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1、新外研社(19)高中英语必修二Unit6 Earth first-Starting out&key words 教案Teaching objectives:1. Enable students to master the words and expressions about the topic.2. Lead students to be familiar with the topic and stimulate their known background knowledge and interests in the topic.3. Guide students to take adva
2、ntage of divergent thinking and be able to describe what cartoons show and express their ideas in English.4. Raise students awareness of protecting the earth.Evaluation objectives:1. Ask students to talk about the cartoons to find out whether students can get to know the environmental problems the e
3、arth is facing.2. Ask students to describe the causes of environmental problems and how to deal with them to find out whether students can think divergently.3. Ask students to do some exercises related to key words to find out whether they have mastered them.Teaching key points:1. Enable students to
4、 understand the environmental problems the earth is facing.2. Lead students to express their own opinions about the causes of environmental problems and how to deal with them.3. Lead students to know the meanings of key words in the language context.Teaching difficult points:1. Students can express
5、their own opinions about the causes of environmental problems and how to deal with them.2. Students can use the words in the context properly.Teaching methods:Cooperative Teaching Method, Task-based Approach, Communicative ApproachTeaching procedures:Stepl: Lead-inT:Hello! Boys and girls.As we all k
6、now, nowadays, the environment is facing many challenges. Can you make a list of some environmental problems?S:Smog, white pollution.T:You did a good job.Now, Id like you to look at some cartoons about environmental problem.Look at the cartoons on Page 61 and answer the following questions.1 .What e
7、nvironmental problem does each cartoon refer to?2 .What are the causes of these problems?3 .What do you think is the most serious environmental problem we face today?What should be done to help solve it?Suggested answers:l.water pollution;deforestation;air pollution;global warming4 .Students own ans
8、wersT:Now, lets conclude the causes you just now mentioned.Just take notes of the key expressions: (1) cut down trees (2) ignore the environment (3) only seek to make more and more money (4) throw away rubbish at will.5 .Students own answersT:Maybe, the following expressions can help you express you
9、r ideas: (1) raise people/s awareness of environmental protection ( 2 ) recycle rubbish ( 3 ) classification of the waste (4) low-carbon lifeStep 2:Exchange ideas with each other in groupsStep 3:BrainstormPlease make a list of the words related to environmental problems and solutions to them.TJust n
10、ow, we have been talking about environmental problems and we have learnt some expressions about them.Now, please think over and mention more about environmental problems and solutions to them.T:Nowz lets summarize what you have mentioned.Suggested answers:(1) global warming (2) climate change (3) ov
11、erpopulation (4) waste disposal (5) loss of biodiversity (6) take effective measures to do (7) pass laws(8) put a ban on (9) attach importance toStep4:Remember the following wordsA.Match the words with meanings(l)shark忱使(某人)惊恐，吓唬(2)scare，.鲨(鱼)(3)dive。.灭绝，绝种(4)target (4)区致力(S)extinction(5)。残酷;残暴highl
12、ight以通常指使用呼吸设备的)潜水(7)cruelty 帆把作为目标(8)hunting上建立(9)damage (9)。,干旱，旱灾(lO)affect (10似使恢复(ll)adopt (11)帆(使)漏,(使)渗漏(12)reusable(12)也使.突出，使注意力集中于(13)release (13)必搬走，移走，去掉(14)campaign(14)u.竭力主张，强烈要求，敦促(15)fog(15)岫.可再度使用的，可多次使用的(16)infection(16)时,焦急的;担忧的(17)sustainable (17)也促成，造成(某事发生)(18)contribute (18)u.
