北师大版（2019）选择性必修第一册Unit 3 Conservation 　Topic Talk & Lesson 1 The Sixth Extinction 课件(共64张PPT)

(共64张PPT)
Unit 3　Conservation
Section Ⅰ　Topic Talk & Lesson 1 The Sixth Extinction
一、单词英汉互译
1.conservation / k ns veI n/ n.　　　　　
2.plastic / pl stIk/ adj.　　　　　　　
3.illegally /I li li/ adv.　　　　　　　　　　　
4.extinct /Ik stI kt/ adj.　　　　　　　　　　　
5.incredibly /In kred bli/ adv.　　　　　　　　　　
6.endangered /In deInd d/ adj.　　　　　　　
7.solar / s l / adj.　　　　　　　　　
保护
塑料制的
非法地,违法地
灭绝的,绝种的
非常地,极端地
濒危的
太阳光(能)的
8.hatch /h t / vi.&vt.　　　　　
9.restore /rI st / vt.　　　　　
10.　　　　　　　 /dI str I/ vt.破坏;毁掉
11.　　　　　　 / aIt m/ n.一项,一条
12.　　　　　　　 / ri saIk l/ vi.&vt.再利用,回收利用
13.　　　　　　　　 /In f m tIv/ adj.有教育意义的;知识性强的
14.　　　　　　 / ret/ n.威胁;(灾难等坏事)发生的可能
15.　　　　　　 /swIt / vi.&vt.转换,改变
(使)孵化
(使)恢复
destroy　
item
recycle　
informative　
threat　
switch
16.　　　　　　 / spi i z/ n.物种,种
17.　　　　　　　 / n ju u l/ adj.异常的;不平常的
18.　　　　　　 /m s/ adj.大量的
19.　　　　　　 / ve rid/ adj.各种各样的,形形色色的
20.　　　　　　　 /dI kri s/ vi.&vt.减少　n.减少;减少的量
21.　　　　　　 / fekt/ vt.影响
species　
unusual　
mass　
varied
decrease
affect
二、短语英汉互译
1.wipe out 　　　　　　　　　　　
2.cause for concern　　　　　　　　　　　
3.be at risk 　　　　　　　　　　　
4.solar energy 　　　　　　　　　　　
5.off the coast 　　　　　　　　　　　
彻底毁灭
引起忧虑
处境危险,受到威胁
太阳能
远离海岸线
6.　　　　　　　　　　　　 起某种作用
7.　　　　　　　　　　　　 尽自己的职责
8.　　　　　　　　　　　　 寻找
9.　　　　　　　　　　　　 消失;绝迹,灭绝
10.　　　　　　　　　　　　 把……归咎于
have a role　
do one’s part
hunt for　
die out　
be to blame
一、阅读课文“THE SIXTH EXTINCTION”,判断正误(T/F)
1.It is not common to see animals extinct in our planet.(　　)
2.The death of the dinosaurs occurred in the forth mass extinction.(　　)
3.Species are dying out at an alarming rate.(　　)
4.Up to three-fourths of species will be extinct if there is a sixth mass extinction.(　　)
5.A sixth extinction is unavoidable.(　　)
F
F
T
T
F
二、阅读课文“THE SIXTH EXTINCTION”,选择正确答案
1.Which of the following is not included in the causes for the last five extinctions
A.Global warming.
B.Volcanic eruptions.
C.The decrease of the oxygen content of the sea.
D.Human activity.
D
2.Which of the following doesn’t belong to human activity
A.Deforestation.
B.Air and water pollution.
C.Changes in sea levels.
D.Overfishing.
C
3.What is the purpose of the last paragraph
A.Appeal to people to protect the Earth.
B.Blame people for destroying the environment.
C.Urge the government to take action.
D.Warn the public to reduce their destructive behaviour.
A
4.What contributed to the survival of the black robin
A.The restoration of their habitats.
B.The efforts of the wildlife workers.
C.The removal of animals hunting them.
D.The chicks raised by the workers.
