Unit 5　Working the Land单元课件（共91张） 2025-2026学年高中英语人教版选择性必修第一册

(共71张PPT)
Unit 5　Working the Land
语言知识梳理
1. devote vt.把……献(给);把……专用于;专心于(常与介词to连用)(devoted adj.挚爱的;忠诚的 devotion n.奉献;忠诚;挚爱)
·devote…to (doing) sth
把……奉献给;专注于;献身;致力
devote oneself to (doing) sth
致力于(做)某事;献身于(做)某事
·be devoted to (doing) sth
专心于(做)某事;致力于(做)某事
2. convince vt.使相信;使确信;说服(convinced adj.确信的;坚信的 convincing adj.令人信服的)
·convince sb of sth
使某人确信/明白某事
convince sb to do sth 说服某人做某事
convince sb that…使某人相信……
·be convinced (that…)/of…
(某人)坚信……
3. assumption n.假定;设定;(责任的)承担;(权力的)获得(assume v.假定;设想;承担;假装 assuming conj.假如)
·on the assumption that…假定……
make an assumption 作出臆断
·assume sb/sth (to be)+adj./n.
假定/认为某人/某事(为)……
It is generally assumed that…
人们普遍认为……
·assuming (that)…假设……
4. alternative n.可供选择的事物 adj.可供替代的;非传统的(alternatively adv.可供选择地)
have no alternative but to do sth
别无选择只好做某事
an alternative to… ……的替代品
5. in turn相应地;转而;反过来;依次;轮流
·by turns轮流
take turns to do sth 轮流做某事
It is one’s turn to do sth
轮到某人做某事
·turn out结果是;生产;制造
1. given that引导的原因状语从句
Given that Yuan’s hybrids made him quite wealthy, one might think he would have retired to a life of leisure.考虑到杂交水稻使袁隆平变得相当富有,人们可能认为他会退休享受闲适的生活。
given that+从句,用来说明已知事实,表示“鉴于;考虑到”。
2. that/those的指代用法
Indeed, his slim but strong body was just like that of millions of Chinese farmers, to whom he had devoted his life.确实,他瘦削但结实的身躯看起来和他为之奉献了一生的千千万万的中国农民一样。
在该句中that指代中国农民的身躯。
·that/those 的指代用法:
that 用来指代“同名异物”的可数名词单数或不可数名词;those 用来指代“同名异物”的可数名词复数。
·one/ones 的类似用法:
one 用来指代“同名异物”的可数名词单数;ones 用来指代“同名异物”的可数名词复数。
3. 动词-ing形式作结果状语
Why different crops are grown is that they put important minerals back into the ground, making it ready for the next batch of crops.种植不同作物的原因是为了把重要的矿物质重新放回土壤之中,让土壤为下一批作物(的种植)做好准备。
在该句中,making it ready…为动词-ing形式作结果状语。动词-ing形式作结果状语时相当于一个并列谓语(and make it…),描述谓语动词发生后的一种自然而然的结果。
4. What keeps them from doing so is the fact that chemical farming serves the high demand for food around the world.他们不能如愿的原因是化学耕种满足了世界各地对粮食的大量需求。
在idea、 fact、news、hope、belief、thought、doubt等名词后面,用that 或其他连接代词、连接副词引导的从句称为同位语从句。同位语从句是对从句前面的名词的解释,说明前面的名词的具体含义。
单元语法深析
观察下面的句子,并感知主语从句的用法。
1. However, what concerned him most was that farmers often had poor harvests and sometimes even had a serious shortage of food to eat.
