高中英语 unit2 Working the land section3课件 新人教版必修4.ppt

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1、WorkingthelandUnit2SectionⅢ　UsingLanguageUnit2课堂要点探究2课堂达标验收3课前新知预习1课时作业4课前新知预习Ⅰ.单词速记1．________(n.)营养；滋养；食物2．________(vt.)画底线标出；强调________(adj.)画线的3．________(n.)总结；摘要；强调__________(v.)强调，总结4．________(n.)评论；议论(vi.&vt.)表达意见；作出评论5．________(vt.)使迷惑；使为难→confusing(adj.)令人迷惑的→confuse

2、d(adj.)感到迷惑的→confusion(n.)迷惑6．________(vt.)遗憾；惋惜(n.)遗憾；懊悔→regretful(adj.)后悔的nutritionunderlineunderlinedsummarysummarizecommentconfuseregret7．________(adj.)化学的；关于化学的→chemistry(n.)化学8．________(n.)生产；制造→produce(v.)生产9．discover(vt.)发现→________(n.)发现；发觉10．________(vt.)减少；减缩→redu

3、ction(n.)减少chemicalproductiondiscoveryreduceⅡ.短语互译1．对……造成损害________________2．洗掉________________3．逐渐增强；建立；开发________________4．导致；造成(后果)________________5．turnto________________6．focuson______________________7．keep...freefrom/of...__________________________________________8．pre

4、vent...from...________________causedamagetowashoffbuildupleadto转向集中(注意力、精力等)于使……免受(影响，伤害等)；使……不含(有害物)阻止……做……Ⅲ.完成句子1．在过去的50年里，在农业中使用化肥已很普及。Overthepasthalfcentury,___________________________hasbecomeverycommoninfarming.(动词－ing形式作主语)2．他们专心于使土壤肥沃并且无病害。Theyfocuson________________

5、_________________.(keep＋宾语＋宾语补足语)usingchemicalfertilizerskeepingtheirsoilrichandfreeofdisease3．他们觉得这可以让地里的土壤更富含矿物质，从而变得更肥沃。Theyfeelthatthis____________________________________________________________________________.(make＋宾语＋宾语补足语)makesthesoilintheirfieldsricherinmineralsand

6、somorefertile4．为了阻止风把土壤吹走或水把土壤冲走，使用有机耕作的农民们喜欢在作物之间种草并且把它留在地里成为下年作物的天然肥料。Someorganicfarmers_______________________________________________________________________________，andthenleavingitinthegroundtobecomeanaturalfertilizerforthenextyear'scrop.(preferdoing...喜欢做……；prevent...

7、fromdoing...阻止……做……)preferplantinggrassbetweencropstopreventwindorwaterfromcarryingawaythesoilⅣ.课文理解Step1FastReadingScanthepassageandthenchoosethebestanswersaccordingtothepassage.1．Fromthepassage,wecanseeorganicfarmersarethosewho________.A．growcropswithchemicalfertilizersB．g

8、rowcropswithnaturalfertilizersC．produceorganicfertilizersD．carefortheenviro