试讲-大学英语教案-第1册第9单元教案

Book1

Unit9 Is there life on Earth?

Teaching Hours: 50 minutes

Students’ Level:freshmen of non-English majors in the 1st semester.

Teaching Objectives:

1.About the warming-up, get students know something about environment

pollution and protection.

2.About background knowledge, get students know some information about the

eight planets in solar system especially the Venus and the Earth.

3.About the global reading, students are supposed to have a good understanding of

the text, not only capable of finding out answers about comprehension questions but also able to summarize the main idea of the text.

4.About the classroom presentation, students are to practice their spoken English

through a given topic.

Key Teaching Points:

1. Bad effects of environment pollution and some ways of environment protection.

2. The development, structure and the main idea of the story.

Teaching Procedures:

Part I Warm-up Questions (10mins)

Ask students some questions as a lead-in to the text.

1. Women used to be referred to as the weaker sex. What do you think?

2. Do you think there is real equality between the sexes in present-day China?

3. Who is the heroine you admire most? Give your reasons.

Part II Background information (10mins)

1. Eight Planets in the Solar System

They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.

2. Venus

Venus is the second planet in distance from the sun and nearest to the Earth of all the planets in the solar system. Except for the sun and the moon, Venus is the brightest object in the sky. The planet is called “the morning star” when it appears in the east in the sunrise, and “the evening star” when it is in the west at sunset.

The surface temperature of Venus averages about 475 degrees centigrade and its atmosphere is about 95% carbon dioxide (CO2). Oxygen is rare there. The high temperature and near absence of oxygen on Venus make it unlikely that life as we know it could exist there.

It is satirically interesting that Art Buchwald has chosen the planet Venus as the setting for his story. His satire is most deeply felt when he has the Venusian professor say that if the Venusians can learn to breathe in an Earth atmosphere, then they can live anywhere else.

3. Earth

The earth is the third planet in the system and the moon is always circling around it. It looks like a big blue marble; from high above the Earth and from the moon, the planet gleams and shines. It’s really a beautiful planet, but her beauty is not only because of the view, but also her vitality.

The earth, the planet we human have been living on for thousands of years, is the only planet whose environment is suitable for creatures in the solar system. The earth is the cradle of life. It’s high time that we took actions to protect our planet. Part Three Global Reading (20mins)

1. Introductory Remarks

This is a science fiction story, isn’t it? The title “Is there life on Earth?” produces a strong air of humor, arousing readers’interest immediately. Surely, you will enjoy your reading.

1) Questions about the Text

① What caused the excitement on the planet Venus?

For the first time Venusian Scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.

②What led the Venusian scientists to believe that there’s no life on Earth?

For one thing, Earth’s surface in the area of Manhattan is composed of solid concrete and nothing can grow there. For another, the atmosphere is filled with carbon monoxide and other deadly gases and nobody could possibly breathe this air and survive.”

③Why does professor Zog think it impossible to land a flying saucer on Earth without its being smashed?