2. How this could be done was a challenging question at the time.
3. It is believed by some scientists that the long-term use can sometimes harm both the land and people’s health.
4. What Yuan Longping really cared about was not money or celebrity.
1. 主语从句的用法
主语从句是名词性从句的一种,在复合句中作主语,相当于名词。主语从句的位置可以在句首,也可以用it作形式主语,主语从句放在后面。
2. 主语从句的引导词
(1)连词that/whether,在主语从句中不充当任何成分,只起连接作用,不可省略,其中that没有词义, whether表示“是否”含义,但是不能替换为if(如果)。
That she survived the accident is a miracle.(that引导主语从句,在从句中不作成分且无意义)
她在事故中幸免于难简直是个奇迹。
Whether she comes or not doesn’t matter too much.(whether引导主语从句,在从句中不作成分,意为“是否”)
她来不来都关系不大。
(2)连接代词what/who/which,在主语从句中充当主语、宾语或表语,不可省略。
Come on, David!What we believe is that you can do it.(what引导主语从句,在从句中作宾语)
来吧,David!我们相信你能做到。
(3)连接副词when/where/how/why,在主语从句中作状语,分别表示时间、地点、方式、原因,不可省略。
Where I spend my summer vacation is none of your business.(where引导主语从句,在从句中作地点状语)
我在哪里过暑假不关你的事。
(4)另外, whoever/however/whatever/whichever等也可引导主语从句,在句中充当主语、宾语、表语等成分,不可省略。
Whoever breaks the law should be punished.(whoever引导主语从句,在从句中作主语)
无论谁触犯法律都应该受到惩罚。
3. it作形式主语的主语从句
在主语从句中,如果主语太长,宾语或表语又太短时,为了避免头重脚轻,保持句子平衡,通常会采用it作形式主语,真正的主语从句放在后面。常见的使用it作形式主语的句型如下:
(1)It+be+形容词+that从句
常见形容词:necessary、 likely、 clear、 right、 important、 possible、 strange
It is obvious that he should know about this.
他应该知道此事,这是显而易见的。
(2)It+be+过去分词+that从句
常见过去分词:said、 believed、 reported、 thought、 known
It is known that the Internet is vital to us. As a matter of fact, we benefit a lot from the rapid pace of the Internet development.
众所周知,互联网对我们至关重要。事实上,我们从互联网的快速发展中受益匪浅。
(3)It+不及物动词(短语)+that从句
常见不及物动词(短语):seem、 appear、happen、 turn out
It seems that they know what they’re doing.
看来他们知道自己在干什么。
(4)It+及物动词+宾语+that从句
常见“及物动词+宾语”结构:make no difference、 strike sb、 amaze sb
It struck me that you’d be better off working in another company.
我突然想到,你若在另一家公司工作,境遇会好一些。
(5)It+be+名词(词组)+that从句
常见名词(词组):a pity、 a shame、no wonder、 good news、 no surprise
It is a fact that English is accepted as an international language.
英语被认可为一种国际语言,这是一个事实。
4. 主语从句的语序和时态
(1)主语从句和其他名词性从句一样必须使用陈述语序,尤其是当主语从句是疑问词引导时,主语从句的语序仍须使用陈述语序。
What I’m hoping to accomplish is that my generation and younger start to reconsider and understand that jazz is not black and white any more.(what引导主语从句,陈述语序)
我希望实现的是,我这一代和年轻一代开始重新思考和理解,爵士乐不再是非黑即白的。
(2)主语从句的时态需要根据具体语境来确定,但是从句中若陈述的是客观事实或客观真理,则用一般现在时。
When he will come back is still unclear.
他什么时候回来还不清楚。
5. 主语从句作主语时谓语动词的选择
(1)主语从句作主语时,主句的谓语动词一般用单数形式。
Where he will get a job after graduation has puzzled him much.
毕业后到哪儿找份工作使他很困惑。
(2)what引导主语从句且主句为主系表结构时,主句谓语动词的单复数应与表语保持一致。
What the school needs most are books.
这所学校最需要的是书。
(3)如果由and连接两个或两个以上的主语从句作主语时,谓语动词用复数形式。
When they will start and where they will go have not been decided yet. 他们还没定下来在什么时候动身以及要去哪儿。
(4)由and并列两个或多个连接词引导同一个主语从句时,谓语动词用单数形式。
When and where the activity will take place hasn’t been decided.
何时何地举办这个活动还没确定。
1. 单句语法填空
(1)It happened 　that　 I was out when he called.
(2)　What　 we could do was to go back along the previous track slowly.
(3)That you don’t like him 　is　 (be) none of my business.
