Unit2HealthyLifestyleDiscoverUsefulStructures课件-高中英语人教版选择性

Unit2HealthyLifestyleDiscoverUsefulStructures

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

as

subjectandV-ingformasthesubject.LearningObjectivesPayattentiontothereditalicizedinfinitivesanddiscussthemeaningsandfunctionsoftheitalicisedinfinitives.1.Tochangebadhabitsisnevereasy.2.Ittookthesurgeonthreehourstofinishmymother’slungsurgery.3.TojointhePeople’sLiberationArmy,itisrequiredformentoshaveofftheirbeards.4.Itwasnotpolitetodisturbyourneighborswithloudmusiclastnight.主语主语主语主语Lead-inObserve

Tosee

istobelieve.Togetupearly

isnecessary.Tolearnaskillisveryimportantforeveryoneinsociety.

Discover11.不定式作主语通常位于______，表示具体的某次动作，谓语动词用______。句首单数Exploregrammar1.Tolookafterthesenaughtyboys_______(be)reallydifficult.2.Tosavemoneynow

_______(seem)impossible.

①

单一概念的动词不定式作主语时，谓语动词用单数形式。isseems3.TolearnEnglishwellandtomasteraskill

_______(be)veryimportantforyourfuture.4.Tojogeverymorningandtodosomestretchingexercisesintheevening

_______(be)goodwaystokeepfit.②

两个及以上动词不定式作主语，谓语动词用复数形式。5.Toloveandtobeloved

______(be)thegreatesthappinessonecanget.areareis③

两个并列的不定式语义基本一致，谓语动词用单数形式。动词不定式直接做主语ExploregrammarObserve

________(怎样)tohandletherubbishisthequestion.________(去哪)togofordinner

hasnotbeendecided.

Discover1.________和动词不定式构成不定式短语作主语2.可用于该结构的疑问词疑问代词:疑问副词:疑问词who,whom,what,whichHowWherewhen,where,how1.Whenandwhere________

(vote)hasn’tbeendecided.2.____________（何时装修）thehousehasn’tbeendecidedWhentodecoratetovoteExploregrammarToworkouttheproblemisnoteasy.=It’snoteasytoworkouttheproblem.Practice:冬天玩雪很有意思。Itisinterestingtoplaywithsnowinwinter.Practice:看到船沉入海中是很可怕的Itisterribletoseetheshipsinkingintothesea.当主语较长，谓语较短时，常用_____________放在句首,而将真正的主语—________放到谓语的后面。it作形式主语不定式ExploregrammarItisnecessary

foryoutochangeyourjob.It’sdifficult

forustolearnEnglishwell.Itwassilly

ofyoutogiveupsuchagoodchance!It’sverykind

ofyoutosayso.若adj.“描述人的品格、特点”,用of,如kind, nice, wise, silly, polite, impolite, friendly, foolish, clever;若adj.“描述事或行为的特征”,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

ExploregrammarItisnecessary______youngstudentstolearna foreignlanguage.Itwassilly______youtogiveupsuchagoodchance!

Itisimportant_______ustoexpressouropinions.Itwasnotpolite______youtodisturb

yourneighbourswithloudmusiclastnight.forofofShowtimefor常见的名词有：pity, shame, pleasure, one’sduty, one’sjob, fun, joy, goodmanners, badmanners等Summary

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

Itisourdutytodothat.ExploregrammarIttookmemorethananhourtodomyhomeworkyesterdayevening.Itwilltakeusalotofmoneytobuythathouse.Summary

常用句型3：Ittakes/took/willtakesb.sometime/moneytodosth.做某事花费某人多长时间(钱)Exploregrammar

Tolookafterchildrenisherjobtoday.她今天的工作是看孩子。Lookingafterchildrenisherwork.她的工作是照顾孩子。Comparethetwosentencesbelowandtellthedifferenceinmeaning.Summary不定式作主语和动词-ing形式作主语的区别：

动名词作主语表示_______________的行为;不定式作主语表示_________________________

动作。经常性/习惯性/抽象性具体的、一次性的或将来的1.______(do)morningexercisesregularlyisgoodforyourhealth.

2.Itfeelsreallygood______(do)morningexercisestoday.DoingtodoNotice不定式短语作独立成分

tobegin/startwith首先

tosumup总而言之

toconclude总而言之

totellthetruth说实话

tobefrank坦白地说

tobehonest说老实话tobebrief简言之

一些不定式短语可用作独立成分，通常位于句首，有时位于句中或句末，要用逗号同其他句子成分隔开。Totellthetruth，Idon’tlikethegiftedactressinthemovie.说实话，我不喜欢这部影片中的那个有天赋的女演员。Notice（1）

（总而言之），mostofthecommitteememberssupportedtheideabutafewwereagainstit.（2）

（简言之），hewashappywiththeresult.（3）Shewrote，

（确切地说），tennovelsinherlifetime. （4）

（首先），he’stooyoungforthatkindofjob.（5）

（说老实话），Idon’treallywanttogotothepartytonight.Tosumup/ToconcludeTobebrieftobeexactTobegin/startwithTobehonestShowTimetodotodo作主语位于句首，在谓语之前todo作主语位于谓语之后，It作形式主语疑问词+todo构成不定式短语，作主语和-ing作主语的区别Toreadwithoutreflectingislikeeatingwithoutdigesting.

