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1、高一外研版必修三Module2DevelopingandDevelopedCountriesGrammarGrammar-1.RevisionHeisveryyoung,_____heknowsalotaboutcomputer.A.andB.howeverC.butD.while2.Excusemeforbreakingin,_____Ihavesomenewsforyou.A.soB.andC.butD.yetCC3.Somepeoplewastealotoffood_____othershaven’tenoughtoeat.A.howeverB.whenC.asD.whil
2、e4._____hehadtowriteahistorypaper._____hecouldn’tfindtimetodoit.A.Although;butB.Although;/C.Eventhought;/D.Evenif;/DB(1)but和however两者都可以翻译为“但是、然而”，但是两者的用法不同。However既可以放在句首也可以放在句中，并且后面一般要有逗号，but常用于句中，不加逗号。(2)while与but两者都有“然而、而”的意思。While强调两着的对比，而but强调转折。(3)while与although都用来表示两者对比，但while是并列连词，引导
3、并列句。although为 从属连词，引导让步状语从句。一.连词：but,however,although,while1.连接两个并列分句Honeyissweet,butthebeestings.Ioughttohavehelpedher,butIevercould.2.连接两个并列成分Theyseethetreesbutnottheforest.Henolongerfeltdisappointed,buthappyandhopeful.3.后接状语Hetriedtosaveit,butinvain.Heglancedabout,butseeingonlytheemptyroom
4、.However1.多插在句子中间(1)Hisfirstresponsewastosayno.Later,however,hechangedhismind.(2)Theproductionislowthismonth.However,therewillbeanincreasenextmonth.2.有时也放在句首或句尾I’llofferittoTom.However,hemaynotwantit.YouknowallthisaswellasIdo,however.although常用来引导让步状语从句,与though同义Althoughitwasbarelyfouro’clock
5、,thelightswerealreadyon.Hesaidtheyweremarried,althoughI’msuretheyaren’t.He’sverylovablealthoughnotatalltidy.While常用来引导状语从句，表示对比、让步、时间等。Somecountriesarerich,whileothersareextremelypoor.WhileTom’sverygoodatscience,hisbrotherisabsolutelyhopeless.Whiletheyaremyneighbors,Idon’tknowthemwell.Strikew
6、hiletheironishot.Grammar-2.ObservationWearemakingprogressbutweneedtomakegreaterefforts.Inadevelopedcountry,peoplehaveniceclothestowear,however,inapoorcountry,peoplehavefewclothes.表示转折关系的并列句，常由连词but,yet,while,however,nevertheless等连词连接。常译为“但是”、“可是”、“然而”等。Grammar-3.ExerciseFinishActivity1，Page14
7、Answers:(1)Yes(2)However(3)But(4)HoweverGrammar-4.ExercisesFinishtheexerciseofActivity2，Page14.InadevelopedcountryInapoorcountrypeoplehaveniceclothestowear.mostpeoplehaveahomeonecangetgoodmedicalcare.peoplehavesmallfamilies.butinapoorcountryp
