Pre-reading, Reading, Comprehending    

Teaching Goals:

1.To read about global warming.

2.To get some idea about the effect of global warming.

3.To develop some basic reading skills.

Teaching Procedures:

Step 1. Warming Up

Purpose: To arouse Ss interest in learning about global warming.

1. Team work

Answer the questions below:

(1) Have you ever seen a greenhouse?

(2) How does a greenhouse work?

(3) What do you think greenhouse gases do?

2. Group work                             

Look at the picture, and ask Ss some questions.

T: What is this building made of?                     

S1: It’s made of plastic.

T: What’s its purpose?

S2: Plants can grow in it when it’s cold outside.

T: How does it work?

S3: The glass traps the heat from the sun, making the air warm so that plants grow better.