高中英語必修3-Unit-2-《Healthy-eating》課件

HealthyEatingperiod1Warmingup&readingWarmingUp

1.Matchthefoodwiththefestivals

itisforMooncake

ZongziDumplings

YuanxiaoChocolateTurkeyPumpkinLanternFestivalSpringFestivalThanksgivingDayDragonBoatFestivalMid-autumnFestivalStValentine’sDayHalloweencornfisheggsfruitsWhatdoweeatinourdailydiet?carrotscucumbercabbage

tomatoessweetschocolatepotatochipsricedumplingsnoodlescakepizzahamburgerWhatcanwegetfromthefood?sugar,starch,protein,fat,fibre,vitamin,minerals,etc.fruitsFibre&vitamin&sugarWhichfoodisrichin…?vegetablesFibre&vitaminproteinfat&sugarjunkfood:

friedchicken,chocolates,ice-cream,sugar,chips,…h(huán)ealthyfood:

fruits,vegetables,fish,meat,noodles,dumplings,…2.Whatisyourfavoritefood?Isitjunkfoodorhealthyfood?Usefulwordsfat,sugar,vitamin,protein,fibre,mineral,UsefulstructuresIlike…verymuch/best.Ithink…is/arejunk/healthyfood,becauseit/theyhas/have/contain…is/arehigh/richin…is/arelow/poorin…Classifythefoodsweusuallyeatinthefollowingway:

foodstogiveyouenergy

foodsfoodstogrowbonesandmuscle

foodsthatgivefibrefordigestionandhealthFoodstogiveyouenergy:

fastenergyfoodnoodlesricebreadFoodtogrowbonesandmuscle:meatporktofuFoodsthatgivefibrefordigestionandhealth(protectivefoods)vegetables;beans;cucumbers;mushroomsWhatwillhappenifwedon’teatabalanceddiet?Ilikethethings!!Iofteneatthem!Idonotlikethematall!!COMEANDEATHEREPresentationLookatthetitleofthereadingpassageandthepictures.Predictwhatthepassageisabout.Pre-readingFastreadingReadthetextquicklytofindoutwhichsentenceisthemainideaofthetext.1.Thetworestaurantssuppliedthehealthyfood.2.ThereasonwhyYongHui’srestaurantwassopopularwithcustomers.3.WangPengfoundoutwhyhehadlosthiscustomeranddecidedtowinthemback.LanguagePointsforReadingⅠ

2)Thegovernmentprovidedplentyof______anddrinktothepeoplewhosufferedfromtheflood.foodEverybodyhastoeat,butdoyoueatahealthy

diet?diet指的是習(xí)慣的食物或規(guī)定的食物，特指維持健康的定量或定質(zhì)的食物。

food是一般的用語，凡能吃能喝的具有營養(yǎng)的東西都稱為food.強調(diào)種類時，food可用復(fù)數(shù)3)AsI’mtoofat,thedoctorhasorderedmeaspecial_______. 4)Proper_______andexercisearebothimportantforhealth.

5)abalanceddiet____________

beonadiet____________均衡飲食alow-fatdiet節(jié)食dietdiet1.Dietcuresmorethanadoctor.2.ThebestphysiciansareDr.Diet,Dr.Quiet,andDr.Merryman.

食物治療勝過于醫(yī)生的治療(藥補不如食補)。

節(jié)食博士，靜心博士，歡喜博士，三者都是最好的醫(yī)師(飲食少,休息好,快樂多是卻病延年之方).balance1)v.權(quán)衡、平衡、對比

eg:1)Wemustbalancethetwoplans.2)Canyoubalanceyourselfonskates?2)n.天平、稱

eg:hebalance用天平稱……beoutofbalance不平衡keepone’sbalance保持平衡loseone’sbalance失去平衡afavorablebalance入多于出aunfavorablebalance入不敷出幽默英語單詞速記

旅游去趟France(法國)

巴黎舞廳dance(跳舞)

正在大步advance(前進)

忽見美女glance(匆匆一看)

腳下失去balance(平衡)

踩高跟鞋抓住了chance(機會)

(假裝失足，找機會接近。)unbalancev.使心情紊亂n.失去平衡

energyn.能量，精力，干勁Energy物理定義“能”。用于人時，指人的能力，精力，多做不可數(shù)名詞。Power影響力，勢力，政權(quán)；電力，動力。Force

