Unit2SavingtheEarth

Topic1Pollutionhascausedtoomanyproblems.

SectionALearningaimsLearnsomenewwordsandphrases.

Gettoknow:bee,butterfly,pour,villager,destroy,Beabletouse:mess,shame,several,waste,cutdownBeabletousesomeusefulexpressions.

Whatamess!Whatashame!…youcanseebeesandbutterfliesdancing.…thereareseveralchemicalfactoriespouringwasterwaterintothestream.Talkaboutthechangescausedbypollution.

MakesurethatyouhavemasteredthedifferencesbetweenSimplePastandPresentPerfecttense.現(xiàn)在完成時態(tài)(二)1)表示動作發(fā)生于過去并持續(xù)到現(xiàn)在.2)常用的時間狀語：

for+一段時間

since+時間點(diǎn)/一段時間+ago/+一般過去時態(tài)的句子（用howlong提問）3)表示持續(xù)動作或狀態(tài)的動作常用延續(xù)性動詞。eg.這本書我買了一年了。

Ihavehadthebookforoneyear.(不能用buy)Revisioninclass延續(xù)性動詞be(in/at)---beaway(from)beopenbedeadhavebeonkeepbemarriedhaveacoldbeclosedbeamemberof/bein+組織beillbebeawakeRevisioninclassExercisesinclassA.Theycametoourschoolin1980.B.They____________ourschoolsince1980.2.A.Themandiedfiveyearsago.B.Theman____________forfiveyears.3.A.Themeetingbegantwominutesago.B.Themeeting____________fortwominutes.4.A.Weborrowedtwobookslastweek.B.We________thetwobooksforaweek.havebeeninhasbeendeadhasbeenonhavehadListento1aandanswerthefollowingquestions.1.Whenwilltheygoforapicnic?A.OnFriday

B.OnSaturday

C.OnSunday2.WhowenttotheWestHilltwoyearsgao?

A.Maria

B.Kangkang

3.Whatarementionedinthepast?A.Chemicalfactories

B.Beesandbutterflies

4.Whatcanweinferfromthispassage?A.Kangkangandhisfriendswon’thaveapicnichere.B.Wecanseelotsofflowersandgrassnow.C.Chemicalfactoriesdidn’tpollutethewater.CCAB____beautiful____butterflies____dirty____grass____terrible____factory____bees____fresh____clean____wastewaterPPNPNNPPPN1bListento1aandmarkthewordswithP(Past)orN(Now).TwoyearsagoNow1.Itwasa_______________.2.Therewere_______________________.3.Theairwas__________________________andyoucouldsee_______________________.1.___________________havegone.2.Thewateris________andsmells___________.3.Thereareseveral________________pouring__________intothestream.4.__________haschanged.beautifulplacelotsofflowersandgrassfreshandthewaterwascleanbeesandbutterfliesdancingTheflowersandgrasssodirtyterriblechemicalfactorieswastewaterEverythingLanguagePoints

1.seesb./sth.doingsth.看見某人/某物正在做某事

seesb./sth.dosth.看見某人/某物做了某事(hear,watch,find,feel…)e.g.(1)IsawJack_________soccertherewhenIwalkedpasttheplayground.A.toplayB.playingC.playedD.play(2)Isawher________theroadjustnow.

A.crossB.crossedC.crossesD.tocross2.have/hasgone=have/hasdisappeared不見了，消失了3.therebe+sb./sth.+doingsth.有某人/某物正在做某事eg.Therearesomepeoplewaitingforthebusatthebusstop.therebesth.todo有某事要做eg.Thereismuchworktofinishtoday.4.wastevi.&vt.浪費(fèi),徒勞Don’twastepaper.不要浪費(fèi)紙。adj.廢棄的,無用的wastewatern.廢料,廢棄物\浪費(fèi);濫用;未充分利用(不可數(shù))awasteof----BALanguagePoints

5.pourv.倒出；傾瀉pour…into…把……倒入……e.g.Pourredwineintotheglass.6.messn.骯臟，雜亂inamess雜亂不堪，一團(tuán)糟whatamess!太亂/多糟糕啊！7.shamen.羞恥，羞愧

whatashame!=whatapity!真遺憾！8.havegone=havedisappeared消失了9.cutdown 砍倒,砍伐cut---into---把---切成---cutup把---切碎cutoff裁剪---10.Thankgoodness謝天謝地

2Workinpairs.Lookatthepicturesandmakeupconversationssimilartotheexamplewithyourpartner.village/flowersandgrassvillagers/destroyhill/treesfarmers/cutdownlake/fishfactory/pollute一般過去時和現(xiàn)在完成時的用法區(qū)別一般過去時現(xiàn)在完成時用法連用的詞和短語表示過去發(fā)生或已完成的動作對現(xiàn)在的影響或產(chǎn)生的結(jié)果（與現(xiàn)在無關(guān)）表示過去發(fā)生的動作或存在的狀態(tài)（與現(xiàn)在無關(guān)）yesterday,last+時間名詞,時間段+ago,in2005,inthepast,justnow…

for+時間段,since,recently,sofar,already,yet,just,ever,never,beforeinthepast+時間段,

5321463.A.Listentothesentencesandnumberthepictures.1.People_______________toomanytrees,soIdon’thaveenoughleavestoeat.2.Iliveintreesbutnowmanytrees______________.3.Ilikeleavesandgrass,butnowthey________________.4.I______________hungryformonthsbecauseoflessbamboo.5.Humanpollutedthesea,soI______________________.6.Thewater________________manyyearsago.Butit______________________formetoliveinnow.

havecutdownhavegonehavedisappearedhavebeendon’tlivehappilywascleanistoodirty4Workingroupsandtalkaboutpollutioninaplaceyouarefamiliarwith.Thefollowingsentencesmayhelpyou.

…ago,itwas…Now,…h(huán)ave/hasgone.Whathashappened?Everythinghaschanged.Oh,mygoodness!Exercisesinclass1.看見某人正在做某事2.看見某人做了某事3.已經(jīng)消失4.某人/某物正在做某事5.有某事要做6.把…倒/排入…7.去野炊8.砍伐9.把---切碎10.太多的，如此多的11.太多的，如此多的12.太亂/多糟糕啊！13.真遺憾！14.浪費(fèi)---15.謝天謝地16.為---計(jì)劃---seesb.doingsth.seesb.dosth.havegone=havedisappearedthereissb./sth.doingsth.therebesth.todopour…into…h(huán)aveapicnic=go(out)forapicniccutdowncutuptoo/somuch+不可數(shù)n.too/somany+可數(shù)n.whatamess!whatashame!=whatapity!=athat’stoobadawasteofThankgoodness.plansth.for---=makeaplanfor1.Look!Therearesomeboys________ontheplayground.A.playfootballB.areplayingfootballC.playingfootballD.playsfootball2.—I’msorryIcan’tgoshoppingwithyou.Iamill.

—________A.Whatamess!B.Whatashame!C.Whatapity!D.BandC3.—Don’t________water.Wemustsaveeverydropofit.

—Sorry,Iwon’tdoitagain.A.wasteB.throwC.playD.leave4.WhenIenteredtheroom,IsawMaria__________(read)aChinesebook.5.Whatashame!Theflowersandtreesintheparkhave___________(go).6.Everything_____________(change)inthepastfewyears.7.Pandasdon’thaveenoughbamboos__________(eat)nowbecauseofthepollution.