外研版英语八年级下Module 3 Journey to space Unit 2 We have not found life on any other planets yet教案（1课时）

Module 3 Journey to space
Unit 2 We have not found life on any other planets.教案

Teaching Plan
Ⅰ Teaching aims
1. To learn the new words and expression like, none, environment, galaxy, communicate, etc.
2. To get some information about space and spaceships.
3. To read and find out information from the text and choose the best title.
4. To write a passage to describe the picture.

Ⅱ Key points
1. Words and expressions like, none, environment, galaxy, communicate, etc.
2. To get the information from the text.
3. To use Present Perfect Tense to describe the picture about science.

Ⅲ Difficult points
1. To use Present Perfect Tense correctly.
2. To understand the structure of Present Perfect Tense with already, just and yet.

Ⅳ Teaching procedures
Step 1 Warming-up
1. Introduce the new words and expressions, and read after the teacher.
2. Watch a video about planets in solar system.
3. Ask and answer. (To introduce the solar system and some Chinese spaceships.)
1) What is it talking about?
2) How many planets are there in the solar system? What are they?
3) Have we found the life on other planets except the earth?

Step 2 Fast reading
1. Number the paragraphs.
2. 1min to read the passage and match the topics with the paragraphs.
A. The scientists’ questions about life in space.
B. How large our Galaxy is.
C. Facts about life on the earth and other planets.
D. The solar system and the Galaxy.
E. How large the universe is.
3. 30s to read through the passage again and choose the best title for it.
1) Anyone out there?
2) Life on the earth
3) The sun and other stars
4) The stars at night

Step 3 Careful reading
3mins to read the passage carefully and check(√) the true sentences in Activity 3.
1) The earth is a star.
2) The sun is a star.
3) There is more than one galaxy in the universe.
4) The light from the stars in other galaxies has travelled for a long time to reach us.
5) Scientists have received many messages from space.
6) Spaceships have visited most of the universe.
Keys: 1. × 2. √ 3. √ 4. √ 5. ×
Step 4 Post reading
1. Watch the flash to get more information about the passage.
2. Complete the mind-map.

Keys: (1) universe (2) solar system (3) the sun (4) the earth

1. Complete the passage with the words and expression in the box.

communicate environment none solar system universe


Is there life on other planets? There are seven other planets in our (1) ___________, but (2) ___________ of them has a(n) (3) ___________ like that of the earth. Spaceships from the earth have done surveys of the other planets, but they have not found ant life there. Why has no one from other planets tried to (4) ____________ with us? It is true that scientists have not discovered life on other planets in the (5) ____________ yet, but some scientists believe that they will find it some day.
Keys: 1. solar system 2. none 3. environment 4. communicate 5. universe

Step 5 Language points
1. Find out the phrase in the passage.
1) 在地球上
2) 数亿年
3) 在其他任何行星上
4) 绕着太阳转
5) 他们中没有一个
6) 太阳系
7) ...的一小部分
8) 在宇宙中
9) 足够远的
10) 到达别的星球
11) 和...交流

2. Talk about some key points in the sentences.
1) Scientists think that there has been life on the earth for hundreds of millions of years.
hundreds of 数以百计的 millions of 数以百万的
当数词billion, million, thousand, hundred前面有基数词修饰，表示具体数量时，后面不叫“-s”；但当前面没有基数词修饰并表示概数时，则要在后面加“-s”，再加介词of。
E.g. Mount Tai is so famous that ________ people visit every day.
A. hundred of
B. seven hundreds of
C. seven hundreds
D. hundreds of
2) None of them has an environment like that of the earth, so scientists do not think they will find life on them.
none (三者或三者以上)没有一个；
none of + 复数可数 名词/ 代词，作主语时，谓语动词既可以是单数也可以是复数。
none of + 不可数名词，做主语时，谓语动词用单数
E.g. None of the children ______________ (speak) English. Key: speak / speaks
None of cheese _______ (be) on the top of the pizza. Key: is
3)It is impossible to imagine.
Structure: It is + adj. + (for sb.) + to do sth.（对某人来说）做某事是......的
E.g. It's necessary for students _______ the listening ability (能力).
A. improve
B. to improve
C. improving
D. have improved
4) However, no spaceship has travelled far enough to reach other stars in our Galaxy.
far enough 足够远的；enough作副词放在形容词后
E.g. My brother isn't ____ ____(足够年轻的) to go to school. Key: young enough
reach 到达

5) Why has no one communicated with us?
no one意为“没有人”，多用来指人。当它用作主语时，谓语动词要用单数形式。
E.g. 没有人知道他是谁。
No one knows who he is.

Step 6 Summary
1. Go back to the question: Anyone out there?
2. List out some efforts that people have dome so far.

Step 7 Homework
1. Write a passage to describe the picture in Activity 5, Page 21.
2. Read the passage aloud.
3. Finish the exercise as follow.
Ⅰ Complete the sentence with the correct form.
1. It is ____________ (possible) to finish the work in such a short time.
2. None of my friends __________ (see) an astronaut.
3. It's not easy for the old lady ____________ (clean) the window alone.
4. -- ____________ you ____________ (have) supper yet? --Yes, I have.
5. No one _____________ (be) to Mars yet.
Keys: 1.impossible 2. have / has seen 3. to clean 4. Have; had 5. has been

Ⅱ Complete the sentences.
1. 地球是行星，它围绕太阳运转。
The earth is __________ __________ and it __________ __________ the sun.
2. 近10年来，我的家乡发生了很大变化。
There __________ __________ great changes in my home town in the last 10 years.
3. 没有一个学生去过英国。
__________ __________ the students have__________ __________ England.
4. 完成今天的作业不容易。
It's __________ __________ __________ today's homework.
5. 我们缴纳了数亿美元的税金。
We paid __________ __________ __________ __________ dollars in taxes.
Keys:
1. a planet; goes around
2. have been
3. None of; been to
4. difficult / hard to finish
5. hundreds of millions of






Module 3 Journey to space
Unit 2 We have not found life on any other planets.
学法指导

学习运用现在完成时谈论关于人类探索太空的事情，培养学生对天文知识的兴趣和对未知事物的探索精神。
活动一：
是热身运动，为阅读部分做了词汇上的准备和话题的铺垫。要求学生根据视频回答问题，导入本节课的主题；再观察有关飞船的图片，加深学生对中国宇宙飞船的了解。
活动二：
是一篇关于探索宇宙的文章，学生要快速阅读文章给每个自然段找到小标题；考查学生把握段落大意的能力。大概了解了每个自然段的大概含义，再快速浏览文章，选出文章的最佳标题。
活动三：
细读文章，根据文章选出正确的句子，让学生对文章有更深层的理解。
活动四、五和六：
通过思维导图和短文填空概括文章的主旨大意；归纳文章的短语及要点，巩固学生对所学知识的掌握和运用。
活动七：
要求学生借助问题的答案来描述所给的图片，巩固了学生的知识点，也培养了学生运用目标语言进行写作的能力。