B
三、仔细阅读课文“THE SIXTH EXTINCTION”,并根据课文内容将短文补充完整
Up to now,there 1.　　　　　　　　　　(be) five mass extinctions,where entire species are wiped 2. 　　　,among which the 3.　　　　　　(three) one is known as “Great Dying”.There are 4. 　　　　　　(vary) reasons resulting in the extinction,5.　　　　　　　(range) from volcanic eruptions to 6.　　　　　　　(change) in sea levels.
has been
out
third
varied
ranging
changes
Many experts believe we are entering the sixth extinction and human activity is 7.　　　　　　　(blame).The rate at 8.　　　　　　 animals are dying out 9.　　　　　(become) a cause for concern.We need to take steps to save endangered species and stop destroying 10.　　　　　　 planet where we live.
to blame
which
becomes
the
1.Our environment needs protection.(Page 50)
我们的环境需要保护。
★need v.需要
The car needs washing.
The car needs to be washed.
这辆车需要洗了。(need doing 主动表被动,相当于need to be done)
【合作探究】
读一读·细观察　
阅读下列句子,写出句中与need 相关的词组和含义
①There is no need to worry about him.
词组 There is no need to do
含义 做……没有必要
②There is no need for further discussion on the issue.
词组 There is no need for
含义 ……没有必要
③Relief should be given to people in need.
词组 in need 含义 有需要的
④They printed another 10,000 books to meet the needs of the readers.
词组 meet the need(s) of
含义 满足……的需求
⑤You needn’t have taken a taxi.It is only 3-minute walk.
词组 needn’t have done
含义 本不需要做
说一说·勤归纳　
记一记·长知识　
与need doing 主动表被动,相当于need to be done用法相似的动词还有:want,require,deserve 等等。
The heroic deed deserves praising.
The heroic deed deserves to be praised.
英雄事迹值得赞扬。
【即学即用】
单句语法填空
①A friend 　　　　　　need is a friend in deed.
②The meat needs 　　　　　　　　　　　　(roast) before being served.
③There is no need 　　　　　　　　　　(bother) him.We can manage it by ourselves.
in
roasting/to be roasted
to bother
完成句子
④我们本不需要再买这些椅子。储藏室有多余的。
We 　　　　　　　　　　　　　　　　all these chairs.
There are some extra in the storage room.
⑤我们书店很需要《哈利·波特》系列的书。
The Harry Potter series 　　　　　　　　　　in our store.
needn’t have bought
are in great need
2.I really feel strongly that we need to change the way we live in order to protect our planet.(Page 50)
我确实强烈地感到,为了保护我们的星球,我们需要改变我们的生活方式。
剖析 the way后加从句时,表示“……的方式”,通常可以用in which,that引导或者不加引导词。
I don’t like the way you talk to your mom.
I don’t like the way that you talk to your mom.
I don’t like the way in which you talk to your mom.
我不喜欢你跟你妈妈讲话的方式。
【合作探究】
读一读·细观察　
阅读下列句子,用相似的结构改写句子
①I was never allowed to sing the way I wanted to.
I was never allowed to sing the way that/in which I wanted to.
②Colour is the key to making a room feel the way you want it to feel.
Colour is the key to making a room feel the way that/in which you want it to feel.
说一说·勤归纳　
【即学即用】
单句语法填空
①The music can’t be presented today the way 　　　　it was in 1908 or 1958.
②The music can’t be presented today the way in 　　　it was in 1908 or 1958.
that
which
翻译句子
③它必须继续往前走,因为世界运作的方式是不一样的。(用至少两种方式翻译)
It has to continue to move,because the way (that/in which) the world works is not the same.
3.Conservation is a state of harmony between men and land.
(Page 51)
保护是一种人与土地的和谐状态。
★state n.状态
He is now in a critical state.If he can pull through,everything will be fine.
他现在处于关键的状态。如果他能挺过去,一切都会好起来。
【合作探究】
读一读·细观察　
阅读下列句子,写出句中与 state相关的词组、词性和含义
①The state-run news agency released a breaking news this morning.
