内容正文:
Unit 5 A delicate world
学
精 听 练 习
完成教材
Activity 1
后, 完成以下细节
填空练习。
Connected Together
Between where I am standing and wher鄄
ever you are sitting, there are millions of di鄄
fferent 1. of plants and animals, mi鄄
llions of different species, all living together in
the environment, in something we call an
2. . Now in order for an ecosystem
to be 3. , in order for it to be
healthy, it has to have different kinds of plants
and animals
—
lots of different kinds of plants
and animals...something we call
“
biodiversi鄄
ty
”
. Now biodiversity 4. kind of
complicated. But if you listen, it also sounds
kind of nice.
This is the Earth, our world. All the liv鄄
ing things that we know of live here, and they
live in ecosystems, places like tundras, taiga,
savannahs, grasslands, prairies, deserts, steppes,
intertidal zones, subtidal zones, continental
shelves, deep ocean zones, estuaries, deciduous
forests, temperate rain forests, tropical rain
forests, Artic ice packs, wetlands, marine mud
flats and cities. That蒺s a lot of environments
but there are a lot of living things to 5.
them up. The Earth蒺s environments are
just crowded with life. Living things take hold
6. they can.
Here蒺s an insect living right on top of
blades of grass. It蒺s a living thing that lives on
other living things. See, environments always
have living parts and 7. parts. Some
animals live on top of plants, some animals
live in the water, some plants grow on rocks.
It蒺s all part of the 8. .
Nearly 9. of the world蒺s surface
is covered with water. So most of the world蒺s
Unit 5 A delicate world
Section Ⅰ Starting out
学习目标
1.
通过视频, 感知地球生态系统的多样性及所有生物之间相互依赖的关系。
2.
观察、 对比三幅咸海卫星照片, 想象咸海未来的变化并分析原因, 初步思考人类活动对
地球产生的影响。
必备
知识
单词
affect
短语
live on depend on
关键能力 听、 说
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高中英语选择性必修 第二册 (外研版) 精编版
学
living things live here, just one ecosystem af鄄
ter another. Now
[
as
]
near as we can tell, all
[
the
]
living things depend on other living
things. So the more different kinds of living
things in an ecosystem, the more 10.
it is. We call this
“
biodiversity
”—
different
kinds of life.
We can think of an ecosystem as this
wooden 11. game. See all the diffe鄄
rent species?
They all fit together and they 12.
on each other to live. And you know, once in
a while a species will go 13. , it蒺ll
disappear from the ecosystem. You can see
how you can lose... a few of those without too
much trouble. But
[
if
]
you start to lose too
many, the whole thing becomes...becomes a
little...rickety. Now, where do people fit in?
Oh, they fit in just about everywhere. Just
about anywhere you can walk, you蒺ll find peo鄄
ple living because people are living things and
they are part of the ecosystem. So when we go
to 14. an ecosystem we have to be
15. about how things fit 16.
or there won蒺t be a place for us. We have to
be very careful...extremely careful.
重 点 知 识
affect vt.
(
1
) 意为 “影响”。
With the government蒺s aid, those
(
who
were
)
affected by the earthquake have
moved to the new settlements.
在政府的
帮助下, 那些受到地震影响的人已经搬
到新的定居地。
(
2
) 意为 “ 使感染 (疾病)”。
Diseases affect almost everyone at
sometime during their lives.
生活中几乎
每个人都会生病。
(
3
) 意为 “使感动; 打动”。
She was deeply affected by the story.
她
被故事深深感动了。
拓展:
effect n.
结果, 效应, 作用, 影响
誅
牛刀小试
食物是为受地震影响的地区准备的。
The food is for the areas
(
affect
)
by the earthquake.
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高中英语选择性必修 第二册 (外研版) 精编版
Section Ⅰ Starting out
精听练习
1. types 2. ecosystem 3. successful 4. sounds
5. fill 6. everywhere 7. non鄄 living 8. ecosystem
9. three quarters 10. successful 11. puzzle 12. depend
13. extinct 14. manage 15. careful 16. together
重点知识
affected
Section Ⅱ Understanding
ideas
文脉梳理
CFEADB
品鉴语言
1. contrast dramatically 2. existed in perfect harmony
with 3. unknowingly brought 4. took over the island
5. developed an appetite for the birds 6. a source of food
7. digging holes 8. exploding rabbit population 9. in
turn 10. died out 11. an official nature reserve 12. out
of control 13. come up with a plan 14. With this goal in
mind 15. in consequence 16. as the saying goes
17. they developed an immunity to the virus 18. needed
solving once and for all 19. remove the last remaining in鄄
vading species 20. owe it to the island to give it a happy
ending
重点知识
1. ①why/the reason why you failed to achieve your
goal ②failed in chemistry
2. it
;
to clean
3. ①developed an interest ②has developed the habit
of reading ③have developed an immunity
Section Ⅲ Using language
重点语法
① I consider it no good playing computer games.
② I think it unpractical to expect the task to be finished
in a week. ③ I owe it to you that I can make such a
great achievement. ④The Internet makes it convenient
for us to communicate with each other.
话题词块
1. Producers 2. absorbing light 3. Primary con鄄
Unit 5 A delicate world
pressions 9. over the last few decades 10. the words we
use 11. in a large Asian supermarket 12. how to use
chopsticks 13. go abroad to enjoy food 14. it isn蒺t a
surprise 15 . not unusual 16 . connecting people
17. smaller and smaller 18. a global village
Section Ⅳ Developing ideas
文脉梳理
1. The setting of the address is on 19 November
1863
,
in a field in Gettysburg
,
Pennsylvania. The back鄄
ground of the address is the Battle of Gettysburg in 1863
,
which resulted in over 50,000 casualties.
2. It was a new nation conceived in Liberty and dedi鄄
cated to the proposition that all men are created equal./It
aimed at bringing freedom to the people and was based on
the principle that all men are created equal.
3. It would test whether a nation conceived in Liberty
and dedicated to the proposition that all men are created
equal can long endure.
4. They gave their lives so that their nation might live.
They were brave men whose struggles had consecrated the
ground.
5. That this nation shall have a new birth of freedom
;
and that this government of the people
,
by the people
,
for
the people
,
shall not perish from the earth.
6. The living should be dedicated to the task.
重点知识
1. ①
增加
②
爬上
③
骑上
④
组织
⑤
山
2. ① It is really my honour to stand here to deliver an
address. ② when he addressed me in fluent English
3. ①
部门
②
除法
③
分配
④
分歧
Section Ⅴ Presenting ideas
例文鉴赏
Who the person is
:
Edgar Snow
,
an American jour鄄
nalist.
What boundary he has broken
:
He broke the ideolo鄄
gical boundaries.
How he achieved this
:
He spent time with...
,
listened
to their stories...and conducted interviews with...
Comments on him
:
He had special insight and bra鄄
very...
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