(共34张PPT)
UNIT 9 HUMAN BIOLOGY
LESSON 2 BRAIN POWER
北师大版高中英语选择性必修第三册
BRAIN POWER
ACTIVE AND SHARE
Group Work Match the words from the box with their definitions.
Activity 1
( )1 one thousand million
( )2 a part of the body that has a particular purpose,e. g. the heart
( )3 the smallest piece of something that can exist alone
( )4 a tiny part of the body that helps carry messages to and from the brain
( )5 a unit of living matter
atom nerve billion cell organ
billion
organ
atom
nerve
cell
Before listening to a lecture about the brain,read the statements
and write T (true)or F (false).
Activity 2
听力文本
Right,the topic of today’s lecture is“The Brain”. Well,the brain is an absolutely amazing organ. It consists of grey and white matter. It weighs just over a kilo—just imagine that,like a kilo of potatoes. But this is a very special kilo. It uses twenty percent of the body’s energy and it contains over one hundred billion cells.
One hundred billion cells! These make up nerve cells,which are connected by electrical impulses. The brain sends messages using electrical impulses,the same way as a computer works. But there are more possible connections in one brain than there are atoms in the universe. Just think about that again. There are more possible connections in your brain than there are atoms in the universe. Amazing,isn’t it Makes a normal computer look simple,doesn’t it
Before listening to a lecture about the brain,read the statements
and write T (true)or F (false).
Activity 2
听力文本
So,what do we know about this organ called “the brain” Scientists who study the brain have learnt a lot about it in the last ten years. Like explorers exploring the world,they’ve found that there are different areas in the brain and these areas are responsible for different functions. We now know which parts of the brain are related to different parts of our body and feelings from them. A good example of this can be seen in people who have lost an arm or a leg in an accident. Though they don’t have an arm or a leg,they can still have feelings from it,like pain. Incredible,isn’t it
You also have different areas for different kinds of thinking. For example,you have one area for your first language and another area for a foreign language that you learn when you are older. Interesting,isn’t it ...But even more interesting than locating different areas of the brain is...
Before listening to a lecture about the brain,read the statements
and write T (true)or F (false).
Activity 2
( )1 The brain consists of only white matter.
( )2 The brain weighs just over a kilo.
( )3 The brain contains about one billion cells.
( )4 The brain uses 10% of the body’s energy.
( )5 The brain sends messages in the same way as a computer works.
( )6 There are more possible connections in your brain than there are atoms in the universe.
F
T
F
F
T
T
Listen to the lecture and check your answers to Activity 2. Correct the false ones.
Activity 3
KEYS:
1 The brain consists of grey and white matter.
3 The brain contains over one hundred billion cells.
4 The brain uses 20% of the body’s energy.
Listen again. Complete the information you hear about the brain. Then tell your partner what you have learnt about the brain.
Activity 4
What matter does it consist of Grey and white matter
How much does it weigh
How much body’s energy does it use
How many cells does it contain
Just over a kilo
20%
Over one hundred billion cells
Listen again. Complete the information you hear about the brain. Then tell your partner what you have learnt about the brain.
Activity 4
How are messages sent The brain cells make up_________________,which are connected by _________________. The brain sends messages using _________________.
What have we learnt about the brain in the last ten years There are different areas in the brain,which are _______________________________. We now know which parts of the brain ________________ different parts of our ________________from them. The brain also has different areas for different kinds of ________________.You have one area for your _______________ and another area for __________________________________________________________________________.
nerve cells
electrical impulses
electrical impulses
responsible for different functions
are related to
body and feelings
thinking
first language
a foreign language
you learn when you are older
Complete the summary with the words from the lecture.
Activity 5
The brain consists of 1_________________matter. It weighs 2 _________________. It uses 3 ____________of the body’s energy. It contains over 4 _____________________ _____which make up nerve cells. These nerve cells are connected by electrical impulses. There are more possible connections in one brain than there are 5 _____________________. Scientists have mapped different areas of the brain that are responsible for 6 ______________________. There are also different areas for different types of thinking,such as learning your own language and learning a 7___________language.
grey and white
just over a kilo
20%
one hundred billion cells
atoms in the universe
different functions
foreign
Listen to a student phone-in programme and complete the table.
Activity 6
听力文本
(P = Presenter K = Professor Kim A = Anna J = John B = Bella)
P:Good morning and welcome to Healthy Living. This morning we’re here to discuss the brain. This is Professor Kim,a brain expert. Welcome,Professor.
K:Thank you for having me.
