【课件】Unit 5 Using Language 课件人教版高中英语选择性必修第一册

ChemicalVersusOrganicFarming化学与有机农业的比较[ˈvɜːsəs]versusprep.与…相对;与…对阵各段长难句和短语第一段：3.Overtime,however,whatsomescientistshavefound

isthat

theirlong-termusecansometimesharmboththelandandpeoples’health.短语：1.被广泛使用

beinwidespreaduse2.首次被引入

befirstintroduced3.做某事的好方法

agreatwaytodosth4.随着时间的推移

overtime第二段：3.Thisaffectsthecropsgrownonthelandand,inturn,urn①轮流②相应地①Whenyouplaycards,eachplaysinturn.②Workingoutsidecanmeantoomuchsunexposure,whichinturncanleadtoskincancer.byturns轮流taketurnstodosth轮流做某事It’sone’sturntodosth轮到某人做某事①SamandIdrovecars______turns.②Inourclass,wetaketurns________(do)thedutyreport.bytodo5.Infact,somepesticideslikeDDThavebeenprohibitedinmostcountriesbecauseofthedamagetheycausetopeopleandtheenvironment.定语从句，省略了引导词that/which6.Asforchemicalfertilisers,cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.grow--grew--growngrowth短语：1.通过做某事

bydoingsth2.此外

inaddition3.至于，关于asfor4.化肥chemicalfertiliser5.富含营养berichinnutrition6.必要的矿物质essentialminerals7.口味不足havelessflavour8.也aswell第三段：短语：1.转向

swithto/turnto2.聚焦于

focuson3.没有疾病

freeofdisease4.means单复同形第四段：2.Theyoftenchangethekindofcropgrownineachfieldeveryyear.4.Whydifferentcropsaregrownisbecausetheyputimportantmineralsbackintotheground,makingitreadyagainforthenextbatchofcrops.短语：1.比如

forinstance2.不同层次的土壤

differentdepthsofsoil3.扎根很深

putdowndeeproots4.避免破坏环境avoiddamagetotheenvironment第五段：2.Whatkeepsthemfromdoingsoisthefactthatchemicalfarmingservesthehighdemandforfoodaroundtheworld.阻止他们这样做的原因是，化学农业服务于全世界对食物的高需求。3.Organicfarmingisnowherenearableto

meetthatneed.绝不可能...满足那一需求4.Therefore,thereisstillalongwaytofindasuitablesolutionthatputssufficientfoodonthedinnertablewhilekeepingpeopleandtheenvironmentashealthyaspossible.课文知识点1.notonly...but(also)...Sheontonly_____(write)thetextbutalsoseltctedtheillustrations.[ˌɪləˈstreɪʃən]n.插图NotonlymyfriendbutalsoI____(be)presentattheconference.就近wroteam2.make+宾语+宾补

名词/介词短语/形容词

动词原形/过去分词Thebossmadethem______dayandnight.老板让他们日夜工作。workTheexperiencewillmakehim_______.这次经历会让他成为一个男子汉。

amanCanyoumakeyourself________(understand)inRussian?Nothingwillmakeme_________(change)mymind.Tomaskedthecandy-makeriftheycouldmakethechocolateeasier________.(break)understoodchangetobreak3.现在分词做结果状语ManypeoplemovedtoNewYork,

makingitthelargestcityintheUSA.Hisparentsdiedearly,leavinghimanorphan.Hefelloffthebike,___________________________.头撞到一块大石头上。MorehighwayshavebeenbuiltinChina,_____________(使...更容易）forpeopletotravelfromoneplacetoanother.knockinghismakingiteasierheadonarock4.同位语从句

Ihavenoidea__________________inthenextroomnow.她在干什么Therearosethequestion