人教版（2019）选择性必修第一册Unit 5 Working the Land Section Ⅲ Using Language 学案 （含答案）

Unit 5 Section Ⅲ Using Language
【学习目标】
1.了解课文大意,培养略读和查读等阅读能力。(学习能力)
2.理解并能够自主运用重要语言点的用法。(语言能力)
3.通过阅读熟悉议论文的文体特征,并掌握其写作方法及策略。(语言能力,学习能力)
【合作探究】
语篇研读
Step 1　文本整体理解,关注布局谋篇
Fill in the blanks according to the passage on Pages 55-56.
Part 1(Paras.1-2) The 1.with chemical farming.
Part 2(Para.3) What organic farming is.
Part 3(Para.4) Organic 2.for producing rich soil.
Part 4(Para.5) 3.man-made chemicals are still used in farming.
答案　1.problems　2.methods　3.Why
Step 2　细读课文,明确教材细节
Read the passage on Pages 55-56 and choose the best answers.
1.Why did many farmers welcome the introduction of chemical pesticides and artificial fertilisers
A.They can fight crop disease and increase production.
B.They can protect the land.
C.They look beautiful on the outside.
D.They are not expensive.
2.What concerns many people about the use of pesticides
A.Pesticides can damage the land.
B.Chemicals can stay in the soil for a long time.
C.Pesticides can kill harmful bacteria and insects.
D.Chemicals may make people ill and even cause cancer.
3.Why do organic farmers change the kind of crop grown in each field every year
A.It helps put important minerals back into the ground.
B.It can avoid damage to the environment.
C.It can help protect the crops from harmful insects.
D.The author didn't tell us.
4.Why can't we stop the use of man-made chemicals in agriculture entirely
A.Organic farming cost us a lot of money.
B.Organic farming can meet people's need.
C.Chemical farming brought us huge profit.
D.Chemical farming helps serve the need for food.
答案　1~4　ADAD
新知探究
核 心 单 词
知识点1　alternative n.可供选择的事物 adj.可供替代的;非传统的 *alternatively adv. 或者
(P55)As an alternative, some farmers have switched to organic farming, and many customers have turned to organic food when they shop at the local grocery.
作为一种替代方法,一些农民已经转向有机耕作,而且许多消费者在当地杂货店购物时也转而选择有机食品。
知识拓展
have no alternative/choice but to do sth 别无选择,只好做某事
have the alternative of doing sth 有做某事的选择
There's no alternative/choice but to do sth. 别无选择,只好做某事。
an alternative to... ……的替代品
经典佳句
Failure is the mother of success. Sometimes, in order to succeed, we have no alternative but to face failure bravely and learn from it.
失败乃成功之母。有时候,为了成功,我们别无选择,只好勇敢地直面失败并从中吸取教训。
融会应用
　单句填空
(1)The girl had no alternative but 　　　　(accept) the offer.
(2)If you don't like the school lunch, you have the alternative of 　　　　(bring) your own.
(3)We could walk or 　　　　(alternative) we could go in Tim's car.
答案　 (1)to accept　(2)bringing　(3)alternatively
知识点2　depth n. 向下(或向里)的距离;深(度) *deepen v.(使)变深;加深
(P56)Organic farmers also plant diverse crops that use different depths of soil to help keep it rich.
有机耕作的农民还种植土壤深度要求不同的多样化的作物,来帮助保持土壤肥沃。
知识拓展
in depth 全面地;深入地
in the depths of 在……深处
at a depth of 30 metres 在30米的深处
a metre in depth 一米深
经典佳句
She belongs to herself. Nobody can measure the depth of her heart, deep as sea.
她属于她自己。没有人能测出她心底的深度,深似大海。
融会应用
　单句写作
(1)The platforms extend to 　　　　　　　　　　over 100 feet under the sea.
这些平台深达海底100多英尺。
(2)I haven't looked at the report 　　　　　　　　　　　　yet.
