人教版（2019）选修一Unit 5 Working the Land Using Language & Assessing Your Progress课件(共35张PPT)

(共35张PPT)
UNIT 5
Section C　Using Language & Assessing Your Progress
Part 1　Reading comprehension
Part 2　Language points
目录索引
Part 1　Reading comprehension
第一步速读课文 理清脉络
Activity 1　What does the text mainly tell us
A.The goals of using organic and chemical farming methods.
B.The advantages and disadvantages of two farming methods.
C.The advantages of organic farming.
D.The disadvantages of chemical farming.
B
Activity 2　Read the text quickly and fill in the blanks.
chemical
organic
rich soil
第二步精读课文 领悟细节
Activity 3　Read the text carefully and choose the best answer.
1.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.
D
2.Farmers 　　　so that the soil may not get exhausted.
A.grow the same crops year after year
B.use natural fertilisers
C.change crops every few years
D.use chemical fertilisers
3.Why do organic farmers change the kind of crop grown in each field every few years
A.It helps put important minerals back into the ground.
B.It can avoid damage to the environment.
C.It can help increase output.
D.The writer didn’t tell us.
C
A
4.What is the author’s purpose of writing the passage
A.To call on farmers to turn to organic farming.
B.To introduce some good ways to make the soil rich.
C.To urge the government to stop using pesticides.
D.To give some advice on how to increase the output of crops.
A
Activity 4　思考分享 提升思维
1.Do you prefer to buy organic foods in the supermarket Why or why not
2.Do farmers in your hometown use organic farming methods Why or why not
The answer is open.
The answer is open.
Activity 5　诵读佳句 学练写作
1.Read the passage carefully and find the sentences describing the disadvantages of chemical farming.
(1)In addition,these chemicals can stay in the soil and underground water sources for a long time.
(2)This affects the crops grown on the land and,in turn,the animals and humans who digest them.
(3)Many people worry that these chemicals may make them ill and even cause cancer.
2.Read the passage carefully and find the sentences describing the advantages of organic farming.
(1)Organic farmers focus on keeping their soil rich and free of disease through natural means.
(2)This makes the soil in their fields richer in minerals.
(3)The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to people’s health.
第三步深读课文 融会提能
Activity 6　课文语篇填空
Chemical pesticides and artificial fertilisers have been in widespread use in farming 1. _____________the middle of the 20th century,but scientists found that their long-term use can sometimes do harm to both the land and people’s health.In most 2._____________(country),some pesticides like DDT have been prohibited because of the damage 3._____________(cause) to people and the environment.
since
countries
caused
4._____________(solve) the problem,some farmers have switched to organic farming.They use natural waste from animals as fertiliser instead of artificial fertilisers.By 5._____________(do) so,they make the soil in their fields 6._____________(rich) in minerals than before.Many other methods are also used to produce rich soil.Farmers often change 7. _____________ kind of crop grown in each field every year.In this way,some important minerals 8._____________(put) back into the ground.
Some people would prefer to stop the use of man-made chemicals in agriculture 9._____________(complete),but organic farming can’t serve the high demand for food around the world.So scientists have to find a suitable solution 10. _____________ the problem.
To solve
doing
richer
the
are put
completely
to
Activity 7　长难句分析
1.Why引导的主语从句　　　that引导的表语从句
Why different crops are grown is that they put important minerals back into the ground,making it ready for the next batch of crops.
动词-ing形式短语作结果状语
[尝试翻译]
为什么种植不同的作物是因为它们把重要的矿物质放回地里,让它为下一批作物做好准备。
2.　　　主语从句　　　 系动词　 表语
What keeps them from doing so is the fact that chemical farming serves the high demand for food around the world.
　　　that引导的同位语从句
[尝试翻译]
阻止他们这样做的是化学农业满足了世界各地对粮食的巨大需求。
Part 2　Language points
基础落实 必备知识全过关
Ⅰ.重点单词
必记写作词汇
1.　　　　　　 n.贫穷;贫困
2.　　　　　　 adj.分布广的;普遍的;广泛的
3.　　　　　　 adj.完全必要的;极其重要的
4.　　　　　　 n.可供选择的事物 adj.可供替代的;非传统的
5.　　　　　　 n.食品杂货店;[pl.]食品杂货
6.　　　　　　 n.例子;实例;事例
7.　　　　　　 n.根;根茎;根部;根源
8.　　　　　　 n.方面;层面
poverty　
widespread　
essential　
alternative　
grocery　
instance　
root　
aspect
识记阅读词汇
1.fertiliser n. 　　　　　　　　