自然力，物理力(inforce有效)strength身體的力量，人的強點，長處，力氣1Billwasdoingalotofphysicalexercisestobuilduphis_________.2Tomisa(n)_______boy;heisalwaysplayinghard.3The____ofpeacebecomesstronger.4Toregaintheir____afteranexhaustinggame,theplayerslayinthegrass.5Knowledgeis_______.strengthenergeticforceenergystrength/power1.WangPengsatinhisemptyrestaurant________________________1)Norastoodatthebusstop,__________________

娜拉站在公共汽車站旁看報紙。

______________________________,youcanhaveabetterviewofthecity.站在山頂上，你能更好地看到這個城市。readinganewspaper.

Standingonthetopofthehillfeelingveryfrustrated（做伴隨狀語）3）Manyofus,____,couldnotgotosleepthatnight.beingsoexcitingB.besoexcitingC.beingsoexcitedD.besoexcited

4）“Wecan’tgooutinthisweather,”saidBob,____outofthewindow.A.lookingB.tolookC.lookedD.havinglooked3.“Nothingcouldhavebeenbetter,”hethought.=1)Heisthetallestboyinhisclass.=___________________________________2)A:Howareyougettingon”B:EverythingisOK.=_________________________(再好不過了）Heistallerthananyotherboyinhisclass.

Nothingcouldbebetter.

Allhisfoodscouldhavebeenthebest.此句用比較級形式表最高級的意義結(jié)構(gòu):否定詞+adj./adv.的比較級Ican’tagreemore.

我完全贊同。seesb.doingsth.看到某人正在做某事seesb.dosth.看到某人做某事(看到整個過程)Isawathiefstealingsomethingintheshop.Isawathiefstealsomethingfromtheshop.be/gettiredof對……厭煩betiredwith因..感到疲勞SamuelJohnson

（塞繆爾·約翰遜）:Whenamanistired___London,heistired___life;forthereisinLondonallthatlifecanafford.

ofofWeweretired____theextrawork.withCuriositydrovehiminside.v.駕駛,驅(qū)使,迫使Hedrovehiscarroundthecorner.Thenoisealmostdrovememad.curiosityn.

outofcuriosity出于好奇adj.curious

becuriousaboutsth.becurioustodosth.It

cost

morethanagoodmealinhisownrestaurant.cost 表花_____，作主語的是______Sth.cost/costs(sb.)sth.spend 既可指花_____，又可指花_____。在主動

語態(tài)作主語的應(yīng)當(dāng)是_____,賓語可以是

money,energy,time

常用句型為：

1）sb.+spend+賓語+on+sth.

2）sb.+spend+賓語+(in)doingsth.“錢”“物”“時間”“錢”“人”take一般表花______，常用于句型:___________________________pay 一般表_______，在主動語態(tài)中做主語

的應(yīng)當(dāng)是______，其賓語有三種形式：

sb. sb.pay(s)/payedsomemoney sb.somemoney

for

sth.“付錢”“人”“時間”Ittakessb.sometimetodosth.1)Somepassengerscomplainthatitusually______solongtofillintravelinsurancedocuments.

A.costsB.takesC.spendsD.pays2)

我騎單車到學(xué)校要花20分鐘。

____________________________________________________________________________

Ispend20minutesingoingtoschoolbybike.Ittakesme20minutestogotoschoolbybike.

3)

____________________________________

每年她在書上的花費大約一千美元。4）她付給他20元買了一件襯衫。

____________________________________5)老板已付給我1000元了。

_____________________________________

Everyyearshespendsabout$1000onbooks.Shepaidhim10yuanfortheshirt.

Thebosshaspaidme1000yuan.

Hecouldn’t

haveYongHui

gettingawaywith

tellingpeoplelies!havesb.doingsth.

