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牛津译林版英语九年级下册
Unit4 Life on Mars第三课时教学设计
课题 Life on Mars 单元 Unit 4 学科 English 年级 9
学习目标 Knowledge aims: To learn some new words , expressions and sentences in the article.Ability aims: To discuss life on Mars with the words ,expressions and sentences in the articleEmotional aims: To love the nature and treasure our globe
重点 To learn some new words ,expressions and sentences
难点 To learn some new words ,expressions and sentences
教学过程
教学环节 教师活动 学生活动 设计意图
导入新课 一、Review some words we have learned in this unit before. Review some words 巩固词汇知识
讲授新课 一、Read the passage and learn some new words and expressionsPlanet polluted rapid all over again passengers at the speed of uncomfortablein the form of oxygen tasty floating specially Compared with so that interplanetary network challenging 二、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.crowded a. for one purposerapid b. a second time from the beginningpopulation c. Decide in what way things are similar or difficultall over again d. having a nice tastepassenger e. full of peopletasty f. happening in a short period of the timespecially g. a person who rides in a car, bus, train, etc. but does not drive itcompare h. The total number of people in an area, a country, etc.Keys: e f h b g d a c三、Language points1. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. 我们自己的星球, 地球, 由于人口的快速增长, 变得越来越拥挤, 污染越来越严重。 辨析：fast, quick和rapid 【梳理】1) fast既可用作形容词又可用作副词, 主要表示人或物体本身的速度快, 如汽车开得快、人走得快、时间过得快等。2) quick常用作形容词, 主要表示反应快、动作敏捷。3) rapid是正式用语, 只用作形容词, 语气较强, 常用于表示抽象意义的“快速的”, 如价格涨得快、社会变革快等。【运用】选用fast, quick或rapid填空。1) My brother ate a ________ breakfast and went to school in a hurry.2) Tom runs so ____ that I can’t catch up with him.3) We saw the ______ development of the society these years.2. It is hoped that people could start all over again and build a better world on Mars.人们有望能够在火星上重新开始，建设一个更好的世界。句型 It is hoped that…表示“……可以指望”，指说话者希望如此。如：我们希望在本周前完成此项目。_________________ we can finish the project before this weekend.3. At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months.目前，我们的宇宙飞船太慢了，无法运送大批的乘客火星—因为要花几个月的时间。句中的large numbers of表示“大量的”，也可以说成 a large number of 。如: 很多人在国庆假日去旅游。 _______________ people go travelling during the National Day holiday. 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.随着科技的发展，到2100 年，乘坐以光速飞行的宇宙飞船，行程或许只要大约20分钟！短语 at a/the speed of的意思是“以……的速度”。如：小汽车正以每小时100公里的速度行驶。 The car is moving _________________100 kilometers per hour.5. Food would most probably be in the form of pills and would not be so tasty.食物很大可能会以药片的形式存在，而且味道没有那么可口。句中的in the form of 的意思是 “以……的形式”。如: 欢迎以钱的形式资助。Help _______________money will be welcome. 6. The gravity on Mars is only about three-eights of that on the earth.火星上的重力大约只有地球上的八分之三。在表示分数时, 分子用基数词, 分母用序数词。分子如果大于1, 分母须用复数形式。分子、分母之间有无连字符均可。如: 1/3 2/5在做比较时，我们常用that/those指代句中类者相同的那一部分。通常that用于指代可数名词数或者不可数名词，those用于指代可数名词复数。此句中的that指代前面的gravity。如：火星上的空气要比起球上稀薄很多。 The air on Mars is much thinner than _____ on the earth.7. Compared with life on Earth, life on Mars would be better in some ways. 与在地球上的生活相比, 火星上的生活在有些方面将会更好。compare with … 意思是“ 与……做比较”。在句中是过去分词短语作状语, 此时with和to可通用。 如: 与我们的那条路相比,这条路繁忙得多 。 This road is quite busy____________________ ours. 8. Every student would have a computer at home connected to interplanetary network. 每个学生家里都有一台电脑与星际网络连接。connect to 意思是“与……连接”。这里的connected to 是过去分词后置作定语,修饰computer。connect … to…表示“把…… 和……连接起来 ”。 如: 山姆想把鼠标和电脑连接起来。 Sam wants to _____________________________.9. Life on Mars would be interesting as well as challenging.火星上的生活不仅有挑战性而且很有趣。短语as well as 的意思是“不但……而且，既……又”。注意这一短语在翻译成中文时，应先as well as 后面的内容，再翻译前面的。如: They visited the museum as well as the zoo. 他们不但参观了动物园, 还参观了博物馆。 Read the passage and learn some new words and expressions match the words on the left with the meanings on the right.学习language pointsFill in blanks 通过文章学习词汇，做到词不离句，词不离篇。巩固词汇知识夯实语言知识基础通过练习，巩固语言知识。
课堂小结 和老师一块总结 梳理本节课所学知识，加深记忆，巩固知识。
作业 Homework1. Make a short passage about "Life on Mars".2. Read the passages fluently. 课下巩固与课堂学习相结合。
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Unit 4 Life on Mars
Reading 2
牛津译林版 九年级下
Lead-in
Review some words
air tank
tent
dried food
space helmet
Lead-in
Review some words
special boots
computer
power pack
sleeping bag
Lead-in
crowded
robot
online teacher
polluted
Read the passage and learn some new words and expressions
Review some words
presentation
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.
