1、届九年级英语下册教案Unit13 Weretryingtosavetheearth语文Unit 13Were trying to save the earth! 第一课时Section A (1a2d)类别课时要点重点单词1.litter v乱扔;n.垃圾2.ugly adj.丑陋的3.advantage n优点4cost v花费 5.wooden adj.木制的 6.bottom n底部7fisherman n渔民 8.coal n煤 9.plastic adj.塑料的10takeaway n外卖食物 11.bin n垃圾箱重点词组1.at the bottom of the river在河
2、床底部2be full of the rubbish充满了垃圾 3throw litter into the river把垃圾扔入河中 4play a part in cleaning it up尽一份力把它清理干净5land pollution土地污染 6fill the air with black smoke使空气中充满了黑烟 7cut down air pollution减少空气污染 8make a difference产生影响 重点句式1.Everyone in town should play a part in cleaning it up.城里的每个人都应当尽一份力把它清理干净
3、。2The air is badly polluted because there are too many cars on the road these days.空气被严重污染因为如今路上的汽车太多了。3To cut down air pollution,we should take the bus or subway instead of driving.为了减少空气污染,我们应当乘坐公汽或地铁而不是开车。4Our actions can make a difference and lead to a better future .我们的行动能产生影响,创造一个更好的未来。5I used
4、 to be able to see stars in the sky.我过去能在天空中看到星星。6The air has become really polluted around here.Im getting very worried.这儿的空气真的已经被污染了,我非常担心。自主学习案根据汉语提示完成单词。1We should put up notice to stop from littering_(乱扔)2The teacher asked us to find a way to pick up the coins at the bottom (底部)of the bottle.3T
5、here are no more fish for fishermen (渔夫)to catch in the river.4We should take the paper bags to go shopping instead of the plastic (塑料)ones.5Could you please tell us another advantage (优点)of riding bike to work?课堂导学案Step 1准备与热身(Preparation)用多媒体给学生播放一些有关环境污染的图片或视频,然后询问学生对环境污染的看法和观点。Teacher:What kinds
6、 of pollutions do you know?What do you feel about the pollution?Students:I think there are_ .noise pollution; air pollution;water pollutionStep 2呈现与输入(Presentation)1要求学生翻开课本P97,迅速阅读1a部分的内容。把方框中的单词按它们产生污染的类型写入相应的栏目中,并添加更多的单词。(1分钟)2检查答案,先要求全班一起给出答案并检查讨论。然后要求23名同学给出自己的答案,并把收集的答案列举在黑板上。(3分钟)3要求学生听第一遍录音,
7、并根据听到的内容完成课本上1b表格中的句子。然后要求23名同学读出序号读出所填单词读出完整的句子(2分钟)(1)polluted,rubbish,fish(2)litter,rubbish (3)newspaper,stop,clean4要求学生听第二遍录音,并逐句进行跟读。(2分钟)5完成教材1c的任务,要求学生模仿1a内容,编造自己的关于污染的对话并进行对话练习。并邀请23对同学当堂进行演示。(3分钟)6小结训练。要求学生在规定的时间内完成一个小练习。并请若干学生给出自己的答案。有错误的话及时解决纠正。(2分钟)用所给词的适当形式填空。1There are many kinds of _p
8、ollution_ (pollute)in our daily life.2All of the students should take part in _keeping_(keep)our school clean and tidy.3Can you tell us your ideas for _improving_ (improve)your spoken English.4We should stop using the _wooden_ (wood)chopsticks to protect the forest.5Their grandparents were _fisherme
9、n_ (fisherman)near the sea before they moved to the town.环节说明:通过学习1a,使学生对过去完成时态有所了解,并拓宽了思路;通过1b,锻炼学生的听力及抓取关键信息的能力;通过1c的训练锻炼学生的口头表达能力,同时巩固对本课内容的认识。 Step 3练习与体验(Practice)1要求学生翻开课本P98。播放录音一遍,完成2a,2b的听力任务,然后个别检查,统一核对答案。(2分钟)2要求学生听第二遍录音,并逐句进行跟读。(2分钟)3听力内容巩固训练。要求学生根据所听到的内容完成下列各句。完成后要求若干学生给出自己的答案。以巩固对听力内容的
10、了解。(4分钟)1)The air is badly polluted because there are too much cars on the road these days.2)Factories that burn coal also filled the air with a lot of black smoke.3)There is also too much rubbish and waste.People litter things every day.4)People are also littering in public like parks,this is turni
