《Earth first》SectionC PPT第一部分内容：课前篇自主预习Ⅰ.知识体系图解重点单词1._________ n.设备,仪器,装置2._________ n.(机器、设备的)运行方式,状态,模式3._________ n.电4._________ v.(使)漏,(使)渗漏5._________ v.移走,搬走,去掉6._________ n.(电)插头7._________ n.(宣传)活动8._________ v.竭力主张,强烈要求,敦促9._________ n.(工厂、学校)的餐厅10._________ adj.焦急的,担忧的11._________ v.促成,造成(某事发生)12._________ adj.平均(数)的13._________ n.多数,大多数(人或物)14._________ adj. 不正确的,错误的15._________ n.数量,数额重点短语1.turn off_________2.the majority of_________3.take steps_________4.mistake...for..._________5.break down_________6.stand-by mode _________7.common sense_________8.take...into account_________9.as...as possible_________10.take a shower_________11.call on_________重点句式However,making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water.写作 环保倡议书Ⅱ.释义匹配1.leak　　A.to strongly suggest that someone does something2.removeB.to escape from a hole or crack in a pipe or container3.urgeC.involved in something or affected by it4.concerned D.a particular way or style of behaving,living or doing something5.modeE.to take something away from,out of,or off the place where it is答案:1.B　2.E　3.A　4.C　5.DⅢ.介词填空1.He spoke for one and a half hours and barely paused_______breath.2.He preceded his speech_______welcome to the guests.3.You can borrow my camera if you promise to take care_______it.4.I didn’t recognize her voice and mistook her_______Jenny.5.The dam broke_______and as a result the land was flooded.... ... ...Earth first PPT，第二部分内容：课堂篇学习理解重点词汇1.majority n.多数,大多数【课文原句】Most of us are aware that we must take care of the environment,and the majority of us take steps to save energy and reduce waste and pollution.我们大多数人都意识到,我们必须爱护环境,大多数人都采取措施节约能源,减少浪费和污染。【词汇精讲】majority是名词,意为“多数,大多数”。The majority of them take an online language test before starting their programme.他们中的大多数在开始这个课程前参加网上语言测试。Only a minority of people in that city do not have a car while the people taking subway to work are in the/a majority.在那个城市只有少数人没有汽车,但是乘坐地铁上班的人却占了大多数。I think that is one of the major factors in his success.我认为那是他成功的主要因素之一。I’ve made up my mind to major in English after I finish middle school.我决定中学毕业后主修英语。My best friend,Tom,is a physics major.我最好的朋友——汤姆——学的是物理专业。【温馨提示】“the majority of+复数名词”用作主语时,谓语动词常用复数;“the majority of+不可数名词”用作主语时,谓语动词用单数;“a majority of+复数名词”用作主语时,谓语动词通常用复数。2.amount n.数量,数额【课文原句】However,making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water.然而,制造一个纸袋所需的能量是制造一个塑料袋的四倍,所需的水是制造一个塑料袋的三倍。【词汇精讲】amount是名词,意为“数量,数额,金额”。The insurance company will return any amount due to you.保险公司将退还你应得的所有款项。He needs that amount of money to survive.他需要那样一笔钱以生存下去。【温馨提示】 “a huge amount of+不可数名词”作主语时,谓语动词用单数;“huge amounts of+不可数名词”作主语时,谓语动词用复数。A huge amount of money was spent on the new bridge last year.=Huge amounts of money were spent on the new bridge last year.去年建这座新桥花了很多钱。3.remove v.移走,搬走,去掉【课文原句】To make sure your appliance is in fact off,remove the plug from its power supply.为了确保你的电器实际上是关闭的,把插头从电源上拔下来。【词汇精讲】remove是及物动词,意为“移走,搬走,去掉”。The antelope population has recovered and in June 2015,the Tibetan antelope was removed from the endangered species list.藏羚羊的数量已经恢复,2015年6月,藏羚羊从濒危物种名单中除名。Reference books may not be removed from the library.参考书不能被带出图书馆。She removed her jacket and hung it up on the hook.她脱掉外套挂在衣钩上。重点句式However,making a paper bag uses four times as much energy as making a plastic bag and up to three times the amount of water.然而,制造一个纸袋所需的能量是制造一个塑料袋的四倍,所需的水是制造一个塑料袋的三倍。【句式剖析】four times as much energy as...是“倍数+as+原级+as”结构,是英语倍数的一种表示方法。He has collected more than three times as many stamps as I.他搜集的邮票是我的三倍多。There are five times as many books in our library as in yours.我们图书馆里的书是你们图书馆里的五倍。【句式拓展】(1)“倍数+比较级+than”The hall is five times bigger than our classroom.这个大厅的面积比我们教室大五倍。(2)“倍数+the size/length+of+其他”The earth is 49 times the size of the moon.地球的体积是月球的四十九倍。The newly broadened square is four times the size of the previous one.新扩建的广场是未扩建时的四倍大。(3)“倍数+what从句”The production is now three times what it was ten years ago.现在的产量是十年前的三倍。The length of the road is four times what it was three years ago.这条路的长度是三年前的四倍。(4)“计量名词+of+名词+be+倍数+that+of”The size of the sun is a million times over that of the earth.太阳的体积比地球的体积大一百万倍。The depth of this river is three times that of Wenhe River.这条河的深度是汶河的三倍。高分写作国庆长假期间,各地景区垃圾剧增,给保洁人员带来巨大负担,也暴露出游人环保意识薄弱。假如你是长城景区的一位导游,请写一篇倡议书,倡导游客摒弃不文明行为,杜绝垃圾乱扔现象。注意:1.词数80左右;2.开头和结尾已给出,不计入总词数;3.可根据内容需要适当增加细节。一、审题定调1.确定体裁:本次写作是一封倡议书,倡导游客摒弃不文明行为,杜绝垃圾乱扔现象。2.确定人称:主要人称为第一、三人称。3.确定时态:主要时态用一般现在时。二、谋篇布局本文可以分为三个段落。第一段: 提出问题,分析问题的原因及其后果;第二部分: 倡导游客摒弃不文明行为,杜绝垃圾乱扔现象;第三部分: 对全文做出总结。随堂练习Ⅰ.短语填空call on,depend on,break down,take steps,turn off1.We_____ the newspapers for information about what is happening.答案:depend on2.I__________ everyone to do something to make a difference to the environment.答案:call on3.We must__________to prevent this tragedy from happening again.答案:take steps4.We were driving on the highway when the car__________.答案:broke down5.Remember to__________the light before you leaving the room.答案:turn offⅡ.语篇填空1.__________(found) by Senator Gaylord Nelson,an American politician and environmentalist,Earth Day was originally aimed at helping the public to know the current situation of air and water pollution and 2.__________(get) people to care about the earth.In 1962,Rachel Carson’s bestselling book “Silent Spring” created an 3.__________(aware) of the dangerous effects of pesticides(农药).Then,a fire,4.__________broke out in 1969 on Cleveland’s Guyahoga River,shed light on the problem of chemical pollution in water.Senator Gaylord Nelson dreamed of 5.__________similar large event that would get people to take environmental issues 6.__________(serious).In 1969,he came up with the idea for Earth Day.Since 1970,Earth Day celebrations have grown.Today,Earth Day is celebrated around the world every April 22.关键词：外研版高中英语必修二PPT课件免费下载，Earth first PPT下载，.PPT格式； 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