内容正文:
Unit 4 Life on Mars
Reading
Free talk
Do you believe humans can live on Mars in the future?
Can you guess what life on Mars would be like?
Fast-reading
Find out the main idea of each paragraph.
R_______ for moving to Mars
J_________
F_________
G_________
S_______ & work
S_________
C_________
easons
ourney
ood
ravity
pace
chools
onclusion
Careful-reading (para.1)
When may humans live on Mars?
By the year 2100.
Why do people want to move to Mars?
Because the Earth is becoming more and more crowded and polluted.
Careful-reading (para.2)
Journey to Mars
At present By the year 2100
Time months only ______ minutes
Speed slow at the speed of ______
Feeling / quite __________
feel ______
20
light
uncomfortable
ill
Careful-reading (para.3-4)
food
gravity
in the form of ______
not so ______
only about ______________ of that on the Earth
boots are ________ designed
pills
tasty
three-eighths
specially
Careful-reading (para.5-6)
space
work
schools
live in houses with _______ __________________
_______ would do most of the work
study at _______ schools with “__________”
huge
comfortable rooms
robots
online
e-teachers
Careful-reading (para.7)
Life on Mars would be __________ as well as __________.
interesting
challenging
Challenging
journey
food
gravity
fast
?
spacecraft
uncomfortable
in the form of pills
not tasty
3/8 of that on the earth
wear special boots to …
interesting
space
work
school
houses with huge comfortable rooms
robots…so that…
online schools
with “e-teachers”
Where would you prefer to live, on Mars or on the Earth? Why?
Discussion
B1
b
f
h
g
e
d
a
c
B2
e
d
b
a
c
B3
B4
Earth today Mars in 2100
It is polluted and crowded.
Spacecraft are slow.
There is enough water and oxygen.
It would be clean and have lots of space.
Spacecraft would travel at the speed of light.
There might not be enough water or oxygen.
Earth today Mars in 2100
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.
Food would most probably be in the form of pills and would not be so tasty.
People would have to wear special boots.
People might live in houses with huge comfortable rooms.
People could have more time to relax.
Students would study at online schools.
Language points
1. The Earth is more and more crowded and polluted.
pollute v. polluted adj. pollution n.
The ____________ on the earth is serious. Many places are very _________. We should stop __________ our planet.
pollution
polluted
polluting
2. Our spacecraft are too slow to carry large numbers of passengers to Mars.
On National Day holidays, there are always _______________ tourists at some hot places and they produce _______________ rubbish. That’s really terrible.
a great deal of
Language points
a large number of + 可数名词复数
a great deal of + 不可数名词
= a large number of
large numbers of / a large number of
3. It would most probably be in the form of pills.
The rocks were formed about four million years ago.
He had a rare form of cancer.
All you need to do is complete this form.
They still keep in touch with each other in the form of letters.
使形成
形式
表格
形式
Language points
form ①n.形式 in the form of…
②n.表格 fill in a form
③v.(使)形成
4. The gravity on Mars is only about three-eighths of that on the Earth.
e.g. 1/5: one-fifth 2/5: two-fifths
注意:1/2: a half 1/4: a quarter 3/4: three quarters
__________(2/3) of the students in this school ______ (be) girls.
______________(3/4) of the earth surface _______ (be) covered with water.
Two thirds
Three quarters
are
is
Language points
5. Compared with life on the Earth, life on Mars would be better in some ways.
Language points
compare… with/to… 把……和……相比
→be compared with/to… 与……相比
本课的目的是比较这两个国家。
The point of the lesson ____________________________.
我们仔细比较了第一份报告和第二份报告。
We _________________ the first report _____ the second.
与别人的问题相比,我自己的问题算不得什么。
My own problems seem unimportant ________________ _______________.
is to compare the two countries
compared with
other people's
carefully compared
with
5. Compared with life on the Earth, life on Mars would be better in some ways.
Language points
过去分词作状语,相当于If life on Mars is compared with life on the Earth。
这个男孩溜出了房间,后面跟着他的宠物狗。
The boy slipped out of the room, ____________________.
从山顶往下看,这座城镇看起来更加漂亮。
______________________________, the town looks more beautiful.
如果给我更多的时间,我就能更好地完成我的报告。
_______________, I'll be able to finish my report better.
followed by his pet dog
Given more time
Seen from the top of the mountain
6. Every student would have a computer at home connected to an interplanetary network.
过去分词作后置定语
Language points
穿白色衣服的学生是我的女儿。
The student dressed in white is my daughter.
这是互联网上找到的最有趣的新闻。
This is the funniest news ____________________.
昨晚受邀参加你们聚会的客人是谁?
Who were the guests __________________ last night?
found on the Internet
invited to your party
单击此处编辑母版文本样式
第二级
第三级
第四级
第五级
Words & phrases
行星 n.
氧气 n.
重力 n.
有挑战性的 adj.
味道好的 adj.
快地,迅速地 adv.
planet
oxygen
gravity
challenging
tasty
rapidly
Words & phrases
到2100年为止
越来越拥挤和污染
人口的快速增长
有望……
从头再来
运送大量乘客
随着技术的发展
乘宇宙飞船
by the year 2100
more and more crowded and polluted
the rapid increase in population
It is hoped that…
start (all) over again
carry large numbers of passengers
with the development of technology
in spacecraft
Words & phrases
以光的速度
感到不舒服
以……的形式
是……的八分之三
被专门设计来……
飘离到太空中
把……和……相比
星际网络
at the speed of light
feel ill
in the form of…
be three-eighths of…
be specially designed to…
float off into space
compare… with…
an interplanetary network
Finish off exercises at page 54-55.
Read the passage and try to retell it in your own words.
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