time polluting our environment with dangerous chemicals. If we continue to do this，life on earth cannot survive. Happily concerned people have made some progress in environmental protection. Governments of many countries have established laws to protect the air，forests and sea resources and to stop environmental pollution. People should be further educated to recognize the importance of the problems, to conserve our natural resources and recycle our products. So in this class we are going to learn Environmental Protection.

Step II Unit objectives

In this unit you will ...

Deal with In this unit you will....

First ask students to read Unit objectives, which is a clear direction to learning Unit 22. Ask them to think about which of the objectives will be most important for their individual learning.

T: Good morning /afternoon, class!

Ss: Good morning/ afternoon, Mr. /Ms...

T: Look at the two logos! Can you guess what organization they stand for?

S1: The first one stands for State Environmental Protection Administration of China.

S2: The second is the logo of Earth Summit.

T: Quit right! They both have some association with Environmental protection. In this unit, we are going to learn something about Environmental protection. As usual, before we start a new unit, what shall we do?

Ss: Learn the unit objectives.

T: What are the objectives in Unit 22? (Show the unit objectives on the PowerPoint and color the language skills. Ask students to pay more attention to the colored words. Or ask students to read the unit objectives on Page 5 together, and they should pay more attention to the words in blue.) Please discuss which of the objectives is most important to you.

After discussing the unit objectives, go on with Warm-up.

Step III Warm-up

Deal with Ex1 in Warm-up.

Show some pictures or video clips about environmental problems for students to describe.