11、ng beautiful places into ugly ones. Step 4运用与生成(Production)1大声朗读听力材料。(1分钟)2放下听力材料,要求学生模仿听力内容,利用2a,2b的信息分角色练习Jason与 Susan的对话。然后邀请23对同学当堂演示。看哪一对的表现最佳。(5分钟)3播放2d的对话录音,让学生跟读,模仿并理解大意。然后让学生分角色朗读并表演2d的对话。(5分钟)将听、说、读、写的任务结合起来不仅锻炼了学生的语言综合运用能力,还巩固了学生对目标语言的学习、识记和运用;同时,小组合作对话训练了同学们的合作意识和团队精神;对话的当堂演示使同学们有了学英语的成就
12、感,张扬了个性。Step 5巩固与提高(Progress)探究点一Were trying to save the earth!我们正在设法拯救地球。【点拨】1.try为动词,意为“试图,尝试”,try后可接动词不定式或动名词作宾语,但意义不一样。(1)try to do sth设法做某事。eg.Ill try to improve my English.我要设法提高我的英语成绩。He tried to solve the problem.他试图解决这个问题。(2)try doing sth试着做某事。eg.Lets try doing things together.让我们试着一起做事吧。Th
13、e next time you feel stressed or tired,try doing an exercise you enjoy.在下次感到有压力或疲劳的时候,试试做一项你喜欢的运动吧。(3)try还可作名词,意为“尝试”,常用短语为have a try试一试。eg.I have three good methods.I will have a try.我有三种不错的方法,我将会试一下。(4)try构成的其他常见短语有:try on试穿eg.May I try on the hat?我能试戴这顶帽子吗?try out试验eg.We have tried out the method
14、 many times.这个方法我们已经试过很多次了。try ones best to do sth尽某人最大努力做某事。eg.You should try your best to achieve your dreams.你们应该尽力去实现你们的梦想。2save的用法。(1)v救,挽救save ones life挽救某人的生命。(2)v储蓄,贮存save money存钱。(3)v节省save water节约用水。针对训练 ( B )1.We are trying _ best to make the environment more and more beautiful.AweBourCus
15、Dours探究点二Its good for health and it doesnt cost anything.它对健康有好处,而且也不花钱。【点拨】cost在句中用作动词,表示“花费”,其主语是物或某种活动,cost还可用作名词,表示“成本,费用”等。常见用法如下:(1)sth cost(s)sb(可省略)金钱某物花了(某人)多少钱。eg.A new computer costs a lot of money.买一台新电脑要花很多钱。(2)the cost of 的费用、成本。eg.This is the total cost of the holiday.这是这个假期的总费用。注意:co
16、st的过去式及过去分词都是cost,没有被动语态。归纳表示花费的其他几种方式如下:(1)spend其主语是人,常用结构为:spendstheg.I spent two hours on this math problem.这道数学题花了我两个小时。They spent two years (in) building the bridge.他们花了两年时间造这座桥。(2)take常用结构为It takes sb时间to do sth做某事花了某人多少时间。亦可用doing sth takes sb时间。eg.It took them three months to build the road.
17、修这条路花了他们三个月的时间。Repairing the car took him the whole afternoon.他花了一下午的时间修车。(3)pay的主语是人,常用结构为payfor。eg.I have to pay them 20 pounds for the room each month.我每个月要付20英镑的房租。针对训练 ( A )2.They spend too much time _ the report.Awriting Bto write Con write Dwrite( B )3.Will you please _ for my dinner,Peter?Su
18、re.Aspend Bpay Ccost Dtake( D )4.The science book _ me a great amount of money.Atook Bspent Cused Dcost( A )5.It will _ me too much time to read the book.Atake Bcost Cspend Dpay教学反思:本课教学中,通过多媒体给学生播放有关环境污染的图片或视频,依据图象内容进行师生问答互动引入新课。学习1a,使学生对各种类型的污染有所了解,并掌握一些描述污染的词汇;通过1b,锻炼学生的听力及抓取关键信息的通力;通过1c的训练锻炼学生的口
19、头表达能力,同时巩固对本课内容的认识。在2a2d教学中,将听、说、读、写的任务结合起来不仅锻炼了学生的语言综合运用能力,还巩固了学生对目标语言的学习、识记和运用。教学方法的改进:课堂教学中师生互动在进行英语口语操练时,必须强化本课的语法重点,创设真实的英语语言情景,营造英语氛围,引导全体学生积极参与,实现英语交际的目的。第二课时Section A (3a3b)类别课时要点重点单词1.shark n鲨鱼2.fin n鱼 鳍3method n方法 4.cruel adj.残酷的5harmful adj.有害的 6.chain n链条7ecosystem n生态系统 8.industry n工业;行
20、业9law n法律 10.scientific adj.科学的;科学上的重点词组1.shark fin soup鱼翅(汤)2cut off the fins 割掉鱼鳍3. be harmful to the environment 对环境有害4at the top of the food chain 处于食物链的顶端5in the last 20 to 30 years在最近的20到30年间6fall by over 90 percent下降了90%多7environmental protection groups around the world全球环境保护组织8develop laws 健
