資源簡介

(共39張PPT)
Unit 4
Life on Mars
Period 2
Reading
1.學習目標
3.重點探究
2.自主學習
學習導航
5.當堂檢測
6.課堂總結
4.拓展提升
新課導入
Video about living on Mars
1.能熟悉并正確運用本課時的重點單詞和短語。
2.能了解22世紀在火星上生活可能的樣子。
學習目標
自主學習
New words
planet
crowded
polluted
rapid
increase
passenger
uncomfortable
n. 行星
adj. 擁擠的
adj. 被污染的
adj. 快的，迅速的
n. 增加
n. 乘客
adj. 使人不舒服的；不舒適的
oxygen
tasty
specially
float
compare
interplanetary
network
n. 氧氣
adj. 味道好的
adv. 專門地，特地
vi. 飄浮；漂浮
vt. & vi. 比較
adj. 行星間的
n. 網絡
New phrases
(all) over again
at a/the speed of
in the form of
compare to/with
再；重新
以……的速度
以……的形式
與……相比
challenging
rapidly
adj. 挑戰性的
adv. 快地，快速地
New words
重點探究
Brainstorming
Life on Mars
transport
clothes
food
home
school
…
What would life be like on Mars
A. Daniel wants to find out more about life in space in the future. He has found the following article by a famous scientist who thinks humans could live on Mars by the next century.
Moving to Mars
Some people believe that humans could live on the planet Mars by the year 2100. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. It is hoped that people could start all over again and build a better world on Mars. Here is what life there could be like.
At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months. With the development of technology, by the year 2100, the journey might only take about 20 minutes in spacecraft that travel at the speed of light! However, the spacecraft would travel so fast that the journey to Mars might be quite uncomfortable. Many people would feel ill.
Humans cannot survive without water, oxygen or food. So far, nobody knows whether there would be enough water or oxygen on Mars for people there. Moreover, scientists are not sure whether plants could grow on Mars. Food would most probably be in the form of pills and would not be so tasty.
Gravity could be another problem. The gravity on Mars is only about three-eighths of that on the Earth. People would have to wear boots that are specially designed to prevent themselves from floating off into space.
Compared with life on the Earth, life on Mars would be better in some ways. People would have more space. They might live in houses with huge comfortable rooms. Also, robots would do most of their work so that they could have more time to relax.
There would probably be no schools on Mars. Every student would have a computer at home connected to an interplanetary network. They would study at online schools with “e-teachers”.
Life on Mars would be interesting as well as challenging.
Fast reading
Match the main idea of each paragraph.
Transport
Food
Gravity
Home
School
Para. 2
Para. 3
Para. 4
Para. 5
Para. 6
Conclusion
Introduction
Para. 1
Para. 7
Detailed reading
1. When could we live on the planet Mars
2. Why do we need to move to Mars
Read Para. 1 and answer the questions below.
By the year 2100.
Because our own planet, the Earth, is becoming more and more crowded and polluted.
Read Para. 2 and fill in the blanks.
1. At present our spacecraft are too s________ to c________
large numbers of passengers.
2. With the development of technology, the spacecraft can
travel at the speed of l_________.
3. The journey to Mars might only take about 20 m________.
How can we get to the Mars
ight
low
arry
inutes
Transport
1. Nobody knows whether there would be enough w_________
or o__________ on Mars.
2.Scientists are not sure whether p________ will grow on Mars.
3. Food would most probably be in the form of p_________.
ater
xygen
lants
Food
What should we eat on Mars
ills
Read Para. 3 and fill in the blanks.
1. There is less ________on Mars than on Earth.
2. We could jump e and f into space.
3. Humans have to wear s boots to make themselves heavier.
4. The boots are s_______ designed to p______ themselves from
f_______ off into space.
What should we wear on Mars
asily
loat
pecial
gravity
revent
pecially
loating
Gravity
Read Para. 4 and fill in the blanks.
Read Paragraphs 5-6 and fill in the blanks.
1. People will have ________ space.
2. ________ will do most of our work.
3. We’ll have more time to ________.
4. Students will study at ________ schools.
more
Robots
relax
online
Read Para. 7 and answer the question below.