使某人一直做某事Eg:Shehadusworkingdayafterday.Iwon’thaveyouwaitinglong.havesb.do

使某人做某事表示動作的完成或可能發(fā)生havesth.todo

有某事要做havesth.done

使某事被做

sth.為身體一部位時，意為“受傷”Eg:1)Theyhadmerepeatthemessage.2)Iwon’thaveyousaysuchwords.3)Ihavealotofworktodo.4)Ihadmywatchfixedyesterday.5)Shehadherlegsbrokenwhenshegotoffthebike.getawaywithdoingsth.:(不用于被動語態(tài)）①notbepunishedforsth.做了某事而不受懲罰

Iwon’t____________________________________我不能容忍你們考試作弊而不受懲罰。②stealsth.andescapewithit.攜帶…跑掉

Therobbers________________________________這些盜賊搶了銀行，攜巨款潛逃。haveyougettingawaywithcheatingintheexam..robbedthebankandgotawaywithalotofmoney.③receivearelativelylightpunishment受到輕微懲罰Hewassolucky____________________________

他犯了如此嚴(yán)重的錯誤，僥幸只交了罰款了事。togetawaywithafineforsuchaseriousmistake.

Hehadbetterdosomeresearch.researchn.&v.研究；調(diào)查；探索doresearchinto/on對……進行研究／調(diào)查researchinto/in/on對……進行研究／調(diào)查①他們正在對一些社會問題進行調(diào)查研究。Theyaredoingsomeresearchonsomesocialproblems.②他們的研究證明了什么?Whathavetheirresearchesshown?③他們正在研究如何改進人們飲食的方法。They'reresearchingintowaysofimprovingpeople'sdiet.

Thecompetitionbetweenthetworestaurantswason!on作副詞與be連用時，可以表示以下幾個意思：(1)(電燈、水等)開著(2)正在進行，舉行(3)上演，演出

燈都亮著。①Thelightswereallon.他們家的電視總是開著。②TheTVisalwaysonintheirhouse.③電影院在上演什么片子?What'sonatthemovies?④ThefilmhadbeenonforfiveminuteswhenIgottothecinema.Perhapshewouldbeabletoearnhislivingafterallandnothavetoclosehisrestaurant.

也許他仍然能夠謀生,而不至于關(guān)張了。earnone’livingby...=liveby...=makealivingby...Heearnedhislivingbybeggingfromdoortodoor.Explanation表示“謀生”的短語：earnalivingearnone’slivingmakealivingmakeone’sliving2)earnvt.

掙得；贏得Hissuccessearnedhimaprize.Heearnedfamebyhelpingthestudents.Heandhiswife___20yuananhour.A.toearnB.earnC.spendsD.takesB2.Hedidnotlookforwardtobeingindebtbecausehisrestaurantwasnolongerpopular.他可不希望由于餐館不受歡迎而負(fù)債。

debt:【C】sumofmoneyowedtosb.thathasnotyetbeenpaid債務(wù);欠款beindebt:ownalotofmoneybeoutofdebt:notowealotofmoneybeinsb.’sdebt:feelgratefultosb.forhishelp1)_____________________________________

你救了我的命,我永遠(yuǎn)感恩不盡.2)

_____________________________________whenIgetpaid.

現(xiàn)在我欠債累累，但希望發(fā)工資后能付清 Yousavedmylife,Iamforeverinyourdebt.I’mheavilyindebtatthemoment,buthopetobeoutofdebtI.Dividethewholepassageintothreeparts,andgivethegeneralideaofeachpart

.ComprehendingExercisesPart1Part2Part3WangPeng

isworriedbecausehisrestaurantisnotasfullasusuallyis.Hefollowshisfriendtoanewlyopenedrestaurantwhichisverypopular.Worried,hedoessomeresearchtowinhiscustomersback.ParagraphI:1.

WhoisWangPeng?2.Whathappenedonthatstrangemorning?3.

Howdoyoulikethefoodinhisrestaurant?Heisarestaurantkeeper.Therewasnocustomerinhisrestaurantthatmorning,whichwasunnatural.Itisdeliciousbutitcanmakeusgetfatquickly.

ParagraphII:1.

WhatdidWangseewhenhefollowedLiChang?2.