词性 形容词　含义 国营的
②The law did not state clearly what information is fake.
词性 动词　含义 说明
③Which of the following statements is true
词性 名词　含义 说法
④The office made a public/an official statement to clarify the matter.
词组 a public/an official statement
含义 公开/官方声明
说一说·勤归纳　
【即学即用】
单句语法填空
①At the beginning,the US was made up of 13　　 (state).
②I was 　　　　　　a confused state of mind and couldn’t understand what he was talking about.
完成句子
③肉处于冰冻的状态,所以我们不能直接用。
The meat was 　　　　　　　　　so we couldn’t use it directly.
states
in
in a frozen state
4.How many times up to today has life on Earth almost died out (Page 52)
到今天为止,有多少次地球上的生命几乎灭绝
★up to today 直到今天
Up to today,over 50 candidates have applied for the job.
到今天为止,已有50多个人申请了这份工作。
【合作探究】
读一读·细观察　
阅读下列句子,写出句中与 up to 相关的词组和含义
①It is up to you to decide whether to participate or not.
词组 up to sb　含义 取决于
②The stadium can seat up to 60,000 people.
词组 up to　含义 多达
③What has he been up to recently
词组 be up to sth 含义 在做某事(非正式)
看一看·助记忆　
说一说·勤归纳　
【即学即用】
单句语法填空
①They 　　　　　　　　　　　　(receive) over 50 complaints about the noise up to now.
②It is up 　　　　　　you to decide whether to accept the offer or not.
have received
to
翻译句子
③多达5,000人参加了他的葬礼。
④我很好奇你最近在搞什么鬼。
Up to 5,000 people attended his funeral.
I was wondering what you have been up to recently.
5.And the fifth event,which occurred 66 million years ago, caused the death of the dinosaurs.(Page 52)
第五次物种大灭绝事件发生在6,600万年前,导致了恐龙的死亡。
★occur vi.发生
A great decline in young workforce is likely to occur in China.
中国可能会出现年轻劳动力大幅减少。
【合作探究】
读一读·细观察　
阅读下列句子,写出句中与 occur相关的词组、词性和含义
①Cultural differences occur wherever you go.
词性 动词　含义 存在
②I don’t want anything bad to occur to you.
词组 occur to sb
含义 发生在某人身上
③It occurred to me that I could borrow a bike from you.
词组 occur to sb
含义 某人想到……
记一记·长知识　
【即学即用】
单句语法填空
①A terrible accident 　　　　　　　(occur) yesterday, claiming 15 lives.
②It occurred 　　　　　　him that he had an important meeting to attend the next morning.
occurred
to
完成句子
③他突然间想到他把钥匙落在办公室了。
　　　　　　　　　　　　　　　　　　　　　that he had left the key in the office.
翻译句子
④我从来没有想过要不辞而别。
It suddenly hit/struck/occurred to him
It never occurs to me to leave without saying.
6.Many scientists say we are now entering the Earth’s sixth mass extinction.This time,human activity will be to blame.
(Page 52)
许多科学家说,我们现在正在进入地球的第六次大灭绝。这一次,人类活动将是罪魁祸首。
★be to blame 该受责备(无需用被动形式)
It is the pedestrian,not the driver,that is to blame.
是行人而不是司机该受责备。
【合作探究】
读一读·细观察　
阅读下列句子,写出句中与blame 相关的词组和含义
①She was blamed for frequent absence from school.
词组 be blamed for
含义 因为……受责备
②It is unfair to put the blame on the girl.
词组 put the blame on sb
含义 将责任归咎于……
③She should be blamed for the failure of the system.
词组 should be blamed for
含义 应该因为……而被责备
记一记·长知识　
【即学即用】
单句语法填空
①Lots of people find it hard to get up in the morning and put the blame 　　　　　　the alarm clock.
②The man insisted that he was innocent,　　　　　(blame) that the police were not doing their duty.
③Who is 　　　　　　(blame),the system or the people involved
on
blaming
to blame
完成句子
④他把责任推给其他队员,逃脱了干系。
He got away by 　　　　　　　　　　　　　　the other team members.