我还没仔细看这份报告。
(3)　　　　　　　　　　　　,many things I did with my father still live.
在我的记忆深处,我与父亲一起做过的很多事仍然历历在目。
答案　(1)a depth of　(2)in depth　(3)In the depths of my memory
短 语 句 式
知识点3　in turn相应地;转而;依次;轮流
(P55)This affects the crops grown on the land and,in turn,the animals and humans who digest them.
这会影响土里种植的作物,进而影响到消化这些作物的动物和人类。
知识拓展
in return (for)作为(对……的)回报
in one's turn 轮到某人;接着
by turns 轮流;依次
take turns doing/to do... 轮流做……
It's one's turn to do sth. 轮到某人做某事。
图解释义
People try to avoid public transportation delays by using their own cars, which in turn creates more problems.
人们通过使用私家车来避免公共交通延误,这反而造成更多的问题。
融会应用
　单句写作
(1)I bought him a drink 　　　　　　　　　　　.
我请他喝酒以感谢他的帮助。
(2)The shop assistants had to have their days off　　　　　　　　　　　　　　.
店员必须轮流休息。
(3)People are influenced by their environment and, 　　　　　　　　, influence their environment.
人们受他们所处的环境影响,反过来又影响他们所处的环境。
答案　(1)in return for his help　(2)by turns　(3)in turn
知识点4　动词-ing形式作结果状语
(P56)Why different crops are grown is because they put important minerals back into the ground, making it ready for the next batch of crops.
种植不同的作物是因为它们把重要的矿物质带回土壤,使其为下一批作物生长做好准备。
知识拓展
(1)动词-ing形式作结果状语,表示自然而然的、意料之中的结果;
(2)动词不定式作结果状语表示偶然的、意料之外的结果,且动词不定式前常有only修饰。
Nature has provided our country with wealthy natural treasures, making it a happy home for us.
大自然为我们的国家提供了丰富的自然宝藏,使之成为我们幸福的家园。
They hurried there only to find the meeting canceled.
他们匆匆忙忙赶到那儿,结果发现会议被取消了。
融会应用
　单句填空
(1)Many people from all over the world have moved to America, 　　　　(make) it the most multicultural country in the world.
(2)He hurried to the airport, only 　　　　(tell) that the plane had taken off.
答案　(1)making　(2)to be told
写作探究
议论文写作
　　本单元涉及议论文写作。议论文是一种剖析事物、论述事理、发表意见、提出主张的文体。论点、论据和论证是不可缺少的三个要素。学生可在所给材料和话题的基础上自由发挥,对所给材料进行论述和发表个人观点。
探究点1　教材范例提炼
Ⅰ.常用词汇
1.chemical adj.与化学有关的;化学的n.化学制品;化学品
2.flavour n.味道;特点;特色
3.nutritious adj.有营养的;营养丰富的
4.organic adj.有机的;不使用化肥的;有机物的
5.pesticide n.杀虫剂;除害药物
6.bacterium n.细菌
7.essential adj.完全必要的;极其重要的
8.mineral n.矿物;矿物质
9.alternative n.可供选择的事物adj.可供替代的;非传统的
10.without chemical fertilisers 不使用化肥
Ⅱ.话题句式
1.Have you ever dreamed of eating green vegetables without chemical fertilisers every day
你曾经梦想过每天吃不使用化肥的绿色蔬菜吗
2.With the development of agricultural technology, the proportion of organic farming in the market is increasing.
随着农业技术的发展,有机耕作在市场上的比例越来越高。
3.Organic agricultural products are becoming more and more popular with people.
有机农产品越来越受到人们的欢迎。
4.Here are my reasons. First of all, I think it would be better if...
我的理由如下。首先,我认为如果……会更好。
5.The reason for... is that...
……的原因是……
6.If I were you, I would...
如果我是你,我会……
7.No one can ignore the fact that...
