Unit+6+Nurturing+Nature+Using+language+课件【知识精讲精研】高二英语外研版（2019）选择性必修第一册

SB1U6GrammarPresentperfectcontinuousLookatthesentencesfromthereadingpassageandanswerthequestions.(P53)Q1.Whichofthesestatementsistrueaboutsentence(a)?(1)Wildanimalsstartedusingthesepassagesinthepast.(2)Wildanimalsusedthesepassagesonlyonce.(3)Wildanimalsstillusethesepassagesnow.a.WildanimalssuchastheseTibetanantelopeshavenow

beenusingthesepassagesforyears.b....beforeIknowit,wehavereachedTanggulaStation.Q2.Whatisthedifferencebetweentheexpressionsinboldinsentences(a)and(b)?Theyaredifferentinformandmeaning.Forsentence(a)theformis“havebeendoing”,whileforsentence(b)theformis“havedone”.Inmeaning,theboldpartinsentence(a)meanstheactioniscontinuousfromthepast;whiletheboldpartinsentence(b)meanstheactionhappenedonceinthepast.a.WildanimalssuchastheseTibetanantelopeshavenow

beenusingthesepassagesforyears.b....beforeIknowit,wehavereachedTanggulaStation.Learningobjectives一、构成Ihavebeenreadingthebook.Ihavebeenlivingheresince1988.Ihavebeenwaitingfortwohours.Sheisverytired.Shehasbeenworkingallmorning.Wehaveallalongbeenmakingmistakeslikethis.have/has＋been＋v­ing现在完成进行时常与表示一段时间的状语连用，例如：allthetime,thisweek,allnight,thesefewdays,for…,since…等。二、用法表示动作从过去开始，一直延续到现在，将来还可能延续下去，强调动作的延续性。Ihavebeenwaitingforanhour,butshehasn'tcomeyet.

我都等了一个小时了，但是她还没来。Tomhasbeenworkinghardsincethenewtermbegan.

自从新学期开始，汤姆一直在努力学习。2.表示动作刚刚结束，该动作一般不再继续，有时会指出结果。Ihavebeenplayingping­pongallmorning,soI'msweating.

整个上午我一直在打乒乓球，所以我浑身是汗。I'vebeenpaintingthedoor,somyhandsareverydirty.

我一直在给门刷油漆，所以我的手很脏。3.表示从过去某时开始到现在这一段时间内动作一再重复发生。ShehasbeenphoningJimeverynightforthepasttwoweeks.

两星期以来，她每天晚上都给吉姆打电话。Youhavebeentellingmenottobelatealltheway.一路上你一直在告诉我不要迟到。表示某种感情色彩。Youhavebeendaydreamingbutnevermakeaneffort.

你一直在做白日梦，但从不努力。(指责)Youhavebeenlyingtome.

你一直在对我说谎。(气愤)三、不能用现在完成进行时的情况有些动词不能用于现在完成进行时，但可用于现在完成时，这些动词为：感官：see,hear,feel,sound,seem情感：like,love,hate,want,wish存在：exist,stay,remain拥有或从属：have,possess,own,consist,belong思维：think,believe,understand,knowIhaveknownhimforyears.我认识他已经好几年了。Theyhavefinishedthework.他们已经完成了这份工作。四、现在完成进行时与现在完成时的区别现在完成时强调的是某个刚刚完成的动作或某个过去的动作对现在的影响或产生的结果；现在完成进行时则强调动作的延续性。试比较：Ihavethoughtitover.

我已经考虑过这件事了。Ihavebeenthinkingaboutit.

我一直在考虑这件事。现在完成进行时可以表示动作的反复性；现在完成时一般不表示反复性。试比较：Haveyoubeenmeetinghimrecently?

你最近经常见他吗？Haveyoumethimrecently?

你最近见过他吗？现在完成进行时有时含有感情色彩；现在完成时一般表示平铺直叙。试比较：亨利工作有条不紊。Henryhasbeendoinghisworkorderly.

(含表扬的意味)Henryhasdonehisworkorderly.

(描述事实)Completethe

passagewiththecorrectformoftheverbsinbrackets.I1________________(hear)astrangesoundforawhile.It’sadeep,loudroar,likealion’s.Buttherearen’tanylionshere...Orarethere?SoonIseewhat2_______________(make)thenoise:ahowlermonkey.NowIfeellessworried.Realisingthatsomething3_________(move)onmyshoulder,Iturnmyheadtolookatit.Ohno!It’sagiantspider!Ibrushitoffanditrunsundersomeleaves.Itrytobatawaythehugeinsects,which4______________(fly)aroundmyheadinablackcloudforquiteawhile.

