3. (出示教学挂图-太阳系，让学生们从感官上认识太阳系，教师导入新课。)

T: Boys and girls, just now we talked about Mars. As we know, Mars is the fourth planet from the sun in the solar system. Do you know how many planets there are in the solar system?

Ss:　　　 Yes. There are eight.

T:　 Right. The solar system is like the home of the eight planets. Our planet, the earth, is the third planet from the sun. However, the solar system is a small part of the universe.

(板书并释义。)

Scientists have sent up spaceships to explore other planets in the solar system. What’s more, some spaceships have gone beyond the solar system.

(板书，讲解并要求掌握beyond。)

Scientists will do more research about the space. So boys and girls, you must study hard.

Then you can do something useful to help research the space one day. Do you think so?

Ss: Yes, we will study hard.

T: OK. Next, let’s read the text to learn more about the solar system.

Step 2　 Presentation 第二步 　呈现(时间:8分钟)

2. (多媒体制作一个动漫的声音。让学生判断波利说的关于上一节课学过的火星的内容是否正确。激发学生的兴趣，达到复习的目的。)

T: Boys and girls. We’ve learned something about Mars. Do you still remember?

Ss: Yes.

T: Let’s listen to what Polly says. Are her expressions of Mars right or wrong?

Polly: Mars goes around the earth at a distance of about 228 million kilometres.

Ss: No, you are wrong.

Polly: It is one fourth as big as the earth.

Ss: No, it’s about half as big as the earth.

Polly: Mars looks like a red and black ball.

Ss: No, it looks like a red and orange ball.

Polly: It is very beautiful.

Ss: Yes.

Polly: A person weighs 120 kilos on earth, but only weighs 48 kilos on Mars.

Ss: Yes, you are right.

Polly: The temperature on Mars is between -120℃ and 20℃.

Ss: No, it’s between -138℃ and 28℃.

Polly: It takes a spaceship from the earth about eight years to reach Mars when the two planets are closest to each other.

Ss: No, eight months, not eight years.

T: OK, boys and girls, you did very well. It seems that you have mastered the passage very

well. Congratulations!

Step 1　 Review 第一步 　复习(时间:13分钟)

1. (多媒体展示一些图片，学生们根据图片内容造句，该句子必须是“情态动词+被动语态结构”，复习本单元语法。)

T: Hello! Boys and girls, in this topic we have learned a new grammar, the passive voice with modal verb. Now, let’s look at the screen. Say some sentences according to the pictures. Please remember that you should use “modal verb + be + P.P.”. Do you understand?

Ss: Yes.

T: (多媒体呈现一个很脏的教室。) Here is a classroom. S_1, can you?

S₁: Yes. The classroom should be cleaned every day.

T: Good. Let’s look at next one. (呈现一幅环境污染图片。)S₂, please?

S₂: The environment must be protected by us.

T: Excellent. Next one. (呈现一辆坏了的自行车。)S₃, you please!

S₃: The bike should be repaired.

T: Good. Next.(展现一个小孩用脏兮兮的手在吃苹果的图片。)Who can make a sentence?

S₄, can you?

S₄: Her hands should be kept separate from the apple.

T: Very good. Let’s look at next one. (呈现一片被砍伐的树林。)

S₅: The trees shouldn’t be cut down by people.

T: OK, next. (展现科学家们正在认真做研究的图片。)

S₆: Scientific research must be done carefully.

T: You did very well. Have you mastered the new grammar?

S_S: Yes.

(板书并要求掌握separate)

录音机/多媒体课件/教学挂图/幻灯片

3. Talk about our planet and living things on other planets.

2. Review the use of “modal verb + be + p.p.”.

1. Learn the new words and useful phrase:

beyond, separate, hand in

2. Homework:

Suppose you are an astronaut and have just come back from Mars. Please write a report about the living conditions in the spaceship and the information about Mars, including its color, shape, climate and distance from the sun…

板书设计:

1. (设计在火星上的生活区。)

T: Boys and girls, if we can live on Mars, can you design a place where we live? Don’t forget to add schools, shops, gardens, etc.You can discuss with your partner and arrange everything well, then we can exchange the pictures.

2. (播放《时间机器》的主题曲，导入3a。)

T:　　　 Boys and girls, is this piece of music beautiful?

Ss:　　　 Yes.

T:　 I like it very much. It is from the film “The Time Machine”. The film is based on a science fiction.

(板书，解释。)

I like watching the science fiction movies. I think they are very exciting and interesting. Do you think so?

Ss:　　　 Yes. We all like watching them.

T:　 OK, let’s look at the screen. Here are three famous movies. The first one is the film I just mentioned. Now, please read 3a carefully and try to understand them. Five minutes later, you will be asked to retell the three stories with your own words.

(五分钟后。)

T:　 Have you finished yet?

Ss:　　　 Yes.

T:　 Who is the volunteer to say something about “The Time Machine”?

S₅:　　　 Let me have a try. …

T:　 The second one?

S₆:　　　 …

T:　 The third one?

S₇:　　　 …

T:　 Excellent. You did a job! If Michael is interested in aliens, which one should he choose, S₈?

S₈:　　　 E.T.

T:　 Right! Now let’s discuss in groups and list more science fiction movies.

Step 5　 Project 第五步　 综合探究活动(时间:7分钟)