Read the passage and learn
some new words and expressions
行星
拥挤的
被污染的
快的
增加
再，重新
presentation
Read the passage and learn
some new words and expressions
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.
乘客
以...的速度
不舒服的
presentation
Read the passage and learn
some new words and expressions
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.
氧气
以...的形式
味道好的
presentation
Read the passage and learn
some new words and expressions
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.
专门地
漂浮
presentation
Read the passage and learn
some new words and expressions
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.
与...比较
因此
presentation
Read the passage and learn
some new words and expressions
There would probaly 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.
行星间的
网络
挑战性的
Daniel needs to check the meanings of some words in the articl.Help him match the
words on the left with the meanings on the right.Write the correct letters in the blanks.
Practice
crowded____
rapid____
population____
all over again____
passenger ____
tasty____
specially____
compare____
a. for one purpose
b. a second time from the beginning
c. Decide in what way things are similar or difficult
d. having a nice taste
e. full of people
f. happening in a short period of the 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.
c
e
f
h
b
g
d
a
Presentation
Language points
1. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population.
我们自己的星球, 地球, 由于人口的快速增长, 变得越来越拥挤, 污染越来越严重。
辨析：fast, quick和rapid
Presentation
（1） fast既可用作形容词又可用作副词, 主要表示人或物体本身的速度快, 如汽车开得快、人走得快、时间过得快等。
（2） quick常用作形容词, 主要表示反应快、动作敏捷。
（3） rapid是正式用语, 只用作形容词, 语气较强, 常用于表示抽象意义的“快速的”, 如价格涨得快、社会变革快等。
Language points
辨析：fast, quick和rapid
Practice
（1）My brother ate a ________ breakfast and went to school in a hurry.
（2）Tom runs so ______ that I can’t catch up with him.
（3）We saw the _________ development of the society these years.
Language points
选用fast, quick或rapid填空。
rapid
quick
fast
Presentation
2. It is hoped that people could start all over again and build a better world on Mars.
人们有望能够在火星上重新开始，建设一个更好的世界。
如：我们希望在本周前完成此项目。
It is hoped that we can finish the project before this weekend.
Language points
句型 It is hoped that…表示“……可以指望”，
指说话者希望如此。
Presentation
3. At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months.
目前，我们的宇宙飞船太慢了，无法运送大批的乘客火星—因为要花几个月的时间。
Language points
句中的large numbers of表示“大量的”，也可以说成 a large number of 。
如: 很多人在国庆假日去旅游。
A large number of people go travelling during the National Day holiday.
Presentation
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.
随着科技的发展，到2100 年，乘坐以光速飞行的宇宙飞船，行程或许只要大约20分钟！
如：小汽车正以每小时100公里的速度行驶。
The car is moving at the speed of 100 kilometers per hour.
短语 at a/the speed of的意思是“以……的速度”。
Language points
Presentation
5. Food would most probably be in the form of pills and would not be so tasty.
食物很大可能会以药片的形式存在，而且味道没有那么可口。
如: 欢迎以钱的形式资助。
Help in the form of money will be welcome.
句中的in the form of 的意思是 “以……的形式”。
Language points
Presentation
6. The gravity on Mars is only about three-eights of that on the earth.
火星上的重力大约只有地球上的八分之三。
在表示分数时, 分子用基数词, 分母用序数词。分子如果大于1,分母须用复数形式。分子、分母之间有无连字符均可。
Language points
Presentation
如：火星上的空气要比起球上稀薄很多。
The air on Mars is much thinner than that on the earth.
在做比较时，我们常用that/those指代句中类者相同的那一部分。通常that用于指代可数名词数或者不可数名词，those用于指代可数名词复数。此句中的that指代前面的gravity
Language points
Presentation
7. Compared with life on Earth, life on Mars would be better in some ways.
与在地球上的生活相比, 火星上的生活在有些方面将会更好。
如: 与我们的那条路相比,这条路繁忙得多 。
This road is quite busy compared with ours.
compare with … 意思是“ 与……做比较”。在句中是过去分词短语作状语, 此时with和to可通用。
Language points
Presentation
8. Every student would have a computer at home connected to interplanetary network. 每个学生家里都有一台电脑与星际网络连接。
如: 山姆想把鼠标和电脑连接起来。
Sam wants to connect mouse to the computer.
connect to 意思是“与……连接”。这里的connected to 是过去分词后置作定语,修饰computer。connect … to…表示“把…… 和……连接起来 ”。
Language points
Presentation
9. Life on Mars would be interesting as well as challenging.
火星上的生活不仅有挑战性而且很有趣。
如: They visited the museum as well as the zoo.
他们不但参观了动物园, 还参观了博物馆。
短语as well as 的意思是“不但……而且，既……又”。注意这一短语在翻译成中文时，应先as well as 后面的内容，再翻译前面的。
Language points
Summarize
all over again at the speed of
in the form of
Compared with as well as
large numbers of
句型 It is hoped that…
辨析：fast, quick和rapid
Words and expressions
Homework
1. Make a short passage about "Life on Mars".
2. Read the passages fluently.
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