How does the writer find the life on Mars
He thinks it would be interesting as well as challenging.
B1. Daniel needs to check the meanings of some words in the article. Help him match the words on the left with the meanings on the right. Write the correct letters in the blanks.
1 crowded
2 rapid
3 population
4 all over again
5 passenger
6 tasty
7 specially
8 compare
_____
_____
_____
_____
_____
_____
_____
_____
f
h
d
g
b
e
a for one purpose
b a second time from the beginning
c decide in what way things are similar or different
d having a nice taste
e full of people
f happening in a short period of time
g a person who rides in a car, bus, train, etc. but does not drive it
h the total number of people in an area, a country, etc.
a
c
B2. Daniel is looking for more information on the Internet. Below are the keywords he used and the links he got from the search engine. Match the keywords with the links. Write the correct letters in the blanks.
crowded planet
space houses
spacecraft
robot on Mars
speed boots
online teacher
______
______
______
______
______
______
1
2
3
4
5
6
a Need someone to teach you any time, any place
b Living in a space house is fun ....
c All about the newest spacecraft that travel in space ....
d Our shoes can make you walk faster!
e Robots could be of great help to people on Mars ....
f The population on the Earth is still increasing rapidly ....
a
b
c
e
d
f
B3. Daniel is telling Simon about the article. Simon is very interested and is asking many questions. Help Daniel answer Simon's questions. Circle the correct letters.
1 Why would people move to Mars
a The Earth is crowded and polluted.
b People want to make friends with
those from another planet.
c Flying to Mars would be fun.
2 How long does it take to fly to Mars
at present
a Hours.
b Months.
c Years.
3 What would the flight to Mars be
like by the year 2100
a Fast and comfortable.
b Fast but uncomfortable.
c Slow but comfortable.
4 What would food on Mars be like
a Very tasty.
b Very sweet.
c Not very tasty.
5 Would gravity be a problem on Mars
a No, it's not a problem.
b Yes. Many people would get lost.
c Yes, and people would wear
special boots.
6 Where might people live on Mars
a In houses with huge rooms.
b On spacecraft.
c In sleeping bags.
7 What would schools be like on Mars
a Very small.
b Online schools.
c Like those on the Earth.
8 What does the writer think of life on Mars
a Better than life on the Earth.
b Worse than life on the Earth.
c There would be good and bad points.
B4. Daniel is making a list of the differences between life on the Earth today and life on Mars in 2100. Help him complete his list. Use the information from the article on pages 52 and 53.
Life on the Earth today Life on Mars in 2100
It is polluted and crowded. It would be clean and have lots of space.
Spacecraft are slow.
There is enough water and oxygen.
There are many kinds of tasty food.
Gravity is not a problem for us.
Many people live in small flats.
People have little time to relax.
Students study at real schools.
Spacecraft would travel at the speed of light.
There would not be enough water or oxygen.
Food would most probably be in the form of pills and would not be so tasty.
The gravity is only about three-eighths of that on the Earth.
People might live in houses with huge comfortable rooms.
People could have more time to relax.
Students would study at online schools with “e-teachers”.
Show time
Retell the article.
拓展提升
Language Points
1. It is hoped that people could start all over again and build a better world on Mars. 人們有望能夠在火星上重新開始，建設一個更好的世界。
句型 It is hoped that…表示“……可以指望”，指說話者希望如此。
e.g. It is hoped that we can finish the project before this weekend.
我們希望在本周前完成此項目。
(all) over again 再；重新
e.g. We lose the house, we sell our cars, and we start all over again.
我們失去了房子，賣掉了汽車，然后重新開始。
2. Here is what life there could be like.
這里描述的是那里的生活可能會是什么樣子。
句中what life there could be like作謂語動詞is的表語。
e.g. Large numbers of/A large number of people go travelling during the National Day holiday. 很多人在國慶假期去旅游。
句中的large numbers of表示“大量的”，也可以說a large number of。
3. At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months. 目前，我們的宇宙飛船太慢了，無法運送大批的乘客火星—因為要花幾個月的時間。
4. With the development of technology, by the year 2100, the journey might only take about 20 minutes in spacecraft that travel at the speed of light! 隨著技術的發展，到2100 年，乘坐以光速飛行的宇宙飛船，行程或許只要大約20分鐘！
短語 at a/the speed of的意思是“以……的速度”。
e.g. The car is moving at the speed of 100 kilometres per hour.