P:Let’s turn to our first caller now. Anna,
are you there What would you like to ask Professor Kim
A:Oh hi,good morning. Yes. I’ve noticed that my memory isn’t as good as it used to be,and I’ve read about brain exercises—you know,crossword puzzles,games,quizzes,that kind of thing. But do they really work Should I try them
P:What’s your advice,Professor Kim
K:Well,the answer is yes and no. Puzzles and games are good for us to keep our brain active. However,to really exercise the brain,you need to challenge it. That means doing something new,something that perhaps you are not good at. This keeps the brain flexible and helps improve memory.
P:So what kinds of activities do you suggest
K:You could try learning a new language,learning to dance or learning to paint...anything that takes you outside your comfort zone.
Listen to a student phone-in programme and complete the table.
Activity 6
听力文本
P:Great. Can we have our next caller,please Hi,John,what’s your question,please
J:Oh,hi. I’ve got some big exams coming up next month,and I was just wondering if there are certain foods that are good for the brain. What do you suggest
K:Great question. Your diet can definitely improve your brain health. If your brain has the correct fuel,it can work at its best. One thing you can do is to cut down on junk food. Foods that help the brain are natural foods:fruit,vegetables,and so on. It might also be a good idea to increase your intake of Omega-3 fats,which are an important brain food. These are found in food like oily fish and eggs.
P:Great advice. And finally,can we hear from Bella
B:Oh,hello. My question is about physical exercise. Is there any particular kind of exercise that can improve the health of my brain What should I do
K:I advise you to do exercise that is good for your heart,such as walking and running. These kinds of exercise increase the amount of oxygen in the blood,which is also good for the brain.
P:Fascinating stuff. Join us after the break...
Listen to a student phone-in programme and complete the table.
Activity 6
What problem do they have What can they do
Anna:Memory isn’t as good as it used to be,so do brain exercises really work
challenge their brain with learning new things they are not good at
Listen to a student phone-in programme and complete the table.
Activity 6
What problem do they have What can they do
20%
John:Exams are coming up,so he wonders if there are certain foods that are good for the brain.
cut down on junk food,increase the intake of Omega-3 fats
Listen to a student phone-in programme and complete the table.
Activity 6
What problem do they have What can they do
Bella:Is there any particular kind of exercise that can improve the health of her brain
do exercise that is good for the h e a r t ,such as w a l k i n g
a n d running
Listen and plete the Talk Builder.
Asking for and Giving Advice
Asking for Advice
1 try them
2 ,Professor Kim
3 So what kinds of activities
4 Is there any particular kind of exercise...
Giving Advice
1 try learning a new language...
2 is to cut down on junk food.
3 _______________increase your in take of...
4 do exercise that is good for your heart.
Activity 7
Talk Builder
Should I
What’s your advice
do you suggest
What should I do
You could
One thing you can do
It might also be a good idea to
I advise you to
SPEAK
Search online in groups for more ways to increase brain power. Then give a short presentation to the class.
Activity 8
Language points
教材原句p.110 ...it contains over one hundred billion cells. ……它(大脑)包含超过1 000 亿个细胞。
1 contain vt. 包含,容纳,装盛
The book contains all the information you need.
这本书包含你需要的所有信息。
How much does the bottle contain
这个瓶子的容量是多少?
The research group produced two reports based on the survey,but neither contained any useful suggestion. 研究小组根据调查结果写了两份报告,但都没有包含任何有用的建议。
【学法点拨】
contain 还可以译为“抑制,克制(强烈的感情)”。
Hearing the news,he couldn’t contain himself and burst into laughter.
听到这个消息他难以克制,放声大笑起来。
核心词汇
题组练·领悟方法
【词语辨析】contain与 include
A contains B (=B is inside A)B 在A 里面
A includes B (=B is part of A)B 是A 的一部分
选词填空(contain/include)
(1) The rocket a number of scientific instruments, a television camera.
(2) Several cities competed to host the 32nd Olympic Games,Tokyo .
(3) The price doesn’t postage.
(4) Our ten-day tour a visit to New York.
单句语法填空
(5)[词汇复现]The employer will send five workers to work in the branch in Shanghai, _____________(include)my brother.
(6) When hearing the news that his father came to himself,he couldn’t contain (he)and burst into tears.
(7) I hope more useful information (contain)in your report.
contains
including
included
include
includes
including
himself
is contained
教材原句p.110 But even more interesting than locating dierent areas of the brain is... 但比定位大脑不同区域更有趣的是……
2 locate vt. 找出……的准确位置
搭配:be located in/on/at... 位于……,坐落在……
The mechanic located the fault immediately.
机修工立即找到了出故障的地方。[词汇复现]
Located on the banks of the river,the city is famous for its scenery and attracts a number of visitors.
这座城市位于河畔,以风景闻名并吸引了许多游客。
【词语积累】
location n. 位置;地点;(电影的)外景拍摄地
单句语法填空
(1) He will work in the workshop that (locate)at the foot of the mountain,which worries his mother.
(2) The exhibition will be held in the City Museum, (locate)in the north of our city.
