仁爱九年级Unit2Topic2SectionB(公开课)

SectionB Topic2Alltheseproblemsareveryserious Unit2SavingtheEarth ByLuoChenghuiinDuqiMiddleSchool Project1 Howshouldweprotectourschoolenviroment Discussingroups thengiveyourways 1 Lookatthepictures Doyouknowwhattheyare Presentation Whatbadweather Thewindisblowingstronglywithlotsofsand It sasandstorm 沙尘暴 2 Doyouknowwhatcausesthesesandstorms DiscussingroupsFinish1c project2 Numberthepicturesandtalkaboutthemingroups Doyouknowhowsandstormscomeintobeing 4 1 5 3 6 2 形成 manytrees cutdowntrees forestsgone washtheearthaway changeintothedesert Sandstormscomeintobeing Project3 Howdosandstormscomeintobeing Discussingroups thengiveyourreport Listento1aandanswerthequestionsin1b Cuttingdowntoomanytreescancausesandstorms Buthowcanthesetreesaffecttheweather Leading 1 Whataretheytalkingabout 2 Whatcausesthiskindofbadweather Theyaretalkingaboutsandstorms Peoplehavecutdowntoomanytrees Alotofrichlandhaschangedintodesert 1bworkalone bad cut down stop from be saved washing away Listento1aagainandfillintheblank Read1a writedownthefunctionsoftrees Trees functions Treescanstopthewindfromblowingtheearthaway Alotofwatercanbesavedbyforests Treescanalsopreventthewaterfromwashingtheearthaway A B C Read1a writedownthefunctionsoftrees importantpoints 1 cutdown砍倒e g 1 别砍树木 Don tcutdownanytrees 2 砍倒树木对人类和动植物有害 Cuttingdowntreesisharmfultohumanbeings animalsandplants cut的现在分词为cutting 过去式和过去分词均为cut Cutdowntoomanytrees是动词短语 它作主语要用ving或todo形式 其谓语用第三人称单数 e g Fightingisrudebehavior 注意 2 changesth intosth 把 变成 e g 我想把这些美元兑换成人民币 I dliketochangetheseU S dollarsintoRMB 3 stopsb sth from doingsth preventsb sth from doingsth 阻止某人 某物做某事 from可省略 e g 1 我们应该阻止他抽烟 Weshouldstophimfromsmoking 2 我的父母阻止我在河里游泳 Myparentspreventmefromswimmingintheriver 4 canbesaved 此为含有情态动词的被动语态其结构为 情态动词 be P P can may must 可以被贮存 e g 教室必须每天 被 打扫 Theclassroommustbecleanedeveryday 5 althoughconj 虽然 尽管它可以引导让步状语从句 相当于though 但是不能同时使用but eventhough但不能说evenalthough 错 e g 1 尽管这个问题很难 他仍然能够回答它 Althoughthequestionisdifficult hecanstillanswerit 2 虽然他很累 但他还继续工作 heisverytired hegoesonwithhiswork A Although butB Although C Although andD Although and B Waterisveryimportanttohumanbeings butnoteverybodyknowshowtoprotectandsaveit Whatwaysdoyouhavetoprotectandsavewater ProtectingandSavingwater Project4 Discussingroups thensaythemout Herearesomeways 1 Passlawsagainstwaterpollution 2 Stopfactoriespouringwastewaterintorivers 3 Usechemicalsproperly 4 Remembertoturnthetapoffwhenyouleave 5 Collectandreusewastewater Usetheusedwatertowaterplants washthefloorandsoon 2 Groupwork ProtectingandSavingWater Herearesomeways 1 Passlawsagainstwaterpollution 2 Stopfactoriespouringwastewaterintorivers 3 Usechemicalsproperly 4 Remembertoturnthetapoffwhenyouleave 5 Collectandreusewastewater Usetheusedwatertowaterplants washtheroomsandsoon 2 Groupwork ProtectingandSavingWater remember forgettodosth 记得 忘记要做某事 某事还没有做 remember forgetdoingsth 记得 忘记曾做过某事 某事已做了 e g 我忘了锁过门了 Iforgotlockingthedoor 出去前别忘了锁门 Don tforgettolockthedoor 门还没有锁 门已经锁了 turnonturnoffturnupturndown 打开 关掉 调大声 调高音量 调小声 调低音量 e g 请开灯 Pleaseturnonthelight 水 电 电视 收音机等 Homework A 完成下列句子 1 虽然他只有五岁 但他懂得很多东西 heisonlyfiveyearsold heknowsalot 2 森林有利于防止水土流失 Forestshelptopreventthewater theearth 3 大量良田变成荒漠 遍地是沙子 Alotofrichlandhas desert leavingonlysand 4 在课堂上大声说话是不礼貌的 inclassimpolite 5 我今天忘了带作业给王老师 IforgetmyhomeworktomissWangtoday 4 5两题选作 1 cutdown砍倒2 changesth intosth 把 变成 3 stopsb sth from doingsth preventsb sth from doingsth 阻止某人 某物做某事4 although虽然 尽管 让步状语从句 5 remember forgettodosth 记得 忘记要做某事 某事还没有做 remember forgetdoingsth 记得