英语高二下北师大版Unit21《Human Biology》(Lesson 3)课件
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| 名称 | 英语高二下北师大版Unit21《Human Biology》(Lesson 3)课件 |  | |
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| 资源类型 | 教案 | ||
| 版本资源 | 北师大版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2013-03-11 21:02:00 | ||
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课件29张PPT。Unit 21 Human BiologyLesson 3 Epidemics Explainedwordsexercise 1Look at the Key Words. Which of these diseases can be epidemic?AIDS
Cancer
Headache
Flu
Heart disease
Stomachache
TBEpidemics:exercise 2 Work in pairs. Do you think these statements are
true(T) or false(F)?1.TB and flu kill millions of people every year.
2.Most of diseases are very new.
3.Epidemics have affected historical events.
4.It takes years for a disease to spread world wide.
5.Epidemics can wipe out up to half of the population in
highly populated areas.
6.More people died of a flu epidemic in 1918/1919 than
died in World War I.reading strategies:Sequencing of in formation:1.read the text with gaps to get the general idea
and see how it develops.
2.Read the sentences before and after the gaps to
give you an idea of what the beginning or end
of the missing paragraph might refer to.
3.Read the missing paragrapphs and look for
these references.
4.If a paragraph doesn’t seem to fit, you may
have made a mistake, so carefully reread each
paragraph.exercise 3 Now use the strategies to match the five paragraphs
(A-E) with gaps 2,4,7,9 and 11 in the text.The answers:
Paragraph A
Paragraph B
Paragraph C
Paragraph D
Paragraph EGap 2
Gap 4
Gap 7
Gap 9
Gap 11exercise 4 Complete these sentences about the text
in your own wordsexercise 5How did you feel after reading the article?
Tell the classVoice your opinion:Language points1.epidemics explained解释传染病
epidemics n.流行[传染]病, 时疫. (风尚等的)流行; (流行病的)蔓延
adj.传染[流行性]的
cholera epidemic霍乱流行
mass epidemic大流行; 集体流行
Eg. Violence is reaching epidemic levels.暴力达到了流行的程度。
2.epidemics throughout history历史上的传染病病例
throughout prep.遍及, 贯穿 adv.到处, 始终, 全部
Eg. The road is kept open throughout the year.这条路全年开通.
3.with new health threats on the rise.
对人类健康造成威胁的因素在不断增加。
rise n.上升, 增加, 上涨, 高地, 小山, 发生, 出现
vi.升起, 起身, 发源, 起义, 高耸, 增长, 上升, 复活 vt.使飞起
4.look at v.看, 考虑, 着眼于;回顾
5.Bacteria and viruses have been around since the beginning of life on earth
自从地球上有了生命,便有了各种细菌和病毒.6.as long as只要, 在...的时候;既然;以…为条件
Eg. You may borrow this book as long as you promise to give it back.
只要你答应归还，你就可以把这书借走。
As long as you've offered, I accept.既然你已给我，我就接受.
I will cooperate as long as I am notified on time.只要及时告诉我，我就会合作.
7.as early as 430 BC早在公元前430年
as early as早在
8.on record adv.记录在案, 公开宣布的;记录下来的
Eg. the coldest winter on record有记录以来最冷的冬天
9.attempt to do sth.
attempt n.努力, 尝试, 企图 vt.尝试, 企图
Eg. The boys attempted to leave for camping but were stopped by their parents.
男孩子们想去野营但被他们的父母们拦住了。
She made an attempt to cook the dinner.她试着做这顿饭。
10.sweep through
sweep v.扫, 打扫, 清扫, 席卷, 冲光, 扫过, 掠过
Eg. The wind swept over the plain.疾风横扫平原
11.die from the disease (病以外)因某事而死
Eg. Every winter some old people die from hypothermia.
每年冬天都有些老人死于体温过低。
12.be known as v.被认为是;以...知名; 被认为是; 称为
be known for 因...而著名
be known to 为...所知
13.a lack of （常与of连用）缺乏；需要
a lack of money 缺乏金钱
There is no lack of vegetable.蔬菜不缺。
14.provide the perfect conditions for..
provide for v.提供生活费; 养活; 为...作准备, 防备;规定
provide for old age防老
15.in highly populated areas… 在人口密集的地区16.one half to one third of the population was lost to the Black Death
有三分之一到一半的人死于黑死病.
be lost to不再属于...所有;对...无动于衷
17.it is believed to be…被认为是…
18. die of the flu 死于, 因...而死 .die in the war
19.begin with 首先, end with 以...结束
Eg. Knowledge begin with practice.认识从实践开始。
to begin with首先；第一点（理由）
Eg. We can't go. To begin with, it's too cold. 我们不能去。首先，天太冷了。
end up with 以告终
Eg. He ended his letter off with good wishes to his friend.
