoideahavefun(in)doingsth.在窗外玩得高興隔壁鄰居最初；首先逃跑心神不安一點不知道；沒辦法做某事很愉快Itcouldbe__________.Italsomightbe______________.Canyouguesswhatitis?ThreebirdsabeautifulfaceCanyouguesswhatitis?Itcouldbe__________.Italsomightbe_________.awhitevasetwofacesItcouldbe______.Italsomightbe________.Canyouguesswhatitis?adogtwogirlsWhosevolleyballisthis?ItmustbeCarla’s.shelovesvolleyball.Whosehairbandisthis?ItcouldbeMei’shairband.OritmightbelongtoLinda.Theybothhavelonghair.Whatdidyouseethatnight?I’mnotsure,nutitcan’tbeadog.Itwasbigger.Ithinkitmightbeabearorawolf.GrammarFocusgrammarUse“must”toshowthatyouthinksomethingisprobablytrue.Use“might”or“could”toshowthatyouthinksomethingispossiblytrue.Use“can’t”toshowthatyouarealmostsuresomethingisnottrue.---Whosevolleyballisthis?---ItmustbeCarla’s.Shelovesvolleyball.---Whosebookisthis?---ItmustbeMary’s.J.K.Rowlingisherfavoritewriter.---Whosehairbandisthis?---ItcouldbeMei’s.Readthesentencesbelow,payingattentiontothecoloredparts.---Whosenotebookisthis?---ItmustbeMing’s.Ithashernameonit.---WhoseFrenchbookisthis?---ItcouldbeCarol’s.ShestudiesFrench.---Whoseguitaristhis?---ItmightbelongtoAlice.Sheplaystheguitar.---WhoseT-shirtisthis?---Itcan’tbeJohn’s.Itistoosmallforhim.Readmoresentences.mustcan’tcouldmight100%probablytrue20%-80%possiblytrue0almostnottrue

表示推測的情態(tài)動詞在英語中，表示對某件事物的確定程度，即表示推測的時候，我們通常會用到以下情態(tài)動詞，must,might,could,may,can’t,couldn’t.Learntomakeinference程度肯定句否定句疑問句must★★★★√may★★★√√might/could★★√√√√can’tcan★√√一.can和could的區(qū)別和用法1.can表示體力和腦力方面的能力,或根據(jù)客觀條件能做某種動作的“能力”。例如：

CanyouspeakEnglish？

Canyoumakeacake？

can用在否定句和疑問句中時有時表示說話人的“猜測”或“不肯定”。

Canthenewsbetrue？

(在日常會話中,can可代替may表示“允許”,may比較正式)2.could是can的過去式,表示過去有過的能力和可能性,還有懷疑和不肯定的意思(在否定和疑問句中)。

Shecouldn’tskatewhenshewasfiveyearsold.（能力）

Atthattimewethoughtthestorycouldbetrue．（可能性）

could用來提問,是有禮貌的請求Could....Please?語氣較為婉轉(zhuǎn)。

CouldIspeaktoMr.Smith,please?二.Might和may的區(qū)別和用法:1.may的用法:

a.表示”允許”或”請求”。

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，認為某一事情“或許”或“可能”發(fā)生。Hemayknowtheanswer．

c.may用在感嘆句中可表示祝愿、愿望。Mayyousucceed．(祝你成功。)Mayyouhaveapleasantjourney．(一路平安。)2.might的用法:a.might可以代替may,表示現(xiàn)在時間的動作，但語氣較為婉轉(zhuǎn)客氣或更加不肯定。

MightItakeasuggestion？

b.might用來表示現(xiàn)在時間時,還可表示”規(guī)勸”。YoumightpaymoreattentiontospokenEnglish．三.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。Wemusthavetoleavenow.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,相當于漢語的“一定”或“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，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。Choosethebestanswer1.Ididn’thearthephone.I___asleep.A.mustbeB.musthavebeenC.shouldbeD.shouldhavebeen2.Mary____beinParis.Isawherintownonlyafewminutesago.A.mustn’tB.shouldn’tC.can’tD.maynotBC3.Peter____comewithustonight,butheisn’tverysureyet.A.mustB.mayC.canD.will4.Ithoughtyou____likesomethingtoread,soIhavebroughtyousomebooks.A.mayB.mightC.couldD.mustBB1.-AreyougoingtoBeijingbyplane?-It’sfast,butexpensive.SoIamnotsure.I____takeatrain.A.shouldB.mayC.mustD.will2.-IsJohncomingbytrain?-Heshould,buthe____not.Helikesdrivinghiscar．A.must

B.can

C.may

D.need感悟中考3.