2.alleviate vt. 　　　　　　　　
3.organic adj. 　 　　　　　　　
4.pesticide n. 　　　　　　　　
5.mineral n. 　　　　　　　　
6.batch n. 　　　　　　　　
vt. 　　　　　　　　
肥料　
减缓;缓解　
有机的;不使用化肥的;有机物的　
杀虫剂;除害药物　
矿物;矿物质
一批;一组
分批处理
串记拓展词汇
1.　　　　　　 adj.营养(物)的→nutritious adj.有营养的;营养丰富的
→　　　　　　 n.营养;滋养
2.　　　　　　 vt.& vi.消化　vt.领会;领悟→digestion n.消化;领悟
3.　　　　　　 n.向下(或向里)的距离;深(度)→deep adj.深的;深远的
4.　　　　　　 adv.全部地;完整地;完全地→　　　　　　 adj.完整的;完全的
nutritional
nutrition
digest
depth　
entirely
entire
Ⅱ.重点短语
1.　　　　　　　　　 在使用中;被使用
2.　　　　　　　　　 相应地;转而;依次;轮流
3.　　　　　　　　　 对……造成损害
4.　　　　　　　　　 富含……,……含量高
5.　　　　　　　　　 转向
6.　　　　　　　　　 例如;比如
7.focus on　　　　 　　　　　　　　
8.keep...free from/of 　　 　　　　　　
9.meet that need 　　　　　　　　
in use　
in turn　
cause damage to　
be rich in
switch to　
for instance　
关注;聚焦　
使……免受(影响、伤害等);使……不含有害物　
满足那样的需求
要点探究 能力素养全提升
基础词汇——语境记忆
1.widespread adj.分布广的;普遍的;广泛的
【佳句背诵】Heavy rains have led to the most widespread flooding in a decade.[自然灾害]
暴雨导致了十年来最广泛的洪水。
2.essential adj.完全必要的;极其重要的
【佳句背诵】It is essential that we (should) deal with the problem.[观点建议]
我们很有必要处理这个问题。
3.instance n.例子;实例;事例
【佳句背诵】There are jobs more dangerous than truck driving;for instance,training lions.[观点建议]
有些工作比开卡车更危险;例如,训狮。
4.depth n.向下(或向里)的距离;深(度)
【佳句背诵】If you come to visit China,you will experience a culture of amazing depth and variety.[文化介绍]
如果你来中国旅游,你将体验到一种深度和多样性惊人的文化。
5.entirely adv.全部地;完整地;完全地
【佳句背诵】Her satisfying exam results are entirely due to her hard work.[人物介绍]
她令人满意的考试成绩完全归功于她的努力。
高频词汇——讲练互动
1.in turn 相应地;转而;依次;轮流
(1)in one’s turn轮到某人;接着
(2)by turns轮流;依次
(3)take turns doing/to do...轮流做……
(4)it’s one’s turn to do sth轮到某人做某事
【佳句背诵】People try to avoid transportation delays by using their own cars,and this in turn creates further problems.[观点看法]
人们使用自己的汽车来避免交通延误,而这反过来又造成了进一步的问题。
【即学即练】单句语法填空/一句多译
①During the summer holidays,the teachers were on duty 　　　　turns.
②It’s finally our turn 　　　　　　(do) the wallboard in the school hall!
③他们轮流照顾他们的父母。
→They 　　　　　　　　　　　　　　their parents.