他给朋友的信以祝好这句话结束。
The meeting ended up with the singing of The Internationale.
会议最后以唱《国际歌》而结束。
20.the number of 总数；总和
作为一个集合名词， number既可以跟动词单数形式也可以跟动词复数形式。
当它前面是定冠词 the时，后跟单数动词.
Eg. The number of skilled workers is small.熟练工人数较少。
A number of the workers are unskilled.许多工人技术不熟练21.such as adv.例如...,象这种的;诸如..., 譬如说; 象...那样的; 如此...以致
Eg. such things as iron, silver, and gold铁、银和金这一类东西
22.natural defences against the disease 对抗这种病的自然抗体
23.be harmful to
Eg. Smoking can be harmful to your health.吸烟对身体有害。
24.make up v.弥补, 虚构, 缝制, 整理, 包装, 和解, 编辑, 化妆;补足,拼凑
Eg. She made up her face to look prettier.
她把脸化了妆以便看上去漂亮些。
The boy made up a story; it was not true.
男孩编了个故事，这故事不是真的。
make up a bed整理床铺
25.expand across
expand vt.使膨胀, 详述, 扩张 vi.张开, 发展
Eg. The bird expanded its wings and flew off.鸟展开翅膀飞走了
expand one's view阐述自己的观点
vocabulary:
synonymsexercise 6 Match the words from the passage(1-10)with
their meanings(a-j)1.Effects
2.Abnormal
2.Physician
4.Harmful
5.Staff
6.Aspect
7.Expand
8.Techniques
9.Accounts
10.acquirea)Doctor
b)Bad
c)Get
d)Part
e)Grow
f)Results
g)Results
h)Unusual
i)Ways
j)workersexercise 7 Find the correct prepositions to complete
each of these phrases from the text1….the beginning life Earth…(para.1)
2….25% and 50% the area’s population died the
disease…(para 3)
3….was one the key causes the fall the
Roman Empire…(pare 3)
4….struck the end the first World War and
continued the war..(para 6)Answers:
1.of,on
2.of,from
3.of,of,of
4.near,of,afterspeaking exercise 8Work in pairs. Which of these things do you think will
happen within the next 25 years?1.New drugs will stop all diseases.
2.Doctors will find a cure for SARS.
3.Flu will disappear.
4.AIDS will cause large epidemics.HOMEWORKcopy the new words Thank you!Byebye！别忘了记单词啊！
Cancer
Headache
Flu
Heart disease
Stomachache
TBEpidemics:exercise 2 Work in pairs. Do you think these statements are
true(T) or false(F)?1.TB and flu kill millions of people every year.
2.Most of diseases are very new.
3.Epidemics have affected historical events.
4.It takes years for a disease to spread world wide.
5.Epidemics can wipe out up to half of the population in
highly populated areas.
6.More people died of a flu epidemic in 1918/1919 than
died in World War I.reading strategies:Sequencing of in formation:1.read the text with gaps to get the general idea
and see how it develops.
2.Read the sentences before and after the gaps to
give you an idea of what the beginning or end
of the missing paragraph might refer to.
3.Read the missing paragrapphs and look for
these references.
4.If a paragraph doesn’t seem to fit, you may
have made a mistake, so carefully reread each
paragraph.exercise 3 Now use the strategies to match the five paragraphs
(A-E) with gaps 2,4,7,9 and 11 in the text.The answers:
Paragraph A
Paragraph B
Paragraph C
Paragraph D
Paragraph EGap 2
Gap 4
Gap 7
Gap 9
Gap 11exercise 4 Complete these sentences about the text
in your own wordsexercise 5How did you feel after reading the article?
Tell the classVoice your opinion:Language points1.epidemics explained解释传染病
epidemics n.流行[传染]病, 时疫. (风尚等的)流行; (流行病的)蔓延
adj.传染[流行性]的
cholera epidemic霍乱流行
mass epidemic大流行; 集体流行
Eg. Violence is reaching epidemic levels.暴力达到了流行的程度。
2.epidemics throughout history历史上的传染病病例
throughout prep.遍及, 贯穿 adv.到处, 始终, 全部
Eg. The road is kept open throughout the year.这条路全年开通.
3.with new health threats on the rise.
