1. Unit 4 Warming up & Pre-reading

2. Free talk: Have you ever experienced any natural disasters? volcano( 火山 ) sandstorm ( 沙尘暴 ) Can you tell some kind of natural disasters?

3. Can you describe how terrible an earthquake is? drought( 旱灾 ) tsunami ( 海啸 )

4. Look at the pictures of Tangshan and San Francisco, describe what you see in the pictures. Qs: What will happen if there has been a big earthquake in these two cities? (beautiful cities; broad roads; tall buildings; large population)

5. Tangshan, HebeiJuly 28 th, 1976

6. 5:13 a.m. April 18th,1906, San Francisco

7. Presentation: As we know, earthquakes are disasters to everyone. But can we avoid or minimize ( 减少 )the loss caused by earthquake? Now let’s see what may happen before an earthquake comes. How can we foretell earthquakes?

8. Discussion: (competition) Please look at the pictures on Pre-reading and try to mention the signs of an earthquake.

9. Walls of wells will have deep cracks. There will be bright light in the sky; Cows, dogs and pigs become too nervous to eat; Mice run out of the fields looking for places to hide. The water in the wells will rise and fall.

10. Discussion: (Competition) Imagine there is an earthquake now, your home begins to shake and you must leave it right away. You have time to take only one thing. What will you take? Why?

11. personal washing things a bottle of water money torch ( 手电筒 ) mobile phone food and sweets blanket ( 毯子 ) What will you take with you? medicine You will take:

12. HOMEWORK : 1.How can we reduce the damage of earthquakes? 2. Prepare for reading.