1、山東省泰安市肥城市第三中學(xué)高中英語 Unit 2 Woking the land usinglanguage教學(xué)案 新人教版必修4教學(xué)內(nèi)容Learning aims: 知識(shí)與能力：to master some sentence patterns of the text and know the differences between chemical farming and organic farming過程與方法：Further understand the passage 情感態(tài)度價(jià)值觀：to enjoy the pleasure of study Learning key points:

2、 to know something about chemical farming and organic farmingLearning difficult points: to know something about chemical farming and organic farming【學(xué)案使用說明】1）熟讀單詞，為課文閱讀做好準(zhǔn)備。2）25分鐘閱讀課文，了解大意并完成練習(xí)題（自主學(xué)習(xí)及合作探究的題目）學(xué)習(xí)指導(dǎo)即時(shí)感 悟【課前預(yù)習(xí)】 Task1.1)沖洗掉 2）集中（注意力、精力）于 3）每隔幾年 4）對(duì)造成傷害 5）逐步增強(qiáng)，建立 6）導(dǎo)致;造成(后果);通往 7）另外，而且 8）

3、轉(zhuǎn)向 9）使免受影響、傷害等 10）減少疾病 11）化肥 12）阻止土壤流失 13）增加產(chǎn)量 14）富含營養(yǎng) 15）進(jìn)入農(nóng)作物內(nèi)部 16)有用的細(xì)菌和害蟲 17）有機(jī)農(nóng)作物 18）避免做某事 Task2：1.regret（vt./n.遺憾.惋惜 （adj. 后悔的.遺憾 （adv. 后悔地）2. chemical（adj.化學(xué)的n.化學(xué)藥品） （n.化學(xué)家、藥劑師） （n.化學(xué)）3. production（n.生產(chǎn)、制造 （v.生產(chǎn)、制造 （n.產(chǎn)品、產(chǎn)物）4.nutrition（n.營養(yǎng)）- （adj.有營養(yǎng)的）5.summary（n.總結(jié)、摘要） （vt.總結(jié)、概括）6. discover

4、y(n.發(fā)現(xiàn)、發(fā)覺)- （vt. 發(fā)現(xiàn)）【自主 合作 探究】Task1 : （一）Match the main idea of each paragraph.para1: Several problems caused by using chemical fertilizers.para2: Some methods to keep the soil fertile.para3: A new discovery of scientists. para4: The advantages of using organic farming.（二）Answer the following questi

5、ons:1. Why are chemical fertilizers so popular in farming today? _2. Read paragraph 2 and find out the problems caused by using chemical fertilizers._3. Read paragraph 3-4 and answer: What are the advantages of organic farming?_Task21. focus vt.&vi. 集中(注意力)；聚焦 n. c,u 焦點(diǎn)；中心點(diǎn)focus on集中于 1). Focus your

6、 camera. 把照相機(jī)的焦距調(diào)準(zhǔn)。2).Her beauty makes her the focus of attention. _(短語)_集中(注意力/心思/精力)于 3). All eyes _ _ (集中于) her.2. build up 逐漸建立；逐漸增強(qiáng)體質(zhì)；積累；開發(fā)1). You need more protein to build you up. 你需要增加蛋白質(zhì)以增強(qiáng)體質(zhì)。2). He is now trying to _他正在努力逐步贏得好的聲譽(yù)?！井?dāng)堂達(dá)標(biāo)】In the past, farmers welcomed _ fertilizers to stop cr

7、op disease and increase_. However,Recently, scientists have been finding that many _can be caused by them. First, they damage the land by killing the helpful _ and pests. These chemicals get inside the crops and cannot just be _ _, which _ _ in peoples bodies over time and can _ _ cancer or other il

8、lnesses. With these _, people are beginning to turn to _ farming, Which focus on keeping their soil rich and free of diseases and also _ the soil, water and crops_ _ chemicals. Organic farmers also use many other methods to keep the soil _. These many different organic farming methods have the same

9、goal: to grow good food and avoid _ the environment or peoples health.【總結(jié)提升】1. The new model will go into p_ next year.2. Because of his poor n_, he has grown weaker and weaker. 3. Those countries are rich in _ (礦物的) resources. 4. New scientific d_ are being made every day. 5. The group produces a m

10、onthly _ (摘要) of their research.6. We must_ our expenses to 300 yuan a month. 【拓展延伸】 做優(yōu)化P32答案：Task11wash off 2.focus on 3.every few years 4.cause damage to 5.build up 6.lead to7.in addition 8.turn to 9.keepfree from 10.reduce disease 11.chemical fertilizers 12.prevent wind or water from carrying awa

11、y the soil 13.increase production 14.be full of much nutrition 15.get inside the crops 16.helpful bacteria and pests 17.organic farming 18.avoid doingTask21. regretful regretfully 2.chemist chemistry 3.produce product 4.nutritious5.summarize 6.discover自主 合作 探究Ipara1 2Many farmers welcomed them as a

12、great way to stop crop disease and increase productionThere are three problems. First, they can damage as well as . They also stay in the and . In addition, grow too fast to The farmers focus on keeping their soil rich and free of disease and keeping the air , soil, water and crops free from chemicals.II她的美麗使她成為了焦點(diǎn)。focus ones attention on focused onbuild up good reputation當(dāng)堂達(dá)標(biāo)Chemical、