(3) Make sure that the (locate) service is turned on,just in case you get lost.
is located
located
location
教材原句p.111 If your brain has the correct fuel,it can work at its best. 如果你的大脑能获得正确的养料,它就能保持最佳工作状态。
3 at one’s best 处在最好状态;全盛时期
One should never be proud even when he is at his best. 一个人在最得意时也绝不应骄傲。
【归纳拓展】
do/try one’s best(at)(在某一方面)尽全力
make the best of 充分利用;尽力而为;妥善处理
best of all 最好的是
We must make the best of every minute to build the fence in case the goats slip out. 我们必须抓紧每一分钟把篱笆盖好,以防山羊溜出来。[词汇复现]
He did his best to run faster,but he failed.
他尽最大努力跑得更快,但还是失败了。
完成句子
(1) When I’m tired,I’m (没在我最好的状态).
(2) The store also has second-hand books and CDs/DVDs with the idea____________________ (充分利用)the used things.
单句语法填空
(3)[词汇复现]The photographer was never her best early in the morning.
(4)[词汇复现]A man is bound to be successful if only he will do best.
not at my best
to make the best of
at
his
教材原句p.111 One thing you can do is to cut down on junk food. 你能做的一件事就是少吃垃圾食品。
4 cut down on 削减,减少
They understand it’s a good offer and they cut down on the calories.
他们明白这是个好提议,减少了热量的摄入。
【归纳拓展】 cut down 削减;砍倒 cut away 剪去;切除;砍掉
cut out 裁剪;删除 cut up 切碎
cut off 切掉;阻碍;中断 cut in 插嘴;插队
cut through/across 抄近路穿过
I am not able to persuade my uncle to give up smoking,but at least he has cut down. 我没能说服我叔叔戒烟,但至少他减少了。[词汇复现]
The butcher cut off a piece of meat and cut it up for the chef to make dumplings. 屠夫切下一块肉,将它切碎,让厨师包饺子。[词汇复现]
单句语法填空
(1)[词汇复现]Sadly,despite the warning,there are still many trees being cut .
(2) The electricity was cut for several days.
(3) Please cut the vegetables into small pieces.
完成句子
(4) As far as I am concerned,you should (减少)the fat you take in every day.
(5)[词汇复现]After retirement,I feel I have been (与外界隔绝)for ages.
(6)[词汇复现]We were talking about the general tendency of the world economy when Tim _____________(插话).
down
off
up
cut down on
cut off
cut in
教材原句p.111 It might also be a good idea to increase your intake of Omega-3 fats... 增加你的欧米加3 脂肪的摄入量可能也是个好主意……
5 intake n. 摄入量,摄取量
high fluid intake 高流质摄取量
to reduce your daily intake of salt 减少每天的食盐摄入量
the annual student intake 每年招收的新生人数
a sharp intake of breath 猛吸一口气
【归纳拓展】
take in 吸收;领会;欺骗;接待
完成句子
(1) Your (酒精摄入量)should not exceed two units per day.
单句语法填空
(2) She is one of this year’s intake students.
intake of alcohol
of
教材原句p.56 The brain cells make up nerve cells... 脑细胞组成了神经细胞……
6 make up
(1)组成,构成(被动式:be made up of)
Ten members chosen by the employer make up the research team.
= The research team is made up of ten members chosen by the employer. 由老板选出的十个人组成了研究小组。[词汇复现]
(2)创作,编写;编造(故事、谎言等)
The company was fined because they had made up false information.
该公司被罚款,因为他们编造虚假信息。
(3)化妆,上妆
She spent two hours making herself up before the party.
她在参加聚会前花了两个小时化妆。
(4)补上(失去的东西);作出补偿
I’m trying to make up the time I lost while I was sick.
我正在努力补回我生病耽误的时间。
(5)和好,(与某人)言归于好
Have you made up with Patty yet 你跟帕蒂和好了吗?
【归纳拓展】
make up for 弥补,补偿
Her hard work makes up for her lack of intelligence.
她的勤奋弥补了她的不聪明。[词汇复现]
写出句中make up 的含义
(1)We have made up and become best friends again. —————
(2) The actors were making up in the next room. ————
(3) Everyone in the village likes Jack because he is good at telling and making up jokes. ———
(4) Boys make up 56% of the students’ number. ————————
(5) The famous singer made up a song about friendship. ————
(6) Since we entered Senior Three,the boy has studied even harder to make up the time he wasted in the past.
和好
化妆
编造
组成,构成
创作
补上
完成句子
(7) The book (由…… 组成)a number of different articles.
(8) Caroline doesn’t have a gift for music,but she (弥补)it with hard work.
(9)[词汇复现]Five specialists (组成)this medical team to treat the hero for his illness.
is made up of
makes up for
make up/made up
THE END