Unit2HealthyLifestyleLearningaboutLanguageDiscoverUsefulStructures课件高中英语人教版选择性

DiscoverUsefulStructuresUnit02HealthyLifestyle新人教选择性必修三LearningAims

Afterthisperiod,studentswillbeableto:1.Tomasterthedifferentformsanduseoftheinfinitive;2.TounderstandthedifferencesoftheInfinitiveandthegerundassubject;3.TousetheInfinitiveassubjecttodiscusshealthylifestyles.TeachingEmphases&difficulty1.Helpstudentstoexploretheuseoftheinfinitivesassubject;2.Makesurestudentsusetheinfinitivecorrectlyinspecificcontext.Lead-in1.

Tochangebadhabits

isnevereasy.2.It

tookthesurgeonthreehourstofinishmymother’slungsurgery.3.TojointhePeople’sLiberationArmy,itisrequiredformen

toshaveofftheirbeards.4.Itwasnotpolite

todisturbyourneighborswithloudmusiclastnight.TheInfinitiveactsasthesubjectofthesentence!FormalSubjectJointhewordstomakefullsentencesusingtheinfinitiveandthenJointhesentencestomakeaparagraph.Youcanaddyourownsentencesifnecessarytomakeyourparagraphmoremeaningful.

important/avoid/passivecigarettesmokingItisimportanttoavoidpassivecigarettesmoking.willtake/nutritionspecialist/abalanceddietmenu/make/anhour/foryou.Itwilltakeanutritionspecialistanhourtomakeabalanceddietmenuforyou.Lead-inuseful/turnto/fitnessconsultant/foradviceItisusefultoturntoafitnessconsultantforadvice.illegal/dangerous/take/drugsItisillegalanddangeroustotakedrugs.harmful/often/skip/breakfastItisharmfultooftenskipbreakfast.Lead-inJointhesentencestomakeaparagraph.Youcanaddyourownsentencesifnecessarytomakeyourparagraphmoremeaningful.

Togethealthyandgetridofbadhabits，sometimesitisalsoagoodideatogetprofessionalhelp.Itwilltakeanhourforanutritionspecialisttomakeabalanceddietmenuforyou.Itisalsousefultoturntoafitnessconsultantforadvice.Lead-inLead-inIt作为形式主语当作主语的不定式结构比较复杂时,常常用it作形式主语,而把真正的主语置于句子的后面。练一练1.Sometimesit’sbetter

（stay)calmwhenintrouble.2.Itwasfoolish

hertomakesuchamistake.3.

Itisrude

himtosaythattoalady.4.Itisdifficult

teenagerstolivealoneinaforeigncountry.tostayofoffor5.你真是粗心，把钥匙忘在家里。________________________yourkeysathome..6.他冒那样的危险真是太愚蠢了。_______________________suchrisks.7.妈妈担心自己孩子的健康是很自然的。________________________________________herownchildren’shealth.

It’scarelessofyoutoleaveIt’sfoolishofhimtotakeIt’snaturalforamothertobeconcernabout练一练Thedifferencebetweentheinfinitiveandthegerund

不定式与V-ing作主语的区别不定式作主语表示一次性的、具体的、将来的或未做的动作；动名词作主语表示一般的、抽象的、泛指的或者已经完成的动作。__________(finish)thetaskintimeisagreatchallenge.___________(walk)afterdinnerisgoodtohealth.--WhathasmadeJannysoupset?--_______(lose)twoticketstothecinema._________(get)totheparkbybikewilltakeabout20minutes.TofinishWalkingLosingToget疑问词+不定式可用于该结构的疑问词疑问代词：who，whom，what，which疑问副词：when，where，how常接该结构的动词：know，see，decide，tell，ask，consider，explain，learn，wonder特殊疑问词+不定式在句中可以作：主语、宾语和表语1._______________theriverisstillaproblem.怎样过桥仍然是个问题。（作主语）2.______________________hasnotbeendecided还没有决定去哪儿露营。（作主语）3.Wehavenowidea__________________________________.我们不知道如何控制水污染。（作宾语）4.Thequestionis________________________.问题是在那里举行这个晚会。（作表语）

