北师大版（2019）选择性必修第一册Unit 3 Conservation Lesson 1 The Sixth Extinction 知识点 课件(共24张PPT)

(共24张PPT)
Unit 3 Lesson One
Language points
die out
消失；绝迹；灭绝
① This species has nearly died out because its habitat is being destroyed.
② To our sadness, many old customs are gradually dying out.
③As the sound of the music died away, the film came to an end.
④ In big cities during cold winter months, many old people die from the polluted air.
⑤ Although the wind has died down, the rain remains steady, so you still need a raincoat.
⑥ She was dying for a break having worked so hard for so long a time.
⑦ Shanghai was a new world to me and I was dying to find out more about it.
die away 逐渐减弱;渐渐消失
die from/of 死于……
die down 逐渐减弱;渐渐消失
be dying for… 渴望得到…
be dying to do sth 渴望做某事
用die的相关短语完成句子
①With more and more birds ___________， some day some species will _______. In addition, some of them have ___________ environmental pollution.
②Don't worry. The strong wind will ______________ soon and we can go out to have a baseball match as planned.
③Now I'm thirsty and _________ a glass of water. I have walked for a long time.
dying off
die out
die from/of
die down/away
dying for
species
/ spi i z/
n. 物种
① This species has nearly died out because its habitat is being destroyed.
② Many of these species have died out or are facing extinction.
wipe
/wa p/
v. 擦；拭
① He wiped his tears with a handkerchief.
② The disease threatens to wipe out the entire population.
wipe out 彻底消灭;完全摧毁
unusual
/ n ju u l/
adj. 异常的；不平常的
① It's not unusual for him to feel very angry in a situation like this.
usual adj. 通常的;惯常的
② It is unusual that the rain suddenly falls today, but he still goes running in the park as usual. He usually says, “Once you have got into the habit of exercising, you will stick to it.”
It is unusual for sb. to do sth.　　　做某事对某人来说是不寻常的
as usual 像往常一样
mass
/m s/
adj. 大量的
① These include the third mass extinction, known as the “Great Dying”， which killed 90% to 96% of all species.
② There is a mass of snow and rocks falling down the mountain
n. 堆；团；块
③ There were masses of children playing in the yard.
a mass of/ masses of 大量的
varied
/ ve rid/
adj. 各种各样的；形形色色的
e.g. It is essential that your diet is varied and balanced.
vary v. 变化
various adj. 各种各样的
variety n. 种类
① Generally speaking, prices of fruit and vegetables vary with the seasons.
② Rooms vary in size and some are equipped with televisions and telephones.
③ The original Cinderella varies very much from the Disney version we know today.
④ There are varieties of books for us to choose from, like history books, science books, literary books and so on.
vary with 随…变化
vary in 在某方面变化
vary from A to B
a variety of / varieties of
Practice
(1) In these open spaces are numerous plants in 　　　　 　 stages of growth that attract a 　 of other plant-eaters.(vary)
(2) If you come to visit China，you will experience a culture of amazing depth and _________(vary).
(3) There 　　　　(be) different varieties of plants in the garden.
(4) With its 　　　　　　　(多变的气候)the country attracts both winter and summer sports enthusiasts.
(5) The newspaper China Daily supplies us with 　　　　　(各种各样的) news every day.
ADD YOUR TITLE HERE
various
variety
variety
were
varied climate
a variety of
asteroid
/ st r d/
n. 小行星
e.g. An asteroid is any one of the many small planets which go around the sun.
decrease
/d kri s/
vt. 减少
① They are making every effort to decrease the production cost.
② The production of the cotton this year is on the decrease, and compared with that of last year, it has decreased by 20%, but the price has increased by 30%.
vi. 减少
on the decrease 在减少
increase by 增加了……
③ The number of new students decreased from 210 to 160 this year.
decrease by 减少了……
n. 减少
decrease to 减少到……
blame
/ble m/
v. 责怪，指责
e.g. We tend to blame TV, he says, for problems it doesn't really cause, overlooking our own roles in shaping children ’s minds.
② Health experts put/lay/place the blame for the spread of the disease on poor housing conditions.
③ We human beings are supposed to take the blame for extinct or endangered species，so we must do our part in wildlife conservation.
① He is blamed for the big mistake, but he blamed it on others. In fact, it is he, not others, that is to blame for it.
blame sb for… 因…责备某人
blame sth on sb 把某事归咎于某人
Sb be to blame 某人应受到责备
Sb be to blame for 某人应为某事受到责备
take the blame for 承担某事的责任
put/lay/place the blame for sth on sb 把某事的责任归咎于某人
① Some people blame the smartphone ________ the tragedy, yet in fact people's weakening self -control and self -discipline are _______ (blame).
② Lots of people find it hard to get up in the morning, and put the blame ________the alarm clock.
③ (话题写作之人际交往)当和其他人相处时，我们不应该总是因错误而指责其他人。毕竟，很多时候我们也应该受到责备。因此，我们应该多交流、换位思考，而不仅仅是把错误归咎于其他人。
When getting along with others, we shouldn’t always______________________.
After all, many times ________________________________________.
So instead of _____________________________________ _，we should communicate more and put ourselves in others’ place.
for
to blame
on
blame others for some mistakes
we are to blame
blaming mistakes on others
/putting the blame for mistakes on others
affect
/ fekt/
v. 影响
① It is clear that human activity has negatively affected all other species on Earth, including animals and plants.
② He was deeply affected by the music.
③ The disease is beginning to affect her brain.
v. 感染，感动
v. 感染，侵袭
④ Every mother has deep affection for her child.
n. 喜爱
① It is certain that people’s views on happiness ______ __ (affect) greatly by their own life experience.
② When I make a business decision, it comes naturally for my decision to be made in the common interest of all involved because every day I see the people ______ __(affect) by my decision — my neighbors, my customers, and my employees as well as the natural world.
③　　　 　　 by a high school biology teacher, he took up the study of medicine. (influence)
④What parents say and do has a lifelong effect their children.
are affected
affected
Influenced
on
be at risk
处境危险；受到威胁
e.g. Of course, as we humans depend on so many species for our survival, we would also be at risk of dying out.
② If you risk not wearing seat belt, you will be at risk.
③ In spite of great danger, the soldier jumped into the river and risked his life to save the girl/took the risk of losing his life to save the girl
① He got well prepared for the job interview, for he couldn’t risk losing this good opportunity.
risk doing sth 冒风险做某事
at risk (of) 处于风险之中
risk one’s life to do sth 冒生命危险做某事
take a risk of doing sth 冒…风险
④ Though it is fun to play on the frozen river, it is risky.
risky adj.有风险的
endangered
/ n de nd d/
adj. 濒危的
① This financial profit can help nations protect the habitats where endangered danger animals and plants live.
② That one mistake seriously endangered the future of the company.
endanger v. 使处于危境；危及
solar
/ s l (r)/
adj. 太阳光（能）的
e.g. Without sunshine, there is no solar energy.
hatch
/h t /
v. （使）孵化
e.g. The female animal must find a warm place to hatch her eggs.
restore
/r st (r)/
v. （使）恢复
① The measures are intended to restore public confidence in the economy.
② Her job is restoring old paintings.
v. 修复