牛津英语9下知识点unit-4说课讲解.doc

牛津英语9下知识点unit-4

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9下 Unit 4 Life on Mars
一、复习单词表
A. 拼读易错单词
planet, polluted, rapid, increase, passengers, uncomfortable, tasty, specially, rapidly, circle, agreement, possibility, stranger, electronic
B. 重点单词用法
1. polluted adj. 被污染的 pollute v. 污染 pollution n.. 污染
2. rapid adj. 快的，迅速的 —→rapidly adv. 快地，迅速地
3. increase v. & n. 增加，增长
4. uncomfortable adj. 使人不舒服的，不舒适的
反义词：comfortable adj. 使人舒服的,舒适的
5.tasty adj. 味道好的== delicious 比较级：tastier 最高级：tastiest
tasteful 有滋味的；有品位的；雅观的
taste n. 味道—→ adj. tasteless 无味的；无鉴赏力的
tasty 美味的
6. specially adv. 专门地，特地 ←-- special adj. 特殊的，特别的
pare vt.. & vi. 比较
① compare...with... 意为“把...与...比较”。
If you compare his work with hers, you’ll find hers ia much better.
②compare...to... 意为“把...比作...”。
Shakespeare compared the world to a stage.
8. agreement n. 一致，同意 ←—— agree v.同意
be in agreement ==agree 同意
We are in agreement on this point.== We agree on this point.
9. possibility n. 可能性 ←-- possible adj. 可能的—→ 反义词：impossible
10.stranger n. 外来者，陌生人 ←-- strange adj. 奇怪的
二、重点词组和重点句型用法
A. 重点词组
1. air tank 氧气罐
2. dried food 干粮
3. sleeping bag 睡袋
4. power pack 电源包
5. by the year2100 到2100年时
6. all over again 再；重新
7. at a/the speed of... 以...的速度 move at high speed 高速运行
8. in the form of... 以...的形式
9. the journey to Mars 到火星的旅行
10.float off into space 漂浮到太空中
11. in some ways 在某些方面
12.connect to... 与...什么连接
13.circle around... 绕...运转
14.be similar to... 与...相似
15.by the way 顺便问一下
16.carry out 开展；执行
17.move away from... 离开...
18.after all 毕竟
19.keep an English diary记英语日记
20.with the development of... 随着...的发展
21.the rapid increase in population 飞速增长的人口
22.large numbers of... == a large number of... 许多...
修饰可数名词复数，作主语时，谓语动词用复数。number 前可用large,small等修饰。以示程度。
B. 重点句型用法
1.—Wow, I’ve never thought about travelling into space. 哇，我从未想过到太空旅行。
— Me neither. 我也没有。
① think about doing sth. 考虑做某事
② Me neither.==Neither have I.
2. How do you like life on Mars? 你认为火星上的生活怎么样/
How do you like...? == What do you think of...? 你认为....怎么样？
3.What would it be like to live on Mars? 住在火星上将会是什么样子呢？
What+be+主语+like? ....怎么样？
4.Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. 因为飞速增长的人口，我们自己的星球——地球正变得越来越拥挤，污染越来越严重。
5.The gravity on Mars is only about three-eighths of that on the Earth.
火星上的重力只有地球上的八分之三。
① 分数表达法：分子是基数词，分母是序数词，如果分子大于1，分母要用复数形式，在分子与分母之间可加连字符也可不加连字符。
② 分数+of+名词结构作主语时，谓语动词的单复数视of后面的名词而定，如果名词是复数，谓语动词用复数形式；如果名词是单数或不可数名词，谓语动词用单数形式。
One third of the water is dirty.
Two thirds of the workers in our factory are young people.
6.Compared with life on the Earth, life on Mars would be better in some ways.
与地球上的生活相比，火星上的生活在某些方面要好些。
过去分词短语compared with life on the Earth在句中作状语。
7.Every student would have a computer at home connected to an interplanetary network。.
每个学生家里都有一台电脑与星际网络连接。
过去分词短语connected to an interplanetary network在句中作定语，修饰前面的computer.
8.Life on Mars would be interesting as well as challenging.
火星上的生活，不仅有挑战性，还很有趣。
as well as 不但...而且，既...又
注意：这一短语在译成中文时，应先译as well as 后面的内容，再译前面的。当as well as 与主语连用时，在意义上强调前者，谓语动词应与其前的主语保持一致。
He as well as his friends likes going shopping.
三、语法复习
简单句和复合句之间的转换（二）
1.含有状语从句的复合句与简单句之间的转换
在英语中，我们可以用at the age of, because of, without...等介词短语，将含有状语从句的复合句改为简单句。
He learnt to swim when he was eight years old.
→He learnt to swim at the age of eight.
He could not go to the party because he had too much homework.
→He could not go to the party because of too much homework.
He cannot solve this problem if he has no help.
→He cannot solve this problem without help.
注意：转换时要注意时态和意思的一致性和准确性。
2.含有宾语从句的复合句与简单句之间的转换
在英语中，我们可以用of..., like...等介词短语，将含有宾语从句的复合句改为简单句。
The photos remind me that I travelled to the UK five years ago.
→The photos remind me of my trip to the UK five years ago.
Are you certain that Tom is satisfied with the plan?
→Are you certain about Tom’s satisfaction with the plan?
注意：常用的一些动词和介词的搭配有：
remind somebody of...
be sure/certain about...
3.含有定语从句的复合句与简单句之间的转换
在英语中，我们可以用with..., in....等介词短语，将含有定语从句的复合句改为简单句。
Do you know the girl who is holding two books in her hand?
→Do you know the girl with two books in her hand?
The man who wears a blue shirt is our English teacher.
→The man in a blue shirt is our English teacher.
四、语篇复习
A.按照课文内容填空。
At the moment, moving to Mars may be difficult to imagine, but many people believe that we will live on the _______ Mars by the year 2100. Our own planet, Earth, is becoming more and more _________ and ________. It is________ we can start all over again and build a________ world on Mars.
_________ with life on Earth, life on Mars will be better ____ many ways. People will have more space. We many even live in a _______ with ten bedrooms. Many people believe that _______ will do most of our work and that we will have more time to _______.
B.书面表达
上周，你们班以“Do You Want to Live on Earth or on Mars?”为题，进行了一场英语大讨论。
下表是讨论的结果：