对人类健康造成威胁的因素在不断增加。
rise n.上升, 增加, 上涨, 高地, 小山, 发生, 出现
vi.升起, 起身, 发源, 起义, 高耸, 增长, 上升, 复活 vt.使飞起
4.look at v.看, 考虑, 着眼于;回顾
5.Bacteria and viruses have been around since the beginning of life on earth
自从地球上有了生命,便有了各种细菌和病毒.6.as long as只要, 在...的时候;既然;以…为条件
Eg. You may borrow this book as long as you promise to give it back.
只要你答应归还，你就可以把这书借走。
As long as you've offered, I accept.既然你已给我，我就接受.
I will cooperate as long as I am notified on time.只要及时告诉我，我就会合作.
7.as early as 430 BC早在公元前430年
as early as早在
8.on record adv.记录在案, 公开宣布的;记录下来的
Eg. the coldest winter on record有记录以来最冷的冬天
9.attempt to do sth.
attempt n.努力, 尝试, 企图 vt.尝试, 企图
Eg. The boys attempted to leave for camping but were stopped by their parents.
男孩子们想去野营但被他们的父母们拦住了。
She made an attempt to cook the dinner.她试着做这顿饭。
10.sweep through
sweep v.扫, 打扫, 清扫, 席卷, 冲光, 扫过, 掠过
Eg. The wind swept over the plain.疾风横扫平原
11.die from the disease (病以外)因某事而死
Eg. Every winter some old people die from hypothermia.
每年冬天都有些老人死于体温过低。
12.be known as v.被认为是;以...知名; 被认为是; 称为
be known for 因...而著名
be known to 为...所知
13.a lack of （常与of连用）缺乏；需要
a lack of money 缺乏金钱
There is no lack of vegetable.蔬菜不缺。
14.provide the perfect conditions for..
provide for v.提供生活费; 养活; 为...作准备, 防备;规定
provide for old age防老
15.in highly populated areas… 在人口密集的地区16.one half to one third of the population was lost to the Black Death
有三分之一到一半的人死于黑死病.
be lost to不再属于...所有;对...无动于衷
17.it is believed to be…被认为是…
18. die of the flu 死于, 因...而死 .die in the war
19.begin with 首先, end with 以...结束
Eg. Knowledge begin with practice.认识从实践开始。
to begin with首先；第一点（理由）
Eg. We can't go. To begin with, it's too cold. 我们不能去。首先，天太冷了。
end up with 以告终
Eg. He ended his letter off with good wishes to his friend.
他给朋友的信以祝好这句话结束。
The meeting ended up with the singing of The Internationale.
会议最后以唱《国际歌》而结束。
20.the number of 总数；总和
作为一个集合名词， number既可以跟动词单数形式也可以跟动词复数形式。
当它前面是定冠词 the时，后跟单数动词.
Eg. The number of skilled workers is small.熟练工人数较少。
A number of the workers are unskilled.许多工人技术不熟练21.such as adv.例如...,象这种的;诸如..., 譬如说; 象...那样的; 如此...以致
Eg. such things as iron, silver, and gold铁、银和金这一类东西
22.natural defences against the disease 对抗这种病的自然抗体
23.be harmful to
Eg. Smoking can be harmful to your health.吸烟对身体有害。
24.make up v.弥补, 虚构, 缝制, 整理, 包装, 和解, 编辑, 化妆;补足,拼凑
Eg. She made up her face to look prettier.
她把脸化了妆以便看上去漂亮些。
The boy made up a story; it was not true.
男孩编了个故事，这故事不是真的。
make up a bed整理床铺
25.expand across
expand vt.使膨胀, 详述, 扩张 vi.张开, 发展
Eg. The bird expanded its wings and flew off.鸟展开翅膀飞走了
expand one's view阐述自己的观点
vocabulary:
synonymsexercise 6 Match the words from the passage(1-10)with
their meanings(a-j)1.Effects
2.Abnormal
2.Physician
4.Harmful
5.Staff
6.Aspect
7.Expand
8.Techniques
9.Accounts
10.acquirea)Doctor
b)Bad
c)Get
d)Part
e)Grow
f)Results
g)Results
h)Unusual
i)Ways
j)workersexercise 7 Find the correct prepositions to complete
each of these phrases from the text1….the beginning life Earth…(para.1)
2….25% and 50% the area’s population died the
disease…(para 3)
3….was one the key causes the fall the
Roman Empire…(pare 3)
4….struck the end the first World War and
continued the war..(para 6)Answers:
1.of,on
2.of,from
3.of,of,of
4.near,of,afterspeaking exercise 8Work in pairs. Which of these things do you think will
happen within the next 25 years?1.New drugs will stop all diseases.
2.Doctors will find a cure for SARS.
3.Flu will disappear.
4.AIDS will cause large epidemics.HOMEWORKcopy the new words Thank you!Byebye！别忘了记单词啊！