Whatkindoffoodwasservedinthisrestaurant?Hesawthatanewrestaurantwasopenedandtherewasasigninitswindow.Onlyslimmingfoodwasservedthere.ParagraphIII:1.WhoisYongHui?2.WhatamazedWanginYongHui’srestaurant?Sheistheownerofthenewrestaurant.ThemenuandthepriceinYong’srestaurantamazedhimverymuch.3.WhatdidWangdecidetodoafterheleftthere?Hedecidedtogotolibrarytofindoutwhetherhisrestaurant’sfoodmadepeoplefat.ParagraphIV:1.WhatdidWangfindoutafterreading?2.Whatdidhedothen?HefoundoutthatYongHui’srestaurantwasnotgivingitscustomersenergy-givingfood.Hewroteasigntowinhiscustomerback!3.Whathappenedafterwards?Thecompetitionbetweenthetworestaurantswason.1.UsuallyWangPeng’srestaurantwasfullofpeople.TTRUEorFALSE:2.YongHuicouldmakepeoplethinintwoweeksbygivingthemagooddiet.Fnotgivingthemenergy-givingfood.3.WangPeng’sregularcustomersoftenbecamefat.T4.YongHui’smenugavecustomersmoreenergy-givingfood.Ffibre5.WangPeng’smenugavecustomersmoreprotectivefood.Fenergy6.WangPengdecidedtocompetewithYongHuibycopyinghermenu.FrewritehisownsignWangPeng’srestaurantYongHui’srestaurantFooddrinkmuttonkebabs;roastpork;stir-friedvegetables;friedricerawvegetables;fruitcola;icecreamwaterIII.Comparethetworestaurants:pricestrengthofthedietweaknessofthediet

expensivecheapgivingitscustomersenergy-givingfoodmakeitscustomersthincausethecustomerstobefatthecustomersbecometiredquicklySummary:WangPengfelt_________inanemptyrestaurantbecauseno__________havecometohisrestauranteversincehegotupearlyinthemorning.Hewantedtofindoutwhy.Hehurriedoutand________LiChangintoanewly-openedrestaurant.HefoundthattheownernamedYongHuiwasserving____________foodstomakepeoplethin.Drivenby________,WangPengcame_______totakeacloseatfrustratedfollowedcuriosityforwardcustomersslimming/fiberthemenu.Hecouldnoteven______hiseyes.Hewas_______atwhathesaw.Hehurriedoutsideandwenttothe______todosome________.Afteralotofreading,he_______thatYongHui’sfoodmadepeoplebecome_____quicklybecauseitwasno____________food.ArrivinghomeWangPengrewrotehisownsign.The_________betweenthetworestaurantswason!believeamazedlibraryresearchrealizedtiredenergy-givingcompetitionTalkingUsefulexpressionsPatient

I’mworryingaboutbeingtoofat.There’ssomethingwrongwithmyweight/stomach/mydietWhatshouldIdo?DoctorWhat’sthematter?Youmust/mustnot…Whatseemstobethetrouble?Isupposeyouhadbetter…Ithinkyououghtto…Homework1.Retellthetext.(1)Usethefirstpersontoretellthestory.(2)Trytouseproperprepositionsand conjunctions.2.PrepareforthelanguagelearninganddoUsingWordsandExpressionsonWB(Page49and50).ConclusionHealthyEatingperiod2Learningabout

LanguageWarmingUp

Preparefor“discoveringusefulwordsandexpressions”onpage12.Ex1.lie2.getawaywith3.raw4.curiosity5.customer6.benefitEx2.2.oughtto4.diet5.raw8.balanced9.energetic10.slimbecomethinner—loseweight3.beinglaughedatbyherfriends—losingface6.feltsosadandhopelessaboutherself—loseheart7.wasunwillingtovisitanymore—loseinterestinvisitingPreparefor“Discoveringusefulstructures”onpage13.Ex2.oughtto;shouldn’t;needn’t;don’thaveto/needn’t;will2.haveto;mustn’t3.oughtto;shouldPresentation

Grammar__________主要情態(tài)動詞Can,couldMay,mightMustOughttoNeedDare,daredcan表能力：Icanreadveryfast.表客觀可能性：Marycan’tbetheleader.表允許：Youcantakeitaway.表懷疑：Howcanyoufinishit?could表能力/可能性：Couldyoufinishitsoon?表懷疑：Hecouldnotbe50.委婉地提出問題：Couldyoushowmethepassport?用于虛擬：Ifyouhadcome,youcouldhavegotawonderfulgift.may詢問或說明可不可以做：MayIaskyouaquestion?表可能會發(fā)生：Hemaygetangry.表目的或讓步的從句：Comehereintimesothatyoumayseethesinger.might表可能的事：（同may）表目的從句：（同may）用于虛擬：Ifyouhadfinishedit,thebossmighthavegivenyousomepromotion.