所占比列
观点
选择居住在地球上
的学生
七分之五
习惯了地球上的生活；食物鲜美；更容易出行和交流。
选择居住在火星上
的学生
七分之二
地球上越来越拥挤，污染越来越严重；火星上生活更轻松，将有更多的闲暇时间用于个人爱好；人们更健康，寿命更长。
请你用英语介绍这次讨论情况（100词左右，文章的开头已给出，不计入总词数）
Last week, our class had a discussion called “Do You Want to Live on Earth or on Mars?” Here is the result of the discussion.
________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
范文：
Last week, our class had a discussion called “Do You Want to Live on Earth or on Mars?” Here is the result of the discussion.
Five-sevenths of the students wanted to live on Earth. They are used to the life on Earth. They think the food is tasty and it’s easier to go out and communication.
Two-sevenths of the students wanted to live on Mars. They think Earth is becoming more and more crowded and polluted. They will feel relaxed when they live on Mars. They will have more free time for their hobbies. People will be healthier and they can live for a long time.
I think it must be fun to live on Mars. But we should also deal with the pollution on Earth. 五、熟记重点短语
1. air tank 氧气罐
2. dried food 干粮
3. sleeping bag 睡袋
4. power pack 电源包
5. by the year2100 到2100年时
6. all over again 再；重新
7. at a/the speed of... 以...的速度 move at high speed 高速运行
8. in the form of... 以...的形式
9. the journey to Mars 到火星的旅行
10.float off into space 漂浮到太空中
11. in some ways 在某些方面
12.connect to/with... 与...什么连接
13.circle around... 绕...运转
14.be similar to... 与...相似
15.by the way 顺便问一下
16.carry out 开展；执行
17.move away from... 离开...
18.after all 毕竟
19.keep an English diary记英语日记
20.with the development of... 随着...的发展
21.the rapid increase in population 飞速增长的人口
22.large numbers of... == a large number of... 许多...

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