Module3Unit 2 We have not found life on any other planets yet教案

第二课时教学设计
教材分析
Topic Is there life out in space?
Aims To understand the passage about space travel involving the present perfect tense
To write about space travel using the present perfect tense
Key vocabulary： planet, alone, also, part, light, beyond, cost, prefer, none, environment, air
Key structures： The present perfect tense with just, already, yet
Tasks Discussion and making a science report
Writing
Grammar The present perfect tense
课时教学目标
To be able to read the passage carefully and answer the questions corectly.
To be able to summarise a passage.
To be able to describe a picture using the present perfect.
教学重点与难点
Learn to use the present perfect.
教学辅助
Multi-media, the cards of planets, tape recorder, video
教学方法
PWP
教学内容
教学活动
设计意图
教师活动
学生活动
Step 1: Lead-in
T shows the pictures about E.T. and spaceships.
Ss should answer questions about them. And talk about something about Shenzhou-9 to know about the achievements that we have made. They can work in group to talk about them.
通过观看外星人和宇宙飞船相应的图片，引起学生学习本课内容的兴趣，讨论外星人的长相、来到地球的方式以及外星人是否真的存在等问题，活跃课堂气氛。了解我们中国在太空探索方面所取得的成就，增强学生的民族意识和民族自豪感。
Step 2: Reading
Before reading
T show a few pictures about planets,stars,solar system，galaxies and universe, and talk about the relationship among them in group.
T: Can you order the words and expressions from the smallest to the largest？
A. galaxy B. planet C. solar system D. star E. Universe
Put them in the right order.
简单介绍一下天体的关系，将行星，恒星，太阳系，星系和宇宙按照大小进行排序，有助于学生了解文章内容。
Step 3: Fast reading
Read the passage quickly in silience and choose the best title for it.
1. Anyone out there?
2. Life on Earth
3. The sun and other stars
4. The stars at night
培养学生快速阅读和对文章的理解能力。
Step4 ：careful reading
Read every paragraph carefully in silence and answer the questions for each paragraph.
g: 1.How long has there been life on the earth?
2.What is called the solar system? What is it?
3.Why is it impossible to imagine how large the universe is?
Because they are very _________and their light ______travel for many years to reach us.
4.Scientists have ______ spacships to the planet Mars to ____________. They have even sent spaceships to ______________ the solar system. However, no spaceship has travelled ___________ to reach other stars in our Galaxy.
快速阅读只能让学生大体了解文章的简要内容，通过精读每段并回答相应的问题来认真了解每段的内容，从而从整体上全面了解文章内容。默读的形式符合我们平时的阅读方式，贴近日常生活，而且回答方式多样，可以锻炼学生的阅读能力。
Step 5： after reading
After reading the passage, do the exercise in step 2 again.
do the exercise in step 2 again.
经过细读，学生们应该掌握了本课的内容，所以再做一次选出最好的题目的题，可以帮助学生自己排除错误答案，选出正确答案。
Step 6: Exercise
Check the true sentences and correct the wrong sentences.
本活动为细节理解题，采用的信息识别方式。其中还涉及推理和逻辑。组织学生通过读课文，掌握文章的细节，然后做相应的判断题。改正错误的句子可以检查学生是否理解本课文。
Step7:Writing
Look at the picture from a science story for children and answer the questions.
Eg: What have the scientists just received?(a message from one of our spaceships) They have just received a message from one of our spaceships.
Where has the spaceship landed? (Mars)
2. What has the spaceship discovered? (people on Mars)
3. Why have the people on Mars not sent us a message? (do not know how to)
4. Why have the people on Mars not visited us on the earth?(do not know how to)
本活动要求学生根据问题写出答语，并且已经给了提示，因此比较简单，可以小组合作。
Homework
write a passage to describe the picture. Use the answers to the questions in step 1 to help you. Pay attention to “have done”.
We’ve just heard that our spaceship has landed on Mars, and we’ve……______
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板书设计：?
重点单词
planet, alone, also, part, light, beyond, cost, prefer, none, environment, air
重要句型
The present perfect tense with just, already, yet