→They 　　　　　　　　their parents 　　　　　　　　.
by
to do
take turns to look after
look after
in turn/by turns
2.alternative n.可供选择的事物　adj.可供替代的;非传统的
(1)have no alternative but to do sth别无选择,只好做某事
an alternative to...……的替代品
an alternative method of doing sth做某事的其他方法
(2)alternatively adv.可供选择地
【佳句背诵】You can be paid in cash weekly or by cheque monthly;those are the two alternatives.[工作介绍]
你的工资可以按周支付现金,也可以按月支付支票;这是两种选择。
【即学即练】单句语法填空/词汇升级
①Check out the other 　　　　　　(alternative) before deciding whether to go to a nearby college.
②The agency will make travel arrangements for you.　 　 　(alternative),
you can organize your own transport.
③I had no choice but to accept his invitation.(升级加黑词汇)
→I had no　　　　　　 but to accept his invitation.
【名师点睛】 “别无选择只好做某事”的其他表达方式:
(1)have no choice but to do sth
(2)can’t do sth but do sth
alternatives
Alternatively
alternative
多义词汇——自主练透
教材熟词生义
1.digest
项目 意义 例句
熟义 vt.& vi. 　　　 He has to avoid fat because his body can’t digest it.
生义 vt.　　　　 I have digested most of the important points in the book.
n.　　　　 I considered myself a member of Reader’s Digest at the age of six.
消化
领会;领悟
摘要;文摘
2.root
项目 意义 例句
熟义 n.　　　　 After 20 years in America,I still feel my roots are in England.
n.　　　　 Some roots do another job besides feeding their plants.
生义 n.　　　　 Money,or love of money,is said to be the root of all evil.
根
根茎
根源
重点句式——多维剖析
1.not only...but also...不仅……而且……
【教材原句】For example,pesticides can damage the land by killing not only harmful bacteria and insects,but also helpful ones.
例如,杀虫剂不仅可以杀死有害的细菌和昆虫,还可以杀死有益的昆虫,从而破坏土地。
(1)not only...but also...用于连接两个表示并列关系的成分,着重强调后者,其意为“不仅……而且……”;其中的also有时可以省略。
(2)not only...but also...连接两个句子,且not only位于句首时,not only后面的句子要用部分倒装。
(3)not only...but also...连接的两个成分作主语,其谓语通常与靠近的主语保持一致。
【佳句背诵】His father,a kind-hearted scientist,is respected and loved not only by his friends but also by his family.[人物介绍]
他的父亲是一位心地善良的科学家,他的朋友和家人都尊敬和爱戴他。
【即学即练】单句语法填空/句式升级
①Not only the children but also their coach 　　　　　　(be) fond of playing football.
②There,he not only 　　　　　　(do) well as a student but also became an accomplished public speaker.
③You will not only help your young volunteers to develop personally,but you’ll also learn new skills and increase your cultural awareness.
→　　　　　　　　　　　　　　 your young volunteers to develop personally,but you’ll also learn new skills and increae your cultural awareness.(倒装句)
is
did
Not only will you help
2.动词-ing形式作结果状语
【教材原句】Why different crops are grown is that they put important minerals back into the ground,making it ready for the next batch of crops.
为什么要种植不同的作物是因为它们把重要的矿物质放回地里,让它为下一批作物做好准备。
(1)动词-ing形式短语作结果状语,通常表示一种自然的结果,即属预料之中的事。
(2)动词不定式作结果状语,主要表示没有预料到的情况或结果,即属预料之外的事。
【佳句背诵】China opened up the Silk Road,promoting the communication between China and other countries.[地点介绍]
中国开辟了丝绸之路,促进了中国与世界各国的交流。
【即学即练】单句语法填空/句式升级
①They reached the company out of breath,only 　　　　　　　(tell) they were fired.
②There is mud and water everywhere,　　　　　　(make) it difficult to travel from place to place.
③First of all,I speak English fluently.It allows me to communicate with visitors without delay.
→First of all,I speak English fluently 　　　　　　　　　　to communicate with visitors without delay.(定语从句)
→First of all,I speak English fluently,　　　　　　　　 to communicate with visitors without delay.(分词作状语)
to be told　
making
which allows me
allowing me
本 课 结 束