小汽車正以每小時100公里的速度行駛。
5. Food would most probably be in the form of pills and would not be so tasty. 食物很大可能會以藥片的形式存在，而且味道沒那么可口。
句中的in the form of 的意思是 “以……的形式”。
e.g. Help in the form of money will be welcome.
歡迎以錢的形式資助。
在表示分數時, 分子用基數詞, 分母用序數詞。分子如果大于1,分母須用復數形式。分子、分母之間有無連字符均可。
e.g. Nearly one-fourth of the world's people live in these areas.
世界上近四分之一的人口居住在這些地區。
About three-fourths of the Earth's surface is covered with water.
地球表面大約四分之三被水覆蓋。
6. The gravity on Mars is only about three-eighths of that on the Earth. 火星上的重力大約只有地球上的八分之三。
在做比較時，我們常用that/those指代句中類似相同的那一部分。通常that用于指代可數名詞單數或者不可數名詞，those用于指代可數名詞復數。此句中的that指代前面的gravity。
e.g. The air on Mars is much thinner than that on the Earth.
火星上的空氣要比地球上的稀薄很多。
The days in summer are longer than those in winter.
夏天的白天比冬天的長。
7. Compared with life on the Earth, life on Mars would be better in some ways. 與在地球上的生活相比, 火星上的生活在有些方面將會更好些。
過去分詞短語compared with life on the Earth在句中作狀語。compare with … 意思是“ 與……做比較”， 此時with和to可通用。
e.g. This road is quite busy compared with ours.
與我們的那條路相比，這條路繁忙得多。
8. Every student would have a computer at home connected to an interplanetary network. 每個學生家里都有一臺電腦與星際網絡連接。
過去分詞短語connected to an interplanetary network在句中作定語，修飾前面的computer。connect to 意思是“與……連接”。connect … to … 表示“把…… 和……連接起來 ”。
e.g. Sam wants to connect the mouse to the computer.
山姆想把鼠標和電腦連接起來。
9. Life on Mars would be interesting as well as challenging.
火星上的生活，不僅有挑戰性，還很有趣。
短語as well as 的意思是“不但……而且，既……又”。注意這一短語在翻譯成中文時，應先as well as 后面的內容，再翻譯前面的。
e.g. They visited the museum as well as the zoo.
他們不但參觀了動物園, 還參觀了博物館。
當堂檢測
一、根據句意及提示完成下列句子。
1. Without __________ (氧氣), the brain is damaged quickly.
2. The disease is spreading at a __________ (迅速的) rate.
3. They may be able to make __________ (味道好的) food.
4. This is a secure __________ (網絡).
5. Mike found a __________ (挑戰性的) job as a computer programmer.
oxygen
rapid
tasty
network
challenging
二、翻譯下列句子。
1. 每年冬天都有大量的鳥飛往南方。
________ ________ ________ birds fly to the south every winter.
2. 該流星群速度可達每秒66公里。
The shooting stars are falling _______ _______ _______ _______ 66 km
per second.
3. 以錢的形式資助將十分受歡迎。
Help _______ _______ _______ _______ money will be very welcome.
4. 整個過程又重新開始了。
The whole process started _______ _______ _______.
5. 他演奏流行音樂和爵士樂，同時也演奏古典音樂。
He plays classical music, _______ _______ _______ pop and jazz.
Large numbers of
at a speed of
in the form of
all over again
as well as
課堂總結
Unit 4
Period 2
重點單詞及短語：
planet, crowded, polluted, rapid, increase, passenger, uncomfortable, oxygen, tasty, specially, float, compare, interplanetary, network, challenging, rapidly, (all) over again, at a/the speed of, in the form of, compare to/with
22世紀在火星上生活可能的樣子：
一些人認為到2100年，人們能夠到火星上生活，在火星上的生活可能是以下這樣的。1.交通：以_______速_______分鐘到火星；2.食物：以______形式，不會好吃；3.引力：特別設計的______；4.住宿：有大而舒適的房間的房子；5.教育：________學校。
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