must表必須做的事：YoumusthandinyourhomeworkthisFriday.表揣測：Itmusthaverainedlastnight.表“偏偏”的意思：Hemustgetafeverwhenwewerereadytogetoff.oughtto

表應(yīng)該做的事：Yououghttodoitcarefully.表非?？赡艿氖拢篐eoughttobeherebynow.need表需要；主要用于否定句或疑問句：Weneedn’thurry.可用于否定意思的句子：Idon’tthinkyouneeddoit.作及物動詞，和不定式連用：Hedidn’tneedtosaythattoher.dare表“敢于”，主要用于疑問句、否定句和條件從句：Hedarenottellhimthenews.作及物動詞，與不定式連用：Wedon’tdaretoenterthehouse.shall用于第一，三人稱疑問句，征求意見或請求

shall第二，三人稱陳述句,

命令,警告,允諾,威脅

should表勸告，建議，命令，順理成章

oughtto表應(yīng)該，語氣＞should美語中，oughtto用于否，疑句時to可省。多數(shù)情況下，oughtto可與should互換使用。疑問句中常用should代替oughtto。Oughtto的反意疑問句用shouldn’t替代。Oughtto表示“想必會”時語氣較must弱。shall,should&oughtto你最好不要抽煙了。

Youshould/oughttostopsmoking.YououghttohavehelpedhimwithhisEnglish,________?won’tyouB.oughtnotyouC.shouldn’tyouD.wouldn’tyou他們想必已到那兒了。Theyoughttobetherebynow.(語氣較must弱)比較hadbetter,should&oughtto

三者均表示建議，意為“應(yīng)該”，“應(yīng)當(dāng)”或“最好做…”.

三者的語氣程度為漸強。hadbetter指一般性的建議，最弱。should&oughtto含義相近，常可互換。區(qū)別在于，oughtto常指特殊情況下的“應(yīng)當(dāng)”。Should則指一般情況。見例句。Yououghttohelphimbecauseheisintroublenow.(語氣強，有命令意味。)Youshouldhavearestafterfinishingyoursports.（一般性建議）haveto

haveto表示客觀需要去做的事情，意為“必須，不得不?！?/p>

Ihavetogetthestationearlytocatchthefirsttrain.Wemissedthebussowehadtowalkhome.Wehavetoovercomeallkindsofdifficulties.Haveto有多種時態(tài)。常見的有：一般將來時Wewillhavetogatherattheschoolgateat7tomorrow.一般現(xiàn)在時Ihavetotakemoremoneywithmebecausemygirlfriendhassomuchtobuy.一般過去時Finally,wehadtogiveupourideatoholdapicnicoutsideasitrainedforawholeafternoon.haveto（考點）Musttheydo…?Yes,theymust.No,theyneedn’t/don’thaveto.

must&havetomusthaveto主觀／客觀主觀客觀時態(tài)

現(xiàn)在，將來多種表推測√

×詢問意愿√

×否定意禁止，不允許

不必

must表主觀意志，而haveto表由于客觀因素不得不做完成的事情。Must沒有過去式，除在間接引語中可表示過去的時間。在直接引語中表示過去的時間用hadto代替。Itoldherthatshe

must

giveupsmoking.Shesaid,“We

hadto

geteverythingreadythatnight.”比較must&havetoNeedIdo…?Yes,youmust.No,youneedn’t.dare&need情態(tài)動詞實義動詞dare否，疑，條

darenotdo否,疑don’tdaretodo

don’tdaredo不用于肯定句肯：daretodoneed否，疑

needn’tdo(don’t)needsth(don’t)needtodo肯：must,haveto,oughtto,should注意對need問句的回答:--NeedIfinishtheworktoday?--Yes,________________.No,________________.No,________________.youmustyouneedn’tyoudon’thavetoneedn’t對其它情態(tài)動詞的回答:--Shall

ItellJohnaboutit?--No,you__________.--No,you__________.--Must

wedoitnow?--No,you__________.--No,you__________.needn’tdon’thavetoneedn’tdon’thavetoExercises高考鏈接1.--IsJohncomingbytrain?--Heshould,buthe____not.Helikesdrivinghiscar.(高考真題）

A.mustB.canC.needD.may2.Ithasbeenannouncedthatcandidates(候選人)____remainintheirseatsuntilallthepapershavebeencollected.(高考真題）