(4)Why and how he has finished the task 　remains　 (remain) unknown.
(5)What they will do and how they will do it 　are　 (be) unknown to everyone present.
that
What
is
remains
are
2. 补全句子
(1)据说是他的母亲鼓励他去旅行,这塑造了徐霞客的性格。
　It was said that　 it was his mother who encouraged him to travel, which shaped Xu Xiake’s character.
(2)他将和谁一起去北京还不得而知。
　Who he will go to Beijing with　 remains unknown.
(3)医生们真正怀疑的是,我妈妈是否不久就能从这场重病中恢复过来。
　What the doctors really doubt is　 whether my mother will recover from the serious disease soon.
It was said that
Who he will go to Beijing with
What the doctors really doubt is
单元主题表达
本单元的写作任务是写表达对农业生产观点的文章。高考英语写作中,发表观点、议论情景是常见的写作手法。发表观点就是通过议论或说理来表达作者的见解和主张,作者对某一问题持有一种看法,为了使读者同意自己的看法,提出若干理由,试图说服他人。发表观点时,我们要注意三个要素:论点、论据和论证。具体写作结构如图所示:
1. 开头句
(1)Recently our class has had a debate about whether organic farming is good for us. Different students hold different opinions.
最近我们班就有机农业是否对我们有益展开了一场辩论。不同的学生有不同的看法。
(2)There are different opinions among students as to organic farming.
对于有机农业,学生们有不同的看法。
(3)Opinions about organic farming vary from person to person. Some people are in favour of it while others are against it.
关于有机农业的看法因人而异。一些人赞成,而另一些人反对。
2. 中间句
(1)Some students are in favour of organic farming. Firstly, they think the vegetables of organic farming are grown without any chemical fertilisers. Besides, organic farming practices are designed to encourage soil and water conservation and reduce pollution. Last but not least, more and more people are demanding the most natural and nutritious choices for their family.
有些学生赞成有机农业。首先,他们认为有机农业的蔬菜种植没有使用任何化学肥料。此外,有机耕作方式旨在鼓励保持水土和减少污染。最后但同等重要的是,越来越多的人要求为他们的家人选择最天然和最有营养的食物。
(2)However, others are against it because it costs a great deal to develop organic farming.
然而,其他人则表示反对,因为发展有机农业要花费很多钱。
3. 结尾句
(1)As the old saying goes, everything has two sides. It has both advantages and disadvantages.
正如老话所说,凡事都有两面性,即既有优点,又有缺点。
(2)As far as I am concerned, I agree with the latter opinion to some extent. I think that…
就我而言,从某种程度上讲,我同意后一种观点。我认为……
(3)For my part, I think it reasonable to… Only in this way can you/we…
对我来说,我认为……是合理的。只有通过这种方式,你/我们才能……
单元要点回顾
1. 把……献(给);把……专用于;专心于vt.　devote　
2. 不足;缺少;短缺n.　　　　shortage　　　　　
3. 使相信;使确信;说服vt.　convince　
4. 特征;特点;品质n.典型的;独特的adj.　characteristic　
5. (通常经过努力)获得;得到vt.　attain　
6. 假定;设定;(责任的)承担;(权利的)获得n.　assumption　
7. 克服;解决;战胜vt.　overcome　
devote
shortage
convince
characteristic
attain
assumption
overcome
8. 扩大;增加vt.& vi.扩展;发展(业务)vt.　expand　
9. 估计;估价;估算vt.估计;估算n.　estimate　
10. 本国的;国内的;家用的;家庭的adj.　domestic　
11. 消耗;消耗量;消费n. 　consumption　　
12. 闲暇;休闲;空闲n.　leisure　
13. 泥土;土壤;国土;领土n. 　soil
14. 名望;名誉;名人;名流n.　celebrity　
15. 谷物;谷粒;颗粒n. 　grain
expand