⑤是你该为整个事故负责任。
It is you that 　　　　　　　　　　　　　　　　for the whole accident.
putting the blame on
are to blame/should be blamed
7.Although it is not unusual for species to die out naturally, the rate at which this is now happening is cause for concern.
(Page 52)
虽然物种的自然灭绝并不罕见,但现在灭绝的速度让人担忧。
★rate n.率,价格
What is the rate for a standard room today
今天标准间的价格是多少
【合作探究】
读一读·细观察　
阅读下列句子,写出句中与 rate 相关的词性、词组和含义
①The exchange rate between Chinese Yuan and US dollar is 7.13 for today.
词组 exchange rate　含义 汇率
②The global temperature is increasing at an alarming rate.
词组 at an alarming rate
含义 以惊人的速度
③How would you rate this movie,five or four stars
词性 动词　含义 评价;划分等级
④At any rate,the package will be delivered to you in three days.
词组 at any rate　含义 不管怎样
看一看·助记忆　
记一记·长知识　
【即学即用】
单句语法填空
①The car is running 　　　　　　a rate of 120 kilometres per hour.
②I would rate it 　　　　　　one of the best movies that I’ve ever seen.
at
as
完成句子
③过去几年出生率有所下降。
The past few years has witnessed a drop in 　 　　　　.
④这所大学因其学术研究而受到高度评价。
The university 　　　　　　　　 　for its academic research.
the birth rate
is highly rated
8.Without forests,we would have no air to breathe...(Page 53)
如果没有森林,我们就没有空气可以呼吸……
剖析 此句用without短语表示虚拟条件,主句应用虚拟语气。
I couldn’t live such a life without a good wife.
没有一个好妻子,我无法过这样的生活。
这个句式中的“without+名词”替代了一个虚拟的条件状语从句:
If I didn’t have a good wife,I couldn’t live such a life.
【合作探究】
读一读·细观察　
阅读下列句子,用without改写句子
①If there were no air,we humans couldn’t live.
We humans couldn’t live without air.
②If it hadn’t been for your help,I couldn’t have passed the exam.
I couldn’t have passed the exam without your help.
③We would be unable to survive if there were no clean water.
Without clean water we would be unable to survive.
说一说·勤归纳　
【即学即用】
单句语法填空
①Please show up at the meeting.I 　　　　　　　　　(be) terrified without you.
②I couldn’t 　　　　　　　　　　　　(achieve) it without your generous support.
would be
have achieved
完成句子
③这里一定有其他人。没有别人帮助,这个男孩子不可能算出这道题。
There must have been someone else here.The boy
　　　　　　　　　　　　　　　　　　　　without help.
④没有地球,我们没有地方居住。
We 　　　　　　　　　　　　　　　without the Earth.
couldn’t have worked out the problem
wouldn’t have a place to live
9.Experts say that it is not yet too late,if we take action now.
(Page 53)
专家们说,如果我们现在就采取行动,还为时不晚。
★take action 采取行动
Such an idea urged him to take immediate action.
念头一出,他马上行动。
【合作探究】
读一读·细观察　
阅读下列句子,写出句中表达采取行动,采取措施的词组
①We should take immediate action to deal with the problem.
词组 take action
②The government has taken measures to stop the problem from getting worse.
词组 take measures
③We need to take steps to clean up the river.
词组 take steps
看一看·助记忆　
说一说·勤归纳　
记一记·长知识　
【即学即用】
单句语法填空
①They took strong 　　　　　　　(measure) against dangerous drivers.
②Effective measures must 　　　　　　　　　　　(take) to improve the present situation.
measures
be taken
完成句子
③你要完全相信你的本能并准备好在必要的时候对他们立刻采取行动。
You need to totally trust your instincts and be prepared to
　　　　　　　 　 　　　　　　upon them if necessary.
④一个小小的善意的举动能有大不同。
　　　　　　　　　　　can make a big difference.
take immediate action
A small act of kindness