A.canB.willC.mayD.shall3.--Iheardtheywentskiinginthemountainslastwinter.(高考真題）

--It____truebecausetherewaslittlesnowthere.A.maynotbeB.won’tbeC.couldn’tbeD.mustn’tbePractice1:高考考題專練1.Ithoughtyou_____likesomethingtoread,soIhavebroughtyousomebooks.A.mayB.mightC.wouldD.must2.Whereismypen?I____it.A.mightloseB.wouldhavelostC.shouldhavelostD.musthavelost3.Ididn’thearthephone.I___asleepA.mustbeB.musthavebeenC.shouldbeD.shouldhavebeenBD

B4.Therewerealreadyfivepeopleinthecar,buttheymanagedtotakemeaswell.It____acomfortablejourneyA.can’tbeB.shouldn’tbeC.mustn’thavebeenD.couldn’thavebeen5.It’snearlyseveno’clock.Jack___behereatanymoment.A.mustB.needC.shouldD.could

DC6.Didthetrainarriveintime?No.It_______twohoursago.A.musthavearrivedB.oughttohavearrivedC.mustarriveD.oughttoarrive7."MustIdrivetohishouseandpickupthechildren?"

"No,

."

A.youshouldn't

B.youmightnot

C.youneedn't

D.youmustn'tBC8.Wedidn'tseeTomatthemeetingyesterday.He

it.

A.mustn'thaveattended

B.cannothaveattended

C.needn'thaveattended

D.wouldhavenotattendedB9.Thereissomeoneknockingatthedoor.

itbeTom?

A.can

B.must

C.should

D.oughttoA10.Twoyearsago,myhusbandboughtmeabicycle.Ifyouliveintown,itisoftenfasterthanacarandyou

worryaboutparking.

A.mustnot

B.maynot

C.shouldnot

D.don'thavetoD

11.You_____suchalongcomposition.Theteacheronlyaskedfor300words.Youhavewritten600.A.mustn’thavewrittenB.couldn’thavewrittenC.needn’thavewrittenD.donothavetowriteCConclusion

WriteadifferentendingtothestoryComeAndEatHere(1)HealthyEatingPeriod3Comeandeathere(2)UsingLanguageWarmingUpI:Review:(Translatesomesentencesaccordingtothereading)1.我想沒有比這更好的了.2.好奇心驅(qū)使王鵬走了進去.3.王鵬對價格感到很驚訝.4.他不可能讓雍慧再騙人了.5.如果你每天來這吃飯，我會幫助你減肥.II:Prediction:CanyouguesswhatwillhappentoWangPengandYongHui?+=III:Reading–I:FastreadingWastheircooperationasuccess?Howabouttheendingofthestory?Reading–II:

Detailreading

Readthetextfast,thenanswerthefollowingquestions:1.WhydidYongHuicometoWang’srestaurantthenextday?BecauseshewasangrywithwhatWangdid,andwantedtoaskhimtomakeanapologytoher.2.HowdidYongHuifeelwhenshehadthemealinWang’srestaurant?3.Whatdidtheyfindaftertheirchat?Shefeltsickwithallthatfatandheavyfood,andshemissedhervegetablesandfruit.Theyfoundtheydidn’tofferbalanceddiets.BecauseWangdidn’tofferenoughfibreandYongHuididn’tofferenoughbody-buildingorenergy-givingfoods.4.Howdidtheycombinetheirmenusandprovideabalancedmenu?Theyservedrawvegetableswiththehamburgersandboiledthepotatoesratherthanfriedthem,andservedfreshfruitwithicecream.5.Whywastheircooperationasuccess?ATheycooperatedsuccessfullyinbusiness.BTheylikedeachother.PresentationIV:LanguagepointsforReadingII:1.earnone’sliving1)earnmeanstoget(money)byworking賺，掙（錢）；togetsth.becauseofone’squalitiesoractions博得，贏得eg:Iearn2000yuanamonthbysellingnewspapers.Sheearnedherplaceintheteambytraininghard.Heandhiswifeeach___10yuananhour.A.earnsB.earnC.spendsD.takesB2)earnone’sliving謀生

earnone’s/aliving=makeone’s/aliving謀生eg:Ateacherearnshislivingbyteaching.

老師靠教學(xué)為