Ittakessb.time/moneytodosth.Itis+adj.+（for/ofsb.）todosth.Itis+n.+(forsb.)todosth.todo表示具体的，将来的，一次性的动作-ing表示经常性、习惯性、抽象的动作与疑问词who,whom,whose,what,which,when,where,how等连用Summary1.Ittookusabouttwohours

(get)therethatday.2.Whether

(hold)apartythisweekendhasn’tbeenknownyet.3.Itisfoolish

youtotakeataxitothetowninthatsituation.4.Itisimportantforher

(prepare)fortheexamination.5.It’sourduty

(keep)ourenvironmentcleanandtidy.6.Itisnogoodforyou

(wait)hereforalongtime.7.

(get)therebybikewilltakeushalfanhour.togettoholdoftopreparetokeeptowaitTogetPractice

1．

(lean)outofthewindowisdangerous.2．

(save)moneynowseemsimpossible.3．Itisanoffence

(drop)litterinthestreet.4．Itisstupidofyou

(write)downeverything(that)theteachersays.5．__________(say)isonethingandtodoisanother.6．Itseemedapity__________________(waste)somuchtime.7.Idon’tthink__________________________（你问……是不礼貌的）howlongtheinterviewwilllast.8.

（保卫……是我们的职责）thecountryagainstitsenemies.9.

（……花了我半个小时）towashtheclothes.Tolean

Tosave

todropActivity7

Completethesentencesusingthecorrectformsofthewords.

towrite

Tosay

tohavewasted

itisimpoliteofyoutoask

It’sourdutytodefend

IttookmehalfanhourPractice

10.Ilikeeatingfriedtomatoeswitheggs,andIthoughtitmustbeeasy________(cook).11.Itiseasyforthem__________(care)

for.

12.Itwassogood_______(feel)acceptedforwhatI’mgoodat.13.It’smyfirsttime_______(hear)ChinesestoriestoldbyanEnglishspeaker.14.Thenwewillknowhowimportant______istohavemeaninginourlife.15.Itisnotasimplematter____________(determine)thenatureoftalent.16.___________(learn)tothinkcriticallyisanimportantskilltoday’schildrenwillneedforthefuture.17.Onourwaytothehouse,itwasrainingsohardthatwecouldn’thelpwonderinghowlongitwouldtake_______(get)there.tocooktobecaredtofeel

tohearittodetermineLearningtogetPractice1.important/avoid/passivecigarettesmoking.Itisimportanttoavoidpassivecigarettesmoking.2.willtake/nutritionspecialist/abalanceddietmenu/make/anhour/foryou.Itwilltakeanutritionspecialistanhourtomakeabalanceddietmenuforyou.3.useful/turnto/fitnessconsultant/foradviceItisusefultoturntofitnessconsultantforadvice.4.illegal/dangerous/take/drugsItisillegalanddangeroustotakedrugs.5.harmful/skipbreakfast/oftenItisharmfultooftenskipbreakfast.ExerciseontheBookcompletetheconversationswiththecorrectformsofthephrasesinthebox.1.A:Hello,doctor.Iwanttoloseweight,butIjustcan'tseemtodoit.Whatcanyoudotohelpme?B:Well,first,it'snecessaryto______________whatyoueat.Cutoutallfattyfoodandsugarydrinks,andeatmorefruitandvegetables.2.A:Ireallyneedto_____________awaytoexercisemore.Icoulduseafitnessapp,butmyphone'sfull.B:Sodeleteafewfiles.I'msuretheappdoesn'ttakeupmuchspace.3A:Beforeexercising,alwaysdoafewwarm-upsto___________________.B:Iknow.ButthenIalwaysfeeltootiredtocontinue!4.A:ShouldIgoforthepizzaorthefriedchicken?Ihate_________________likethese.Youknowwhat—I'mgoingtoeatboth!B:Wow！lDon'teattoomuchjunkfood-you'llgetfat.I'veactually________________togoonadiet,soI'lljuststicktothefruitsalad.beincontrolofbeginwithbeincontrolofmakeachoicedecideonmakeupone’sminddecideonbeginwithtomakechoicesmadeupmymindExerciseontheBook

Mikedrovetoaremotebordertownalone.Hedidn’tstopthecar1.________(take)abreakalthoughhewasfeelingtired.Asaresult,atrafficaccidentoccurred,whichcausedhim2.______

__(trap)insidethecar.Fortunatelyagirlwhohappenedtopassbyvolunteered3.________(save)him,o