13、破损;损害(19)reserve(19)，.雾(20)fin(20)也切去(鱼的)鳍。鱼鳍(21)drought (21)必影响(22)restore (22)/?.值传)活动(23)leak (23)帆释放，排放(24)remove (24)/?.感染,传染病(25)devote (25)M/.可持续的,不破坏环境的(26)concerned (26)r).(野生生物)保护区(27)urge(27)帆采取(某种方法)(28)establish(28)/7.打猎;狩猎B.根据释义写出单词1. A feeling or an opinion about something or someone2
14、. A situation in which a particular type of animals or plants dies out3. A sudden feeling of fear or worry4. Because of;as a result of5. Jump into water or swim underwater6. A large fish that has sharp teeth and a fin on its back7. By good luck8. An aim or a goal that you are trying to achieve9. Set
15、 up;found10. Worried;anxious11. Move;get rid of12. Try to persuade sb.to do sth.13. Allow (a person or an animal) to go;set free14. Have an effect onSuggested answers:A.略14.1. ttitude 2.extinction 3.scare 4.due to 5.dive 6.shark 7.fortunately 8.target 9.establish 10.concerned 11.remove 12.urge 13.re
16、lease 14.affectStep 5:Learn the key wordsl.scare忱使(某人)惊恐，吓唬【词形变化】ad/.scary可怕的;骇人的scared恐惧的【短语搭配】scare sb.away/off 把吓跑 scare sb.into doing sth.恐吓、威胁某人做某事【即学即练】(l)You cant scare me telling you anything.(2)Jeff had hunted in Iowa before Thanksgiving with his dog,Rosie,but the gun shots had scared the d
17、og .2 .target也把.作为目标【一词多义】。目标;对象【短语搭配】target sth.on/at sb./sth.把某物瞄准某人/某物be targeted at 目标是;面向 a target for.的目标【即学即练】(l)Who were the newspapers of the new trend targeted ?我所说的话并非针对你。3 .devote u.致力，献身【词形变化】n.devotion献身;热爱【短语搭配】devote ones time/energy/attention to sth.把某人的时间、精力、注意力用于 某事devote oneself
18、to sth.致力于某事be devoted to (doing) sth.致力于(做)某事【即学即练】(l)Neighbours devoted their spare time to (help) others rebuild.(2)HoweverJnstead of (致于)their work,they find themselves working to support the lifestyle to which they have so quickly become accustomed.4 .reduce区减少【词形变化】.reduction减少【短语搭配】reduce sth
19、.by 把某物减少了（幅度）reduce sth.from.to.把某物从.减少 到【即学即练】（l）The number of cities producing CO beyond the standard （从 40 减 少到9）.（2）Consumption （减少 了 25%）,compared to that last year.5 .account。账户;账单【一词多义】也认为是;视为【短语搭配】take.into account 把考虑在内account for是.的原因;解释;说明;占（一定数量或比例）on account of由于;因为on no account绝不;绝对不【
20、即学即练】（1） When you are making a plan,you should （把天气考虑在内）.（2）The professor warned the students that （绝不）should they use mobile phones in his class.（3）lt is said that body language （占）55% of a first impression while what you say just 7%.6 .urge忱强烈要求;敦促【一词多义】。.冲动【短语搭配】urge sb.to do sth.力劝/敦促某人做某事urge s
21、b.into/towards.驱赶某人，把某人赶进.【即学即练】（1）1 never felt （冲动）to learn any sign language before.很多学生被敦促努力学习。7 .concerned。功.焦急的;担忧的【词形变化】u./mconcern担忧;关心【短语搭配】be concerned about.对担，心 be concerned with.与有关;涉及 as faras sb.be concerned 就.而言;在.看来【即学即练】(l)Others (担心)using gardening methods that require less water a
22、nd fewer fertilizers(肥料).(2)你的文章需与环境保护有关。8 .contribute u.促成;造成【词形变化】n.contribution贡献;捐款【短语搭配】contribute.to/towards.n.捐献contribute to.导致/造成某事发生make a contribution to.对做出贡献【即学即练】(l)We are not saying that everyone needs to contribute their lives the poor.人们的行为导致了环境污染。Suggested answers:1 .(l)into (2)awa
23、y/off2 .(l)on/at (2)What I said didnt target you.3 .(l)helping (2)devoting themselves to4 .(l)is reduced from 40 to 9 (2)is reduced by 25%5 .(l)take weather into account (2)on no account (3)accounts for6 .(l)the urge (2)Many students are urged to study hard.7 .(l)are concerned about (2)Your essay sh
24、ould be concerned withenvironmental protection.8 .(l)to/towards (2)People,s behaviors contribute to environmental pollution.Step 6:Reflection on what students have learned in this classPlease write a short paragraph about “How to deal with air pollution“ according to what you have learnt in this class.(About 50-80 words)Homework:Polish the paragraph.Teammates work together to correct the mistakes in the use of words and grammar.