-____Iswiminthatriver?-No,you__.It’sdangeroustoswiminit.A.Must,can’t

B.Can,maynot

C.May,mustn’t

4.

Thestudents____playbasketballafterschooleveryday.A.allowto

B.areallowedto

C.wereallowedto感悟中考1.--Whosebookisthis?--ItmustbeMary’s.ItmustbelongtoMary.3.ThehairbandmightbelongtoLinda.mightbeLinda’s.2.--WhoseFrenchbookisthis?--ItcouldbeAli’s.ShestudiesFrench.4.TheT-shirtcan’tbeJohn’s.It’smuchtoosmallforhim.(肯定;一定)(可能)(可能)(不可能)1.A:Where’sJean?B:I’mnotsure.She_________(is/mightbe/mustbe)inthelaboratory.2.A:Everyoneisgoingtothepoolafterschool.B:Really?It_________(mustbe/can’tbe/couldbe)hotoutdoors.Choosethebestwaytocompleteeachsentenceusingthewordsinthebrackets.mightbemustbe4a3.A:That’sthephone.B:Hmm.Iwonderwhoit________(mustbe/couldbe/shouldbe).4.A:IwonderiftheseareJim’sglasses.B:They________(can’tbe/mightbe/couldbe)his.Hedoesn’twearglasses.5.A:Ihearwaterrunninginthebathroom.B:It_________(couldbe/mustbe/can’tbe)Carla.Shewasthinkingoftakingashower.couldbecan’tbemustbeCompletetheseresponses.1.A:Manypeoplearewearingcoats.B:Theweathermustbe________.2.A:Sallyhasbeencoughingalot.B:Shemightbe_______.A:Thisrestaurantisalwayscrowed.B:Thefood_____________.4.A:WheneverItrytoreadthisbook,Ifeelsleepy.B:Itcan’t________________.beinterestingcoldillmustbedelicious4bLookatthispictureofaroom.Howmuchcanyoutellaboutthepersonwholiveshere?Isitaboyoragirl?Whatarehis/herhobbies?Discussyourideaswithapartner.A:Itcouldbeagirl’sroombecauseit’sverytidy.B:Iguessso.Butitmightbeaboy’sroombecausetheclotheslooklikeboys’clothes.4cLookatthetworoomsbelow.Makeguessesabouttheownerofeachroom.Exercises【浙江湖州】—Who’ssinginginthenextroom?—It____beher.ShehasgonetoNewYork.A.can’tB.mustC.shouldn’tD.can【解析】考查情態(tài)動詞表推測。表示否定推測時，用can’t，意為“一定不……”。must表示推測時，意為“一定……”，用于肯定句；根據(jù)答語“她已經(jīng)去了紐約”可知是否定推測，故選A。中考鏈接【2011湖北黃岡】41.—WhoseT-shirtisthis?—It______beJohn's.It’s______smallforhim.A.can't;muchtooB.can't;toomuchC.mustn't;muchtooD.mustn't;toomuch【解析】情態(tài)動詞的用法。根據(jù)句意“它不可能是約翰的，對他來說太小了?！惫逝懦鼵、D，toomuch為“太多”的意思，muchtoo為“太”。故選A?！?013天津】—Whereareyougoingthismonth?—We______gotoXiamen,butwe'renotsure.A.needn’tB.mustC.mightD.mustn't【解析】needn’t(不必)表建議；must(一定)表猜測的可能性很大；might(可能，也許)表不是很肯定的猜測。mustn't(不允許)表命令。句意：---這個月你們將去哪？---我們或許去廈門，但還不確定。C【2013福建泉州】---Haveyoudecidedwheretogoforyoursummervacation?---Notyet.We_______gotoQingdao.It'sagoodplaceforvacation.A.mayB.needC.must【解析】句意：---你已經(jīng)決定到哪里過暑假了嗎？---還沒有呢，我們也許去青島，那是個度假的好地方。情態(tài)動詞表示推測時