estimate
domestic
consumption
leisure
soil
celebrity
grain
16. 想象;视力;视野;影像n.　vision　
17. 现实;实际情况;事实n. 　reality
18. 含盐的;咸的adj.　salty　
19. 城市的;都市的;城镇的adj.　urban　
20. 炸弹n.轰炸;对……投炸弹vt.　bomb　
21. 扩建部分;扩大;电话分机n.　extension　
22. 与化学有关的;化学的adj.化学制品;化学品n.　chemical　
23. 小麦;小麦籽n. 　wheat
vision
reality
salty
urban
bomb
extension
chemical
wheat
24. 味道;特点;特色n.　flavour　
25. 营养(物)的adj. 　nutritional
26.分布广的;普遍的;广泛的adj.　widespread　
27. 消化vt.& vi.领会;领悟vt.摘要;文摘n.　digest　
28. 例子;实例;事例n. 　instance
29. 向下(或向里)的距离;深(度) n.　depth　
30. 根;根茎;根部;根源n. 　root
31. 全部地;完整地;完全地adv.　entirely　
flavour
nutritional
widespread
digest
instance
depth
root
entirely
32. 方面;层面n. 　aspect
33. 有营养的;营养丰富的adj. 　nutritious　
34. 营养;滋养n.　　　 　nutrition
35. tackle 　解决(难题);应付(局面);处理　
36. crisis 　危机;危急关头
37. boost 　使增长;使兴旺;增长;提高;激励　
38. conventional 　传统的;习惯的
39. output 　产量;输出;输出量　
aspect
nutritious
nutrition
解决(难题);应付(局面);处理
危机;危急关头
使增长;使兴旺;增长;提高;激励
传统的;习惯的
产量;输出;输出量
prise 　包括;包含;由……组成　
41. generate 　产生;引起　
42. organic 　有机的;不使用化肥的;有机物的　
43. essential 　完全必要的;极其重要的　
44. mineral 　矿物;矿物质　
45. alternative 　可供选择的事物;可供替代的;非传统的　
46. grocery 　食品杂货店;[pl.]食品杂货　
47. hybrid 　杂交植(动)物;合成物;混合动力车　
包括;包含;由……组成
产生;引起
有机的;不使用化肥的;有机物的
完全必要的;极其重要的
矿物;矿物质
可供选择的事物;可供替代的;非传统的
食品杂货店;[pl.]食品杂货
杂交植(动)物;合成物;混合动力车
48. yield 　产量;产出;出产(作物);产生(收益、效益等);屈服;让步　
49. pollinate 　授粉;传粉
50. intense 　热切的;十分强烈的;激烈的　
51. strain 　(动、植物的)系;品种;拉伤;压力　
52. envision 　展望;想象
53. sorghum 　高粱;高粱米　
54. broom 　扫把;扫帚;金雀花
55. tunnel 　地下通道;地道;隧道　
产量;产出;出产(作物);产生(收益、效益等);屈服;
让步
授粉;传粉
热切的;十分强烈的;激烈的
(动、植物的)系;品种;拉伤;压力
展望;想象
高粱;高粱米
扫把;扫帚;金雀花
地下通道;地道;隧道
56. fertiliser 　肥料
57. alleviate 　减轻;缓解　
58. poverty 　贫穷;贫困
59. pesticide 　杀虫剂;除害药物　
60. bacterium 　细菌　
肥料
减轻;缓解
贫穷;贫困
杀虫剂;除害药物
细菌
1. 把……用于;献身;致力;专心 　devote…to　
2. 缺乏…… 　have a shortage of…　
3. 选择做…… 　choose to do　
4. 担任……工作 　work as　
5. 使某人能够做……　enable sb to do　
6. 包括;包含;由……组成(或构成) 　be comprised of　
7. 允许某人做某事 　allow sb to do　
devote…to
have a shortage of…
choose to do
work as
enable sb to do
be comprised of
　allow sb to do
8. 依赖;依靠 　depend on　
9. 也;还 　as well　
10. 因为 　because of　
11. 根本不;远远不 　far from　
12. 在内心深处;本质上;实际上 　deep down　
13. 关心;喜欢 　care for　
14. 捐赠;捐款 　make donations　
15. 实现梦想 　fulfil one’s dreams　
16. 成功做了…… 　succeed in doing　
depend on
as well
because of
far from
deep down
care for
make donations
fulfil one’s dreams
succeed in doing
17. 开放;开发 　open up　
18. 本质上;实际上;内心里 　at heart　
19. 充满远见 　full of vision　
20. 想象出 　dream up　
21. 削减;砍倒(树木) 　cut down　
22. 除了……以外(还) 　apart from/other than　
23. 处理;应付 　deal with　
24. 承诺;致力于 　commit oneself to　
open up
at heart
full of vision
dream up
cut down
apart from/other than
deal with
commit oneself to
25. 变成 　turn into　
