Unit 2 Saving the earth. Topic 1 Pollution has causes too many problems.SectionA课件（32张PPT内嵌音视频）202

第第页Unit2Savingtheearth.Topic1Pollutionhascausestoomanyproblems.SectionA课件（32张PPT，内嵌音视频）202(共32张PPT)

Unit2SavingtheEarth

Topic1Pollutionhascausedtoomanyproblems.

SectionA

词汇积累

Wecanseebeesandbutterfliesdancing.

Newwords

Wecanseebeesandbutterfliesdancing.

bee

butterfly

wastewater

wastepaper

Wastewater.浪费水。

Don’twastepaper.不要浪费纸。

waste

adj.

v.

倒出；倾泻

pour…into…把……倒入……

e.g.Pourredwineintotheglass.

Haveyoueverhadapicnic

o...

seesb.doingsth.

soundgreat

smellterrible

Therebesb./sth.doingsth.

haveapicnic

lotsof=alotof

cutdown

planapicnic

向投入/倒入

看见某人正在做某事

听起来不错

闻起来很臭

有某人/某物正在做某事

野餐

许多

砍倒

计划一次野餐

Phrases

课文关

village/flowersandgrass

villagers/destroy

Example:

A:ThevillagersdestroyedtheflowersandgrasswhenIvisitedthevillagelastyear.

B:Butnow_________________________________

A:Whathashappenedhere

B:__________________________________________________________________

theflowersandgrasshavecomeback.

Thevillagershavelearnedthattheywerewrong.Andtheyhavedonealottomakethevillageabetterplace.

2Workinpairs.Lookatthepicturesandmakeupconversationssimilar

totheexamplewithyourpartner.

hill/trees

farmers/cutdown

A:ThefarmerscutdownmanytreeswhenIvisitedthehilllastyear.

B:Butnow_________________________________

A:Whathashappenedhere

B:__________________________________________________________________

thetreeshavecomeback.

Thefarmershaveplantedmanytreesonthehill.

city/lake/fish

factory/pollute

A:ThefactorypollutedthelakeandlotsoffishesdiedwhenIvisitedthecitylastyear.

B:Butnow_________________________________

A:Whathashappenedhere

B:__________________________________________________________________

therearelotsoffishesinthelake.

Thefactoryhasgone.

Haveyoueverhadapicnic

Haveyoueverhadapicnic

Kangkang,Jane,MariaandMichaelareplanningapicnicforSunday.

TheywillgototheWestHill.

Oh,mygoodness.Whatamess!

Theflowersandgrasshavegone!

Look!Thereareseveralchemicalfactoriespouringwastewaterintothestream.

=havedisappeared.

Wasitbeautiful

Whathashappenedthere

Whatcanyouseethere

Wecanseebeesandbutterfliesdancing.

bee

butterfly

IstheWestHillbeautiful

1bListento1aandmarkthewordswithP(Past)orN(Now).

____beautiful____butterflies____grass____factory

____bees____fresh____clean____wastewater

P(Past)

N(Now)

N

N

N

P

N

N

N

P

(Kangkang,Jane,MariaandMichaelareplanningapicnicforSunday.)

JaneandMaria:Kangkang,whereshallwego

Kangkang:WhatabouttheWestHill

Jane:Iwenttheretwoyearsago.

Itwasamess.

Therewereseveralchemicalfactories

pouringwastewaterintothestream.

Michael:Whatashame!

Kangkang:Ihaveheardithasbecomeabeautifulplace.

Therearelotsofflowersandgrass.

Michael:Soundsgreat!Let’sgothere.

(OnSunday,theycometotheWestHIll.)

Maria:Oh,whatabeautifulplace!

Theairisfreshandthewaterisclean,

andyoucanseebeesandbutterfliesdancing.

Kangkang:Everythinghaschanged.

Michael:Doyoustillwanttohaveapicnichere

Jane:Ofcourse.

1cRead1aandcompletethesentencesinthetable.Thenretell1atoyourpartner.

TwoyearsagoNow

1.Itwasa_______________.2.Therewereseveral_______________________pouring____________intothestream.1.Theairis______andthewateris_______.

2.Youcansee_________________dancing.

3.________________haschanged.

mess

chemicalfactories

wastewater

fresh

clean

beesandbutterflies

Everything

1aListen，lookandsay.

