Unit 4 Life on Mars
Reading（1）课件(共25张PPT及音频)
New words and expressions.
planet n. 行星
crowded adj. 拥挤的
polluted adj. 被污染的
rapid adj. 快的，迅速的
increase n. 增加
(all) over again 再；重新
passenger n. 乘客
at a/the speed of 以……的速度
uncomfortable adj. 使人不舒服的；不舒适的
oxygen n. 氧气
in the form of 以……的形式
tasty adj. 味道好的
specially adv. 专门地，特地
float vi. 飘浮；漂浮
compare vt.&vi. 比较
compare to/with 与……相比
interplanetary adj. 行星间的
network n. 网络
challenging adj. 挑战性的
rapidly adv. 快地，迅速地
情景导入
So the earth is becoming
more and more crowded
(拥挤的) and polluted (污染的).
There are large numbers
of people on Earth.
Problems on the Earth
because of the rapid increase in population
人口的快速增长
So we hope we can build a better world on.
Mars
Moving to Mars
Task 1 Skimming
Go through the passage quickly and find out the answers:
1. What is the passage talking about
2. Why is the Earth becoming more and more crowded and polluted
Moving to Mars.
Because of the rapid increase in population.
Task 2 careful reading
Para 2 The speed of spacecraft
( transport)
Spacecraft have some differences between now and in the future.
At present Our spacecraft are too s___ to c_____ large numbers of p_________. It would take _______.
By the year 2100 With the development of technology, the spacecraft can travel at the speed of l______. We may feel u_____________and i___. The journey to Mars might only take 20 m______.
low
arry
assengers
months
ight
ncomfortable
ll
inutes
Para 3 the problems of food, water and air
T or F
1. Humans can survive without water, oxygen or food.
2. Scientists are sure whether plants will grow on Mars.
3. Food would most probably be in the form of pills and would not be so tasty.
can't
aren't
F
F
T
Para 4 Gravity
1. What about the gravity on Mars
2. Why do people have to wear boots on Mars
The gravity on Mars is only about three-eighths of that on the Earth.
Because they can prevent people from floating off into the space.
Para 5 Home
Where might people live on Mars
A. In houses with huge comfortable rooms.
B. On spacecraft.
C. In sleeping bags.
Para 6 Students' future study
At online schools on Mars
There would be no schools.
Students would study with computers at home.
The computer would be connected to an
interplanetary network.
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. Spacecraft would travel ____________________.
Gravity is not a problem for us. Only about _________________ ____________on Earth.
We can wear many types of shoes. People wear ______________.
at the speed of light.
three-eighths of the gravity
special boots
Task 3 Compare the differences
Life on the Earth today Life on Mars in 2100
Many people live in small flats. People live in ______________
__________________.
We study at real school. Students study at _____________ with ___________.
There are many kinds of tasty food. Meals are just ________________.
houses with huge
comfortable rooms
online schools
“ e - teachers”
in the form of pills
Task 3 Compare the differences
Match the words and the meaning
____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 tasty
____e full of people
____f happening in a short period of time
____g a person rides in a car, bus, train, etc. but does
not drive it
____h the total number of people in an area, a country, etc.
crowded
all over again
rapid
passenger
population
tasty
specially
compare
e
f
h
b
g
d
a
c
B1
1. Why do we need to move to Mars
A. Earth is crowded and polluted.
B. people want to make friends with those from another planet.
C. Flying to Mars will be fun.
Life in the future
B3
2. How long does it take to fly to Mars at present
A. Hours. B. Months. C. Years.
3. What will the flight to Mars be like by the year 2100
A. Fast and comfortable.
B. Fast and uncomfortable.
C. Slow and comfortable.
4.What will food be like on Mars
A. Very tasty. B. Very sweet.
C. Not very tasty.
5. Would gravity be a big problem on Mars
A . No, it’s not a problem.
B . Yes, many people will get lost .
C . Yes, and people would wear special boots.
6. Where might people live on Mars
A. In houses with huge rooms. B. Our spacecraft.
C. In sleeping bags
7. What would schools would be like on Mars
A. Very small. B. Online schools.
C. Like those on earth.
8. What does the writer think of life on Mars
A. Better than life on earth
B. worse than life on earth
C. There would be good and bad points.
Which planet would you like to live on, Earth or Mars Why
Discussion
I would like to live on ... because...
Protect our own planet Earth
Some suggestions:
1. We can plant more trees and flowers.
2. Pick up the rubbish and throw it into the rubbish bin.
3. Save water, power and other useful resources.
Have a low carbon life.
课后作业
1. Read the article aloud more often.
2. Search the Internet for more information about life on Mars.
3. Finish off the exercises on the teaching and learning paper.
GOOD JOB