21、全法律9the sale of shark fins 鱼鳍买卖重点句式1.But do you realize that youre killing a whole shark each time you enjoy a bowl of shark fin soup.你意识到了吗,当你每次在品尝一碗鱼鳍汤时,你正在杀死一整头鲨鱼。2This method is not only cruel,but also harmful to the environment.这种方法不仅残酷,而且对环境有害。3The numbers of some kinds of sharks have fallen b
22、y over 90 percent in the last 20 to 30 years.在最近的20年到30年的时间里,这种鲨鱼已经下降了90%。4So far,no scientific studies have shown that shark fins are good for health.到目前为止,还没有科学研究证明鱼鳍对人们的健康有好处。5Sharks may disappear one day if we do not something to stop the sale of shark fins.如果我们不采取措施来阻止这种鱼鳍买卖,鲨鱼可能有一天会消失。自主学习案根据汉
23、语提示完成单词。1Carl is planning to travel by ship because he wants to see the sharks (鲨鱼)in the sea.2You should teach them the method (方法)of how to grow apples instead of giving them apples.3Its harmful (有害的)to throw the old battery in the water.4Many countries have made laws (法律)to keep the animals.5If t
24、he animals are endangered ,it may broke the ecosystem (生态系统)of the world.课堂导学案Step 1准备与热身(Preparation)用多媒体播放一段鲨鱼的视频,以及姚明的“没有买卖就没有杀戮”的公益广告。然后询问学生。Do you like animals?How do you help protect the endangered animals?(4分钟)通过上述图片或影片的介绍,使学生对这两个短文有了一定的了解,从而达到导入新课的目的。引起学习短文的兴趣。Step 2呈现与输入(Presesntation)1要求学生
25、快速默读短文,熟知大意,并完成课本3a的任务。然后邀请几位同学给出自己的答案,全班一起检查讨论。(3分钟)(1)In southern China.(2)Around 70 million sharks(3)Over 90 percent(4)They are WildAid and the WWF.Step 3练习与体验(Practice)1先邀请几位同学朗读短文,教师要注意语音,及时纠正。然后播放录音,全班同学一起跟读。(3分钟)2短文内容巩固练习。让学生用自己的话复述根短文内容。(4分钟)Step 4运用与生成(Production)4完成教材3b的任务,要求学生再次阅读短文,用3b的方
26、框中所给单词完成句子。(5分钟)1when2.so3.but4.Although5.if将听、说、读、写的任务结合起来不仅锻炼了学生的语言综合运用能力,还巩固了学生对目标语言的学习、识记和运用。Step 5巩固与提高(Progress)探究点The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.【点拨】1.the number of 表示的数量,中心词为the number,名词(短语)作定语修饰number,因此谓语动词用单数。eg.The number of
27、 the students in our school has grown from 1000 to more than 1500.我们学校学生的数量从1000名逐步增加到1500多名。【拓展】a number of意为“大量的”中心词是这个短语所修饰的复数名词,因此,其作主语时谓语动词应用复数形式。number前可用large,small,great等修饰。eg.A large number of wild animals have been found in the forest.在森林里发现了许多野生动物。【点拨】2.句中last是形容词,意为“最近的,刚过去的,最后的”,在句中常用作定
28、语,修饰名词。“in the last/past一段时间”,表示在最近的,过去的多用于现在完成时句中。eg.I thought her last book was one of her best.我认为她最近出版的那本书是她的最佳著作之一。In the last three months theyve had two major concerts.在最近的三个月里,他们已经举办了2场重要的音乐会。【拓展】last也可作动词,意为“持续”,是不及物动词,后面一般不带宾语,亦无被动结构。eg.The hot weather lasted until September.炎热的天气持续到九月。针对训
29、练 ( C )1.English is spoken by _ people.Aa lotBmuch manyCa large number ofDthe number of( B )2.How many students are there in your class?_ the students in our class _ over 60.AThe number of;are BThe number of;isCA number of;are DA number of;is3My uncle has _given_ (give) me much money in the last few
30、 years.4Dont forget to lock the door _if_you_are_the_last_person_to_leave_ (如果你是最后一个离开的人)5The meeting _lasted_three_hours_ (开了三个小时)教学反思:本课教学中,通过多媒体播放一段鲨鱼的视频,依据上述广告或影片的介绍,使学生对这篇短文有了一定的了解,从而达到导入新课的目的,引起学生的学习兴趣。在3a的教学中,将听、说、读、写的任务结合起来不仅锻炼了学生的语言综合运用能力,还巩固了学生对目标语言的学习、识记和运用。教学方法的改进:在任务型教学中,小组互动,小组操练时,老师一定要注意学生的发音,及时予以更正,强化知识的重难点,将听、说、读、写更好地结合起来。第三课时Section A (Grammar Focus4c)类别课时要点重点单词1.afford v承担得起2.recycle v回收利用3reusable adj.可重复使用的 4.transportation n运输业重点词组1.take part in 参加
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