【教學(xué)】Unit 13 Section A 第2課時(shí) 參考（九全）

Unit13We’retryingtosavetheearth.Period2SectionA3a-3bRevisionTranslation.1.甚至河底都滿是垃圾。2.這個鎮(zhèn)上的每個人都應(yīng)該參與清掃。Eventhebottomoftheriverwasfullofrubbish.Everyoneinthistownshouldplayapartincleaningitup.3.騎自行車有其它的優(yōu)點(diǎn)。4.我買外賣食品從來不拿木筷子和塑料叉子。Thereareotheradvantagesofbikeriding.InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.RevisionWarm-upTheearthisbadlypolluted.Whatshouldwedotosavetheearth?Let’stakeaction(采取行動)Turnoffthelightswhenyouleavearoom.Recyclebooksandpaper.Takebusesinsteadofdrivingcars.Warm-upSomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!Savetheearth!Savetheanimals!Warm-upThezoosprovidehomesformanyendangeredanimals.Warm-upLead-in1.Whatdoyouknowaboutsharks(鯊魚)?2.Doyouthinksharkscanbeendangered?Why?3.Whatdoyouthinkmightcauseafallinthenumberofsharks?Lead-inReadingWheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20to30yearsTwoenvironmentalgroupsagainst“finning”southernChina70millionover90percentWildAidandtheWWF3aReadthepassageaboutsharksandcompletethefactsheetbelow.Retellthepassageaccordingtothewordsbelow.sharkfinsoupinsouthernChinaeachtimecutoffnolongernotonly…butalso…atthetopdropbeendangeredthestrongestaround70millionfallenbyover90percentWildAidandtheWWFdeveloplawsscientificstudiesReading3bReadthepassageagainandfillintheblankswiththewordsinthebox.ReadingsoalthoughifbutwhenManypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,____iftheirnumbersdrop,theocean’secosystemwillbeindanger.whenso3.Manythinkthatsharksaretoostrongtobeendangered,_____theyarewrong.4._________therearenoscientific

studiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday___wedonotdosomethingtostopthesaleofsharkfins.butAlthoughifadj.

科學(xué)上的，科學(xué)的ReadingExplanation1.Asharkcannolonger

swimandslowlydies.鯊魚不能再游泳然后慢慢死掉。nolonger意思是“不再”,相當(dāng)于notanylonger。e.g.Mr.Brownnolonger

workshere.

布朗先生不再在這里工作了。2.Thismethodis

notonly

cruel,butalso

harmful

to

theenvironment.

這種方法不但殘忍而且對環(huán)境有害。notonly…butalso…用于連接兩個表示并列關(guān)系的成分，著重強(qiáng)調(diào)后者，其意為“不僅……而且……”;其中的also有時(shí)可以省略。Explanatione.g.Shenotonly

playswell,butalsowritesmusic.

她不但很會演奏，而且還會作曲。

Notonly

men

butalso

womenwerechosen.

不僅僅是男的，女的也有被選中的。Explanation若連接兩個成分作主語，其謂語通常與靠近的主語保持一致。e.g.Notonly

you

butalsohehasto

leave.

不只是你，他也得離開。

notonly放在句首,后接句子時(shí)要用倒裝結(jié)構(gòu)。

e.g.Notonly

had

thepoormanbeenfined,butalsohehadbeensenttoprison.

這個可憐的人不僅被罰款，而且還被送進(jìn)了監(jiān)獄。Explanationbeharmfulto對……有害e.g.Smokingisharmfulto

thehealth.

吸煙有害健康。

Playingcomputergamesmuchisharmfulto

students.

電腦游戲玩太多對學(xué)生有害。Explanation3.Sharksareatthetopof

thefoodchainintheocean’secosystem.

鯊魚位于海洋生物系統(tǒng)食物鏈的頂部。atthetopof在……最高地位;用最高[最大]的(速度,聲音等)e.g.Heshoutedatthetopof

hisvoiceinorderthathemightbeheard.

他盡力大聲叫喊,以便別人能聽見。Explanation4.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.

如果它們的數(shù)目降至過低，會給所有海洋生物帶來危險(xiǎn)。此句復(fù)數(shù)形式的numbers表達(dá)全海洋中鯊魚的總量。當(dāng)表示數(shù)值的高或低時(shí)，number要用high或low修飾。Explanatione.g.Inthatcountry,thenumberofchildrengoingtoschoolishigher

incitiesthanintownsandvillage.

在那個國家，城市兒童入學(xué)人數(shù)比鄉(xiāng)鎮(zhèn)及農(nóng)村要高。