IpullofftheheadsetandI’mbackinmylivingroom.Thankgoodness!I5______________(give)thelatestvirtualrealityheadsetand,forthelasttwentyminutes,I6______________(use)ittoexploretheAmazon.Thisisanamazingexperienceandareminderofhowmanyspeciesthereareintherainforest.Wemustdoallwecantoprotectit.havebeenhearinghavebeengivenismovinghasbeenmakinghavebeenusinghavebeenflyingLookatthechartsand

makesentencesusingthepresentperfectcontinuoustense.(P65)1.Thenumberoftreeshasbeenincreasinginthelast20years.2.Desertareashavebeenreducinginthelast20years.3.Butterflypopulationhasbeenincreasing/becominglargerandlargerinthelast20years.ThefirsttimeI_________(observe)aliensin1963wasfrightening!observedThey________________tomesince1964.TheyspeakEnglishwell!havebeentalkingIalsoknowsomeYetis,snowmenontheHimalayamountains.I_____already_______(take)alotofphotosofthem.takenhaveI_________(watch)theNessieMonsterin1992and_____________(know)theyareformedbecauseofnaturalfactorsthroughalotofresearch.watchedhaveknownRecentlyI____________(see)anunusualnumberofUFOs!Theyarereallyamazing!haveseenI________________(write)abookonUFOssincelastFriday.I________(be)abletofinishitearlynextyear.havebeenwritingwillbePracticeForthepasttwoyears,Gordon'sstudents____________________(study)waystokillbacteriainzerogravity,andtheythinkthey'reclosetoasolution(解决方案)．Inthelastfewyears,China______________(make)greatachievementsinenvironmentalprotection.Despitethepreviousroundsoftalks,noagreement_____________________(reach)sofarbythetwosides.havebeenstudyinghasmadehasbeenreachedMarty___________________(work)reallyhardonhisbookandthinkshe'llhavefinisheditbyFriday.Tom________________________(work)inthelibraryeverynightoverthelastthreemonths.Excuseme,madam.Ellen,ajournalistfromtheDailyMail_____________________(phone)allday.Couldyouspeaktohernow?hasbeenworkinghasbeenworkinghavebeenphoningListening&speakingDidyouknow?Readtheparagraphandanswerthequestions.1Whatisecotourism?

Ecotourismisatypeoftourismthatconservestheenvironment,encouragespeopletoberesponsibletravellersandinvolveseducatingthemaboutthenaturalworld.2Whichcountriesvalueecotourism?

CostaRica,Kenya,andNepal.3Whataretypicalvoluntaryworkforecotourismholidays?

Plantingtreesandcountingendangeredanimals.TourismandtheenvironmentListentotheconversationandchoosetheplacesmentioned.Activity5TourismandtheenvironmentListenagainandcompletethenotes.Nowworkinpairs.Discusswhattypeoftravelyouprefer.Activity6hardworkelephantshikeinthemountainscountlieonthebeachanicehotelaone-daybiketourPairworkWhattypeoftraveldoyouprefer?Completetheboxeswiththeexpressionsfromtheconversation.P66PersuadingothersCompromisingThefactisthat...Wouldn’tyouagreethat...?

Iagree,but…Let’sfindacompromise.Let’smeetinthemiddle.Asacompromise,…VocabularybuildingWhiteBeachisabeachontheislandofBoracayinthePhilippines.Itswhitesand,whichbendstowardstheturquoisewater,isdottedwithpalmtrees.WhiteBeachisofcourseabeautifulplacetorelaxinasunloungerandwatchthespectacularsunset.BackgroundinformationTourismandtheenvironmentCompletethepassagewiththeexpressionsinthebox.Nowlistentothepassageandcheckyouranswers.Activity8createopportunitiesfornewbusinesseshelpthelocaleconomynoteco-friendlydisturbthewildlifeprovidemorejobsuseupnaturalresourceshighercarbonemissionsAdvantages1.noteco-friendly2.disturbingthewildlife3.usingupnaturalresources4.highercarbonemissions5.pollutinginshoreseawater6.destroyinglocalecologicalenvironment...…DisadvantagesThinkaboutmoreadvantagesanddisadvantages1.attractingmoretourists2.creatingopportunitiesfornewbusinesses3.helpingthelocaleconomy4.providingmorejobsforpeoplelivinginthearea5.raisingawarenessofprotecting

localwildlife6.providinglocalswithachanceto

experiencecultures...Role-playadiscussiontoreachanagreementthatissatisfactoryforeveryone.

Usetheexpre