26. 保护……免受…… 　protect…from…　
27. 目的是…… 　be intended to do　
28. 利用 　make use of　
29. 适应 　adapt to　
30. 抱怨 　complain about　
31. 下定决心做…… 　make up one’s mind to do　
32. 此外;还有 　in addition　
33. 相应地;转而;依次;轮流 　in turn　
turn into
protect…from…
be intended to do
make use of
adapt to
complain about
make up one’s mind to do
in addition
in turn
34. 实际上;事实上 　in fact　
35. 至于;关于 　as for　
36. 富含…… 　be rich in　
37. 转向 　turn to　
38. 关注;聚焦于 　focus on　
39. 无……的;摆脱了……的 　free of　
40. 例如;比如 　for instance　
41. 阻止某人做…… 　keep sb from doing　
42. 实施;执行;实行 　carry out　
in fact
as for
be rich in
turn to
focus on
free of
for instance
keep sb from doing
carry out
1. 确实,他瘦削但结实的身躯看起来和他为之奉献了一生的千千万万的中国农民一样。
Indeed, his slim but strong body was just like 　that ofmillions of Chinese farmers, 　to whom he had devoted his life　.
that of
to whom he had devoted his life
2. 为了应对这一危机,他选择了学习农业,并在重庆的西南农学院接受教育。
　To tackle this crisis　, he 　chose to study agriculture and received an education　 at Southwest Agricultural College in Chongqing.
3. 袁隆平坚信,可以在杂交水稻的培育中找到答案。
　Yuan was convinced that　 the answer could be found in the creation of hybrid rice.
To tackle this crisis
chose to study agriculture and
received an education
Yuan was convinced that
4. 然而,是否有可能培育出如水稻等自花授粉植物的杂交种,这是一个充满争议的问题。　
However, 　whether it was possible to develop　 a hybrid of self-pollinating plants such as rice was matter of great debate　.
whether it was possible to develop
a matter of great debate
5. 据估算,现在中国国内消费的稻米有大约60%来自袁隆平的杂交水稻品种形成的作物,这些品种(形成的作物)让中国农民每年能够生产出大约两亿吨稻米。
Today, 　it is estimated that　 about 60 percent of domestic rice consumption in China 　is comprised of　 crops 　gene rated from　 Yuan’s hybrid strains, and his strains have 　allow ed China’s farmers to produce　 around 200 million tons of rice per year.
it is estimated that
is comprised of
generated
from
allowed
China’s farmers to produce
6. 考虑到杂交水稻使袁隆平变得相当富有,人们可能认为他会退休享受闲适的生活。
　Given that　 Yuan’s hybrids 　made him quite wealthy　, one might think he would have retired 　to a life of leisure　.
Given that
made him quite wealthy
to a life of leisure
7. 即便到了晚年,袁隆平的内心仍然年轻、富有远见,每个人总是很兴奋地想看看他下一个梦想。
　Even in his later years　, Yuan Longping was still young 　at heart and full of vision　, and everyone was always excited to see 　what he would dream up next　.
Even in his later years
at
heart and full of vision
what he would dream up next
8. 自20世纪中叶以来,化学农药和人工肥料在农业中得到了广泛的应用。
Chemical pesticides and artificial fertilisers 　have b een in widespread use　 in farming since the middle of the 20th century.
have been in
widespread use
9. 至于化肥,使用化肥种植的农作物通常生长过快,营养不足。
　As for　 chemical fertilisers, crops grown with them usually grow 　too fast to be rich in nutrition　.
