山东省英语高中人教版学案 必修四：Unit 2 Woking the land 知识点(学生版)

教学内容

Learning aims:

知识与能力：to master some sentence patterns of the text and know the differences between chemical farming and organic farming

过程与方法：Further understand the passage

情感态度价值观：to enjoy the pleasure of study

Learning key points: to know something about chemical farming and organic farming

Learning difficult points: to know something about chemical farming and organic farming

【学案使用说明】1）熟读单词，为课文阅读做好准备。2）25分钟阅读课文，了解大意并完成练习题（自主学习及合作探究的题目）学习指导即时感悟

【课前预习】

Task1.1)冲洗掉2）集中（注意力、精力）于

3）每隔几年4）对…造成伤害

5）逐步增强，建立6）导致;造成(后果);通往

7）另外，而且8）转向

9）使—免受影响、伤害等10）减少疾病

11）化肥12）阻止土壤流失

13）增加产量14）富含营养

15）进入农作物内部16)有用的细菌和害虫

17）有机农作物18）避免做某事

Task2：

1.regret（vt./n.遗憾.惋惜（adj. 后悔的.遗憾（adv. 后悔地）

2. chemical（adj.化学的n.化学药品）（n.化学家、药剂师）（n.化学）

3. production（n.生产、制造（v.生产、制造（n.产品、产物）

4.nutrition（n.营养）- （adj.有营养的）

5..summary（n.总结、摘要）（vt.总结、概括）

6. discovery(n.发现、发觉)- （vt. 发现）

【自主合作探究】

ⅠTask1 :（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 questions:

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 My questi ons in this class _____ _

_____ __

farming?

_____________________________________________________

ⅡTask2

1. focus vt.&vi. 集中(注意力)；聚焦n. 焦点；中心点focus on集中于

1). Focus your camera. 把照相机的焦距调准。

2).Her beauty makes her the focus of attention. _____________________________

(短语)___________________________________集中(注意力/心思/精力)于3). All eyes _______ _______ (集中于) her.

2. build up 逐渐建立；逐渐增强体质；积累；开发

1). You need more protein to build you up. 你需要增加蛋白质以增强体质。

2). He is now trying to __________________他正在努力逐步赢得好的声誉。【当堂达标】

In the past, farmers welcomed __________ fertilizers to stop crop 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 people’s bodies over time and can _____ _____ cancer or other illnesses. 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 goal: to grow good food and avoid _________ the environment or people’s health.

【总结提升】

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 _______ (矿物的) resources.

4. New scientific d_________ are being made every day.

5. The group produces a monthly ________ (摘要) of their research.

6. We must______ our expenses to 300 yuan a month.

【拓展延伸】

做《优化》P32