語法精講Unit2Teachingobjectives:

Bytheendofthisperiod,youwillbeableto…1.mastertheusageoftheinfinitiveassubject.2.usetherelevantgrammarflexiblyandauthenticallyinrealsituation.3.understandthedifferencebetweentheinfinitive

as

subjectandV-ingformasthesubject.PayattentiontothesentencesLead-inIt

isdifficultformetogetupearly.Itiskindofyoutohelpme!Togetupearly

isdifficultforme.Tohelpmeiskindofyou!Lead-in?Theinfinitiveineachsentencefunctionsasthesubjectofthesentence.Observe

Tosee

istobelieve.Togetupearly

isnecessary.Tolearnaskillisveryimportantforeveryoneinsociety

Discover1.不定式作主語通常位于______，表示具體的某次動作，謂語動詞用______。句首單數(shù)LearningObserve

________tohandletherubbishisthequestion.________togofordinner

hasnotbeendecided.

Discover1.________和動詞不定式構(gòu)成不定式短語作主語2.可用于該結(jié)構(gòu)的疑問詞疑問代詞:疑問副詞:疑問詞who,whom,what,whichLearningHowWherewhen,where,how1.Whenandwhere________

(vote)hasn’tbeendecided.2.____________（何時裝修）thehousehasn’tbeendecidedWhentodecoratetovoteToworkouttheproblemisnoteasy.=It’snoteasytoworkouttheproblem.Itisinterestingtoplaywithsnowinwinter.Itisterribletoseetheshipsinkingintothesea.Learning當主語較長，謂語較短時，常用_____________放在句首,而將真正的主語—________________________。it作形式主語不定式放到謂語的后面Observe

Itisinterestingtoplaywithsnowinwinter.It’simportantforustokeepthewaterclean.It’sverykindofyoutohelpme.Discover以上句子的表語都是______。形容詞Learningit+be+adj+(邏輯主語)+todosthItisnecessaryforyoutochangeyourjob.It’sdifficultforustolearnEnglishwell.Itwassillyofyoutogiveupsuchagoodchance!It’sverykindofyoutosayso.Learning若adj.“描述人的品格、特點”,用of,如kind,?nice,?wise,?silly,?polite,?impolite,?friendly,?foolish,?clever;若adj.“描述事或行為的特征”,用for,如easy,?hard,?difficult,?possible,?important,?impossible,?necessary,good,?bad,?exciting,?interesting,?surprising常用句型1：Itis+adj.+for/ofsb+todosthSummary

Itisnecessary______youngstudentstolearna?foreignlanguage.Itwassilly______youtogiveupsuchagoodchance!

Itisimportant_______ustoexpressouropinions.Itwasnotpolite______youtodisturb

yourneighbourswithloudmusiclastnight.forofofShowtimefor常見的名詞有：pity,?shame,?pleasure,?one’sduty,?one’sjob,?fun,?joy,?goodmanners,?badmanners等LearningSummary

常用句型2：Itis+n.+(forsb.)todosth.Itisanhonourtogiveaspeechinbehalfofmyschool.Itisapitytomissthechancetoseeyourshow.

Itisourdutytodothat.Ittookmemorethananhourtodomyhomeworkyesterdayevening.Itwilltakeusalotofmoneytobuythathouse.LearningSummary

常用句型3：Ittakes/took/willtakesb.sometime/moneytodosth.做某事花費某人多長時間(錢)

Tolookafterchildrenisherjobtoday.她今天的工作是看孩子。Lookingafterchildrenisherwork.她的工作是照顧孩子。Comparethetwosentencesbelowandtellthedifferenceinmeaning.FurtherthinkingSummary不定式作主語和動詞-ing形式作主語的區(qū)別：

動名詞作主語表示_______________的行為;不定式作主語表示_________________________

動作。經(jīng)常性或習(xí)慣性具體的、一次性的或?qū)淼?.______(do)morningexercisesregularlyisgoodforyourhealth.

2.Itfeelsreallygood______(do)morningexercisestoday.Doingtodo1.______tookusalongtimetorepairthehouse.2.Itisfoolish_____youtoturndowntheproposal(提議).3.Itisimportant______hertopreparefortheexamination.4.Whenyouareintrouble,itis_______(help)toturntoyourteacher.5.Toformagoodhabit_______(be)difficultwhiletofallintoabadhabitiseasy.6.Whether_________(hold)apartythisweekendhasn’tbeenknownyet.ShowtimeJointhewordstomakefullsentencesusingtheinfinitive.1.important/avoid/passivecigarettesmoking.____________________________________________________________2.willtake/nutritionspecialist/abalanceddietmenu/make/anhour/foryou._____________________________________________________________3.useful/turnto/fitnessconsultant/foradvice_____________________________________________________________4.illegal/dangerous/take/drugs_____________________________________________________________5.harmful/skipbreakfast/often__________________________________________________________________Itisimportanttoavoidpassivecigarettesmoking.

Itwilltakeanutritionspecialistanhourforyoutomakeabalanceddietmenu.Itisusefultoturntofitnessconsultantforadvice.Itisillegalanddangeroustotakedrugs.

Itisharmfultooftenskipbreakfast.Showtime假如你是李華，學(xué)英語雜志社的編輯，你收到位高一同學(xué)David的求助信。信中提到他剛上高一，學(xué)習(xí)和心理壓力日益加大，他的正常生活受到影響，身體也開始亮起了紅燈。請你根據(jù)以下要點，給這位同學(xué)寫一封回信，給他提出建議。內(nèi)容包括:1.安慰2.具體建議注意:1.詞數(shù)100左右;2.可以適當增加細節(jié)，以使行文連貫ShowtimeDearDavidKnowingthatyouaresufferingfromgreatpressureandphysicalproblemsafterenteringseniorhighschool,Ifeeldeeplysorryaboutit.Butdon’tworry,_____________________________________________________（我們需要一些時間來適應(yīng)高中的要求）________________________________________________________（很榮幸能和你分享一些實用的建議）。Aslearningisbecomingincreasinglychallenging,_________________________________

（學(xué)生感到壓力大是很常見的）Onlyifyoubalancestudyandpressurewell,canyouenjoyyourschoollifebetter.Firstandforemost,itishighlyrecommendedthatyoushouldgooutdoorsandtakeregularexercise.Additionally,________________________________________（保持均衡健康的飲食是非常重要的）

Stayingawayfromjunkfoodandeatinghealthyfoodwillbeofgreatbenefittoyou.Lastbutnotleast,goodhealthmeansbeingbothphysicallyandmentallyhealthy.Itiskeepinganoptimisticstateofmindthatwillcontributetoagoodphysicalstate.Ihopetheadvicementionedaboveisusefultohelpyousettleproblems.I’mlookingforwardtoyourgoodnews.Bestwish