10. 种植不同的作物是为了把重要的矿物质放回土壤之中,让土壤为下一批作物(的种植)做好准备。
　Why different crops are grown　 is that they put important minerals back into the ground, 　making it ready　 for the next batch of crops.
As for
too fast to be rich in nutrition
Why different crops are grown
making it ready
基础词汇 拓展词汇 1 devote vt.把……献(给);把……专用于;专心于 　devotion　n. 奉献;忠诚;专心;挚爱;关爱 　devoted　adj. 挚爱的;忠诚的;全心全意的 devotee n. (狂热的)崇拜者;爱好者
devotion
devoted
基础词汇 拓展词汇 2 　short　adj. 短的;短期的;短暂的;不足的;短缺的 shortage n. 不足;缺少;短缺 　shorten　vi. & vt. (使)变短;(使)缩短 　shortcoming　n. 缺点;短处
3 convince vt. 使相信;使确信;说服 　convincingadj. 令人信服的;有说服力的 　convincedadj. 确信的;信服的 　convincingly　adv. 令人信服地;有说服力地
short
shorten
shortcoming
convincing
convinced
convincingly
基础词汇 拓展词汇 4 　assume　vt. 假定;假设;认为;承担(责任);就 (职) 　assumedadj. 假定的;假设的 assumption n. 假定;设定;(责任的)承担;(权利的)获得 　assumingconj. 假设……为真;假如
5 expand vt. & vi. 扩大;增加 vt. 扩展;发展 (业务) 　expansionn. 扩张;扩展;扩大;膨胀 　expansive　adj. 广阔的;辽阔的;浩瀚的;广泛的;全面的 　expandable　adj. 可扩张的;可扩充的;可膨胀的
assume
assumed
assuming
expansion
expansive
expandable
基础词汇 拓展词汇 6 　consume　vt. 消耗;耗费;吃;喝;饮 　consumer　n. 消费者;顾客;用户 consumption n. 消耗;消耗量;消费 /
7 estimate vt.估计;估价;估算n. 估计;估算 　estimationn. 判断;评价;看法 　overestimate　v. 高估;对……估计过高 estimable adj. 值得尊重的;值得敬佩的
consume
consumer
estimation
overestimate
基础词汇 拓展词汇 8 vision n. 想象;视力;视野;影像 　visionaryadj. 有眼力的;有创见的;有远见卓识的 　envision　vt. 展望;想象 /
9 　real　adj. 真实的;实际存在的;真正的 　realise　vi. & vt. 理解;领会;认识到;意识到 reality n. 现实;实际情况;事实 　realisationn. 实现;认识;领会;领悟
visionary
envision
real
realise
realisation
基础词汇 拓展词汇 10 　extend　vt. 使伸长;扩大;扩展;延长;使延期 　extensiveadj. 广阔的;广大的;大量的;广泛的 　extendedadj. 延长了的;扩展了的 extension n. 扩建部分;扩大;电话分机
11 nutrition n. 营养;滋养 　nutritionaladj. 营养(物)的;营养(学)的 　nutritiousadj. 有营养的;营养丰富的 　nutrient　n. 营养素;营养物
extend
extensive
extended
nutritional
nutritious
nutrient
基础词汇 拓展词汇 12 digest vt. & vi.消化 vt. 领会;领悟 n. 摘要;文摘 　digestion　n. 消化;消化能力 　digestiv　adj. 消化的;和消化有关的 　digestibleadj. 易消化的;口感好的;易理解的;可领会的
digestion
digestive
digestible
基础词汇 拓展词汇 13 　deep　adj. 深的;厚的;深沉的;低沉的 　deeply　adv. 很;非常;极其;深刻地;强烈地;深沉地 depth n. 向下 (或向里)的距离;深 (度) 　deepen　vi. & vt. (使)变深; (使)加深;(使情感、感觉等)变强烈
deep
deeply
deepen
基础词汇 拓展词汇 14 　alter　vt. (使)改变;更改;改动 　alteration　n. 改变;变化;更改;改动 alternative n. 可供选择的事物 adj. 可供替代的;非传统的 　alternatively　adv. (引出第二种选择或可能的建议)要不;或者
alter
alteration
alternatively