HowtocrossWheretogocampinghowtocontrolthewaterpollutionwheretoholdtheparty练一练补全下面句子不定式短语作独立成分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。tobegin/startwith首先tosumup总而言之

toconclude总而言之，最后totellthetruth说实话

tobefrank坦白地说tobehonest说老实话tobebrief简言之

Pleasefillintheblankswiththerightformofthewordsgiveninthebrackets.1.Itisreallyhardforaforeigner__________(pick)upChineseinsuchashorttime.2.It’sreallykindofyou________(help)mewithmymath.3.________(travel)totheMeiliSnow-cappedMountainMr.Jones’sdreamofthisyear.topicktohelpTotravel练一练4.Ithinkitnecessary_____________(practice)listeningandspeakingEnglisheveryday.5.Itcantakesometime___________(recover)fromtheCovid-19infection.6.InKunming,_________(miss)abusmeanswaitingfor15minutes.topracticetorecovermissing练一练Youdon’tneedtobetoldthatitisdifficult1._________(lose)weight.Or,2.________(keep)theweightoffonceyouhavedroppedthosepounds.Now,itistimeforyou3.___________(identify)thefactorsthatcauseyouroverweight.Forinstance,youmaydiscoverthatyouspendtoomuchtime4._________(be)inactive.Or,thatyoutendtoskipmealsandsnackinstead.Onceyou5._____________(figure)outtheproblem,youwillfindyourselfonestepclosertocorrectingyourissues.tolosetokeeptoidentifybeinghavefigured练一练6.________(Eat)healthyfoods,gettingenoughsleep,andexercisingregularlycanalsotheanswer.So,itisimportant7._________(make)anefforttoleadahealthylifestylewhenyouaregoingthroughatoughperiod.Theseareallthewaysyoucanchangeyourlifestylesothatyouwillfinditeasier8._________(slim)down.What’smore,byadoptingthesehealthytips,youwillnoticethatyouhaveaneasiertime9._______(keep)theweightoffaswell.So,makeitapoint10.___________(follow)theguidelinesmentionedabove.Eatingtomaketoslimtokeeptofollow练一练Completetheconversationswiththecorrectformsofthephrasesinthebox.(textbookPage17Ex.3)1.A:Hello,doctor.Iwanttoloseweight,butIjustcan’tseemtodoit.Whatcanyoudotohelpme?B:Well,first,it’snecessaryto_________________whatyoueat.Cutoutallfattyfoodandsugarydrinks,andeatmorefruitandvegetables.beincontrolofbeginwith,beincontrolof,makeachoice,decideon,makeupone’smind2.A:Ireallyneedto__________awaytoexercisemore.Icoulduseafitnessapp,butmyphone’sfull.B:Sodeleteafewfiles.I’msuretheappdoesn’ttakeupmuchspace.3.A:Beforeexercising,alwaysdoafewwarm-upsto___________.B:Iknow.ButthenIalwaysfeeltootiredtocontinue!decideonbeginwithCompletetheconversationswiththecorrectformsofthephrasesinthebox.(textbookPage17Ex.3)4.A:ShouldIgoforthepizzaorthefriedchicken?Ihate________________likethese.Youknowwhat—I’mgoingtoeatboth!B:Wow!Don’teattoomuchjunkfood-you’llgetfat,I’veactually___________________togoonadiet,soI’lljuststicktothefruitsalad.makingchoicesmadeupmymindCompletetheconversationswiththecorrectformsofthephrasesinthebox.(textbookPage17Ex.3)1A:I'mthinkingaboutridingamotorbiketoschool.Whatdoyouthink?B:Oh?Well,Ithinkit'snecessary____________________________first.Agroupofstudentsarechattingafterclass.Completetheconversationswiththecorrectformsofthephrasesinthebox.eatagoodbreakfastgetyourparents’permissionhangoutwithfriendsbalanceworkandpersonallifetogetyourparents’permission(WORKBOOKP69EX.1)toeatagoodbreakfast(WORKBOOKP69EX.1)3.A:IoftenseeyouaroundCentralPark.B:Yes,Ilike_______________________thereeveryweekend.Weusuallyplayballgames.4.A:Ihearthatthenewheadmasterhastoomanythingstodo.B:Yes.Itwillbeabigchallengeforhim____________________________________.hangingoutwithfriendstobalance(his)

workandpersonallife(WORKBOOKP69EX