没有人能忽视……这一事实。
探究点2　写作应用体验
写作典例
　　假定你是李华,最近你班开展了主题为“Chemical Agriculture or Organic Agriculture”的征文活动。请写一篇短文,内容如下:
1.你的选择;
2.做出该选择的理由。
注意:1.词数80左右;
2.可以适当增加细节,以使行文连贯。
分步推进
Step 1　审题谋篇
体裁 议论文
主题 农业
时态 一般现在时
人称 以第三人称为主
结构 第一段:介绍农业概况 第二段:分层次介绍化学农业和有机农业的区别 第三段:总结观点,提出建议
Step 2　要点翻译
1.词汇翻译
(1)营养;滋养 　　　　　　　
(2)各种各样的 　　　　　　　
(3)消费者　　　　　　　
(4)就……而言;在……方面　　　　　　　
(5)认为……有重要意义　　　　　　　
答案　(1)nutrition　(2)various　(3)customer
(4)in terms of　(5)attach great importance to
2.句子翻译
(1)就现代农业的发展而言,化学农业和有机农业是两个关键词。
In terms of the development of modern agriculture, 　　　　　　　　　　　　　　　　　　are two key phrases.
(2)人们对此持有不同的看法。
There are　　　　　　　　　　　　　　　　　about it.
(3)我们都知道化学农业生产出来的食物吃起来没有滋味。
We all know　　　　　　　　　　　　　　　　　　　　　　　　.
(4)有机农业简单地使用天然肥料,使蔬菜和水果既美味又有营养。
Organic agriculture simply uses natural fertilisers, and　　　　　　　　　　　　　　　　.
答案　(1)chemical agriculture and organic agriculture　(2)various opinions　(3)that food produced from chemical agriculture tastes flavourless　(4)makes vegetables and fruit tasty and nutritious
Step 3　句式升级
1.将上题中的句(1)和句(2)合并为含有定语从句的复合句
2.将上题中的句(4)升级为含有动词-ing形式的句子
答案　
1.In terms of the development of modern agriculture, chemical agriculture and organic agriculture are two key phrases, about which there are various opinions.
2.Organic agriculture simply uses natural fertilisers, making vegetables and fruit tasty and nutritious.
Step 4　连句成篇
利用以上几个句子,加上恰当的连接词和过渡句,必要时可以改变句式,使之成为一篇连贯的文章。
参考范文
In terms of the development of modern agriculture, chemical agriculture and organic agriculture are two key phrases, about which there are various opinions.
Chemical agriculture has many disadvantages. There is no doubt that the chemicals staying inside the crops can lead to cancer or other illnesses. Besides, the vegetables grow so fast that they contain little nutrition. Organic foods are becoming increasingly popular with customers. The first reason is that people attach great importance to health. Second, organic agriculture simply uses natural fertilisers, making vegetables and fruit tasty and nutritious.
So it is wiser to choose organic agriculture.
【随堂检测】
【夯实基础】
Ⅰ.主题写作
请以“Plastic bags or cloth bags ”为题写一篇80词左右的短文,要点包括:
1.塑料袋造成白色污染,很难分解,导致癌症或其他疾病;
2.布袋能多次使用;
3.你的倡议。
Plastic bags or cloth bags
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参考范文
Plastic bags or cloth bags
Plastic bags have become very common in our daily life. However, we have been finding that they can cause damage to the environment, even worse, to people's health.
What are some of the problems caused by plastic bags First, people often throw plastic bags here and there, making white pollution. Second, it takes a long time for plastic bags to break up. Last but not least, when heated, plastic bags can produce something harmful, which can eventually lead to cancer or other illnesses.
Therefore, we are beginning to turn to cloth bags. They can be used many times. It is also a good idea to make some by ourselves, which is interesting.
Let's use cloth bags in our daily life instead of plastic bags for the environment and for the sake of our health.
Ⅱ.主题活动(选做题)
　　Talk about the following questions in pairs, and share your ideas with your classmates.
1.What other disadvantages of chemical farming do you know
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2.What other advantages of organic farming can you think of
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答案　略