人教新目標(biāo)(Go for it)版九年級全冊Unit 13 We are trying to save the earth-Section A 3課件(共29張PPT)

第第頁人教新目標(biāo)(Goforit)版九年級全冊Unit13Wearetryingtosavetheearth-SectionA3課件(共29張PPT)(共29張PPT)

九年級英語下冊（RJ）教學(xué)課件

SectionA

GrammarFocus-4c

Unit13

Wearetryingtosavetheearth.

Revision

不同種類的污染

2.河底

3.把垃圾扔到河里

4.在……中起作用

differentkindsofpollution

thebottleoftheriver

throwrubbishintotheriver

playapartin

I.Checkifyouknowthesephrases.

5.在中國南部

6.對……有害

7.在……頂部

8.海洋生態(tài)系統(tǒng)

insouthernChina

beharmfulto

atthetopof

theocean’secosystem

II.Translatethesentences.

1.甚至是河底都滿是垃圾。

2.這個方法不僅殘酷還對環(huán)境有害。

Eventhebottomoftheriverwasfullofrubbish.

Thismethodisnotonlycruel,butalsoharmfultotheenvironment.

3.鯊魚處于海洋食物鏈的頂部。

4.許多人相信魚翅對健康有好處。

Sharksareatthetopofthefoodchainintheocean’secosystem.

Alotofpeoplebelievethatshark’sfinsaregoodforhealth.

GrammarFocus

Payattentiontothesentences.

1.We’retryingtosavetheearth.

2.Theriverusedtobesoclean.

3.Theairisbadlypolluted.

4.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.

5.Weshouldhelpsavethesharks.

Presentprogressive

usedto

Passivevoice

Presentperfect

Modalverbs

現(xiàn)在進(jìn)行時:PresentProgressive

結(jié)構(gòu):be(am/is/are)+v.-ing

標(biāo)志詞：Look,Listen,now,rightnow…

e.g.Look!Theboyiscrying.

定義：表示說話時(瞬間)正在進(jìn)行的動作,也表示目前或現(xiàn)階段正在進(jìn)行的動作。

1.

Exercises

Whatafinedaytoday!

Look!Whataretheydoing

usedtodosth.表示過去常常做某事,而現(xiàn)

在往往不做了,后接動詞原

形。

beusedtodoingsth.表示習(xí)慣于做某事

e.g.Iusedtogetupatsixo’clock.

Joeisusedtodrinkingacupofcoffeeeverymorning.

usedtodo與beusedtodoing

2.

Exercises

Translation.

1.她過去常常周末和朋友閑逛。

Sheusedtohangoutwithfriendsonweekends.

2.他習(xí)慣于每天晚上睡得很晚。

Heisusedtostayingup.

被動語態(tài)：Passivevoice

定義：表示主語是動作的承受者，即行

為動作的對象的一種語態(tài)。

結(jié)構(gòu)：be+過去分詞

e.g.Anewschoolwasbuiltlastyear.

Ourclassroomiscleanedeveryday.

3.

Exercises

TranslatethesentencesbyusingPassivevoice.

1.剛才一些老年人參觀了博物館。

2.工人們使用不同種類的機(jī)器工作。

Themuseumwasvisitedbysomeoldpeoplejustnow.

Differentkindsofmachinesareusedtoworkbytheworkers.

結(jié)構(gòu):has/have+過去分詞

標(biāo)志詞：already,yet,ever,never,since,

for…

e.g.Ihaven’tfinishedmyhomeworkyet.

定義：表示動作已經(jīng)完成,但對現(xiàn)在造成影

響;或者表示從過去某一時間開始一

直延續(xù)到現(xiàn)在并還可能持續(xù)下去的

動作。

現(xiàn)在完成時:PresentPerfect

Completethefollowingsentences.

I_________(be)inBeijingfortwoyears.

2.I_____never_____(hear)ofthat

manbefore.

3.Tom__________(work)theresince

twoyearsago.

havebeen

have

heard

hasworked

Exercises

4.Thetwins___________(wash)theclothesforanhour.

5.He_________(play)basketballsincethreeyearsago.

6.Howlong____Sally_____(sing)yet

havewashed

hasplayed

has

sung

1.情態(tài)動詞本身有一定的詞義,表示說話人的情緒、態(tài)度或語氣,但不能單獨作謂語,只能與其他動詞構(gòu)成謂語。常見的有:can(could),may(might),must,need,shall(should),will(would)等。

情態(tài)動詞

4.

2.情態(tài)動詞無人稱和數(shù)的變化,后接動詞原形。否定式是在情態(tài)動詞后面加not。個別情態(tài)動詞有過去式形式,可用來表達(dá)更加客氣、委婉的語氣。

e.g.Kencanclimbupthetresslikea

koala.

Tracycouldrideabicyclewhen

shewasfiveyearsold.

Youmustn’tplaywithfire.Itis

dangerous.

Exercises

Translation.

1.我們不能在教室里吃東西。

2.首先你必須完成作業(yè)。

3.他現(xiàn)在不可能在家。

4.她一定知道這個問題的答案。

Wecan’teatintheclassroom.

Youmustfinishyourhomeworkfirst.

Hecan’tbeathomenow.

Shemustknowtheanswertothisquestion.

4a

Fillintheblankswiththecorrectformsoftheverbsinbrackets.

Joe:_____youever______(take)partin

anenvironmentalproject

Eric:Yes,Ihave.I______(help)witha

Clean-UpDaylastyear.Itwas

__________(consider)thebiggest

clean-upprojectthiscity____ever

____(have).

Have

taken

helped

considered

had

had

參加

Joe:Howmanypeople____(take)part

Eric:I_____(think)morethan1,000

people______(come)tohelpout.

Joe:That’sfantastic!Iguesseveryonein

thiscityis______(try)toimprove

theenvironment.

Eric:Yes,wecan’taffordto____(wait)

anylongertotakeaction!

took

think

came

trying

wait

v.承擔(dān)得起(后果);買得起

4b

Fillintheblankswiththeappropriate

modalverbsfromthebox.

People__________thinkthatbigthings

______bedonetosavetheearth.Many

forgetthatsavingtheearthbeginswith

smallthings.Forexample,you____save

may/might

must

can

canwouldcould

havetoshouldmust

may/might

electricitybyturningoffthelightswhen

youleavearoom.You______alsouse

reusablebagsinsteadofplasticbags.Ithinkit’sagreatideathatyounow______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you__________rideyourbikeorwalk.Ifit’sfar,you__________takethebus.Allthese

could

haveto

can/should

can/could

關(guān)掉

adj.可重復(fù)使用的

付費;付出代價

smallthings______addupandbecomebigthingsthat_________improvetheenvironment.Let’stakeactionnow!

could

would/can

采取行動

4c

Makealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.

usepublictransportation(n.交通運輸);

turnoffthelightswhenyouleavearoom;

usereusablebagsinsteadofplasticbags;

rideyourbikeorwalktoschoolorwork;

stopusingpapernapkins(餐巾紙);

recyclebooksandpaper

…

Discussion

Ithinkthateveryoneshouldusepublictransportation.

Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation…

Languagepoints

1.Wecan’taffordtowaitanylongertotakeaction!

affordv.承擔(dān)得起;提供,給予

affordtodosth.(常與can,beableto連用)買得起;有足夠的……

e.g.Wecan’taffordtopaysuchaprice.

我們付不起這個價錢。

Dancingaffordsuspleasure.

跳舞給我們帶來快樂。

2.…saveelectricitybyturningoffthelightswhenyouleavearoom.

turnoff關(guān)掉

e.g.Pleaseturnthetelevis