3A.Listentothesentencesandnumberthepictures.

5

3

2

1

4

6

1.People_______________toomanytrees,so

Idon’thaveenoughleavestoeat.

2.Iliveintreesbutnowmanytrees__________.

3.Ilikeleavesandgrass,butnowthey_____

____________.

4.I__________hungryformonthsbecauseof

lessbamboo.

5.Humanpollutedthesea,soI__________________.

6.Thewater__________manyyearsago.Butit

_______________formetoliveinnow.

B.Listenagainandcompletethesentences.

havecutdown

havegone

have

disappeared

havebeen

don’tlivehappily

wasclean

istoodirty

4Workingroupsandtalkaboutpollutioninaplaceyouarefamiliarwith.Thefollowingsentencesmayhelpyou.

…ago,itwas…Now,…have/hasgone.WhathashappenedEverythinghaschanged.Oh,mygoodness!

语法关

Keypoints:

1.Theairisfreshandthewaterisclean,andyoucanseebeesandbutterfliesdancing.

seesb.doingsth.看见某人正在做某事

seesb.dosth.看见某人做了某事或常常做某事

（watch,lookat,hear,listento,find,notice等词用法相同)

eg.

1.Ioftenseetheboys________(play)football.

2.Iheardher_________(cry)at8:00lastnight.

3.Henoticedme________(look)athimwhenIwalkedpasttheshop.

4.Listen!Canyouhearsomeone_______(play)thepianoloudly

5.WhenIpassedtheclassroom,Isawher______(do)herhomework.

6.Onmywaytoschool,IsawaUFO______(fly)inthesky.

play

crying

looking

playing

doing

flying

back

2.Oh,whatamess!Theflowersandgrasshavegone!

(1)messn.脏，乱

介词短语：inamess动词短语：makeamess

翻译句子：你的房间好乱。

Youroomis_______________.

You_______________inyourroom.

—WhywasMike’smotherangrywithhim

—Becausehemadea_______athome.

A.ruleB.recordC.differenceD.mess

inamess

makeamess

D

back

(2)govi.不见了，消失了=disappeared

vi.变得（gobad变质)

翻译句子：我的笔不见了。

Mypenhas_______________.

花草都消失了！

Theflowersandgrass_______________!

这鱼变质了！

Thefish_________________!

Thefishsmellsterribel.Ithas_______bad.

A.turnedB.wentC.becomeD.gone

gone/disappeared

havegone

D

hasgonebad

3.Look,thereareseveralchemicalfactoriespouringwastewaterintothestream.

(1)Therebe+sth./sb.+doingsth.有某人/某物正在做某事

eg.Therearepeopleplayinginthepark.

Therearesomepeople__________(pick)applesonthefarm.

Look!There______aman_______(sit)underthetree.

练习：

1.Thereismuchwastegas________(pour)fromthechemicalfactory.

2.Look！Thereisakite______inthesky.

A.flyB.fliesC.toflyD.flying

拓展：therebesth.todo.有某事要做(还未做）。

eg.Thereisnotime_________(think).没有时间去想了。

picking

issitting

pouring

D

tothink

back

(2)several几个，数个=some/afew

eg.Thoughheisnew,hehas________goodfriendsinhisclass.

(3)pour...into...向投入/倒入

练习：

1.People________(pour)wastewaterintoriversandlakesinthepast.

2.Thegovernmentdecidedtopourmillionsofdollars____educationsothatpoorchildrencouldgetabettereducation.

A.downB.intoC.inD.onto

拓展：therebesth.todo.有某事要做(还未做）。

eg.Thereisnothing_________(do).没有事可做。

several

poured

B

todo

back

Exercises

()1.Look!Therearesomeboys________ontheplayground.

A.playfootballB.areplayingfootball

C.playingfootballD.playsfootball

()2.—I’msorryIcan’tgoshoppingwithyou.Iamill.—______

A.Whatamess!B.Whatashame!

C.Whatapity!D.BandC

()3.—Don’t________water.Wemustsaveeverydropofit.

—Sorry,Iwon’tdoitagain.

A.wasteB.throw

C.playD.leave

C

D

A

用所给动词的适当形式填空。

1.WhenIenteredtheroom,IsawMaria________(read)a

Chinesebook.

2.Whatashame!Theflowersandtreesinthepark____