八年英語下冊(cè)UNIT8AGREENWORLDWELETOTHEUNIT課件

WarmingupDidyouknowthatallaroundtheworld,3to6billiontreesarecutdowneachyear?Haveyoueverplantedatree?

toprotectnature[pr?’tekt]

保護(hù)Newwords&phrasesdigvt.&vi.挖(洞，溝等)seriousadj.認(rèn)真的，嚴(yán)肅的breadfruitn.面包果turnoff關(guān)上（開關(guān)）e.g.Wecansaveenergybyturningoff

thelightswhenweleave.recyclevt.回收利用，循環(huán)利用e.g.Wecanprotecttheenvironmentbyrecyclingthings.wiseadj.明智的，充滿智慧的e.g.Theprofessorisverywise.

這名教授充滿智慧。causevt.導(dǎo)致；造成e.g.Humanpollutioncausesglobalwarming.

人為污染導(dǎo)致全球變暖。takeashowere.g.Wecansavewaterbytakingshortershower.Role-playWhatareyougoingtodo,Hobo?Planttrees.Willmoretreesbeplantedthisyear?Yes.Treesaregoodforus.OK.I’llgowithyou.Ilikedigginginthegarden.Areyouserious?Sure.I’llplantbreadfruittrees.Breadfruit…Yummy!

1.WhatisHobogoingtodo?2.Willmoretreesbeplantedthisyear?3.WhatdoesEddielikedoing?4.WhatwillEddieplant?Heisgoingtoplanttrees.Yes.Treesaregoodforus.Helikesdigginginthegarden.Hewillplantbreadfruittrees.Theclass1,Grade8studentsaretalkingaboutwaystoliveagreenlife.Lookatthepicturesbelowandmatchthemwiththecorrectsentences.AgreenlifeHowtoliveagreenlife?bybyWecan

saveenergyreduceairpollutionbybyWecan

thewatertoflushthetoilet.Wecanturnoffthetap

.Don’tleavethetaponwhen

.reuseWecan

whenwashinghandswithsoap.turnoffthetapbrushingteethtightlyUnplug(拔掉)

thecharger(充電器)for

whenitisnotinuse.TVmobilephoneTurnoffthe.lightsTurnoffthepowerof,

andsoonwhentheyarenotinuse.publictransportItiswiseforpeopletotakepublictransport.

buscoach

trainundergroundb.Wecansavewaterbytakingshortershowers.c.Wecansaveenergybyturningoffthelightswhenweleavearoom.d.Wecanprotecttheenvironmentbyrecyclingwaste.Listenandanswer1.HowdidKittygotoschoolinthepast?2.Whataboutnow?3.WhatdoesMilliethinksheshoulddotoliveagreenlife?Herfatherusedtodrivehertoschool.Theytaketheundergroundnow.Shethinksit’swiseforpeopletochoosepublictransportandridebicycles.

4.WhataboutDaniel?5.WhataboutSandy?Hethinkswecantakeshortershowerstosavewater.Shethinksweshouldremembertoturnoffthelightswhenweleavearoom.Readtheconversationaftertherecorder.PairworkA:Whatshouldwedotoliveagreenlife?B:…usedto…,butnow…A:Iagree.It’swisefor…B:Ithink…A:Yes…Languagepoints1.Whatareyougoingtodo?你打算做什么？句中begoingtodosth.意思是“打算、計(jì)劃做某事”。

e.g.IamgoingtoplanttreesthisSunday.

我打算這個(gè)星期天去植樹。

Heisgoingtoseeafilmnextweekend.

他打算下個(gè)周末去看電影。2.Willmoretreesbeplantedthisyear?

今年更多的樹將會(huì)被種植嗎？

句中willbeplanted意思是“將會(huì)被種植”，“willbe+動(dòng)詞的過去分詞”是一般將來時(shí)的被動(dòng)語態(tài)。

e.g.Thepandawillbesenttothezootomorrow.

這只大熊貓明天將被送到動(dòng)物園。將下列句子改為被動(dòng)語態(tài)。1)Hisfatherwillmendhisbike.__________________________________2)Johndidn’tfinishthehomework.__________________________________3)DidMikewatchthenewmovieyesterday?____________________________________________________________________Hisbikewillbemendedbyhisfather.ThehomeworkwasnotfinishedbyJohn.WasthenewmoviewatchedbyMikeyesterday?e.g.Wecanprotecttheenvironmentby recyclingthings.

我們可以通過回收利用東西來保護(hù)環(huán)境。

Wecansaveenergybyturningoffthe lights.

我們可以通過關(guān)燈來節(jié)約能源。“drivesb.+地點(diǎn)副詞/to+地點(diǎn)名詞”意為“駕車送某人去某地”。drivetosp.=gotosp.bycar意思是“開車去某地”。

e.g.Canyoudrivemetothetrainstation?

你可以開車把我送到火車站嗎？

Myfriendsoftendrivetowork.=Myfriendsoftengotoworkbycar.

我的朋友們經(jīng)常開車去上班。5.It’swiseforpeopletochoosepublictransportorridebicycles.對(duì)人們來說選擇公共交通或騎自行車是明智的。

Itis+adj.+forsb.+todosth.意思是“對(duì)某人來說做什么事情怎么樣”。常用于此句型的形容詞有important,difficult,dangerous,necessary,useful,possible等，用來對(duì)todosth.進(jìn)行說明，此句型可以轉(zhuǎn)換成Todosth.is+adj.。

e.g.Itisveryimportantforstudentsto

learnEnglishwell.

對(duì)學(xué)生們來說學(xué)好英語是很重要的。Itis+adj.+of

+sb.+todosth.，常用于此句型的形容詞有g(shù)ood,kind,nice,clever,wise等，用來對(duì)sb.的性格、品質(zhì)等進(jìn)行說明，將這個(gè)句型中的sb.和adj.提出來可以造句為sb.+be+adj.。e.g.你這樣說真是太好了。

It’sverykindofyoutosayso.根據(jù)漢語提示寫單詞。1.Ishe________(嚴(yán)肅的)?2.Wecan________(減少)airpollution byridingbicycles.3.Heis________(挖洞)inthegarden.4.Wecan________(回收利用)oldthings.5.Itis____(明智的)of