九年级英语下册教案Unit 13 Were trying to save the earth.docx

1、九年级英语下册教案Unit 13 Were trying to save the earthUnit 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 rive

2、r在河床底部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

3、理干净。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 u

4、sed 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

5、.3There 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 ki

6、nds 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

7、录音，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

8、 _pollution_ (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 _fishe

9、rmen_ (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

10、内容的了解。(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 tu

11、rning 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

12、的成就感，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

13、。The 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 met

14、hod 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.AweBour

15、CusDours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：cost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