2. Pre-reading 1.Put the following pictures in a right order. Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 A B C D E F 2.Anwer the questions with the picture cues. What must we do first when we plant trees? Dig a hole large enough for the tree. What do we do with a stick? Where do we put the tree? Knock a long strong stick into the earth. Water the tree. Tie the tree to the top of the stick. What is the last thing we must do? What do we tie the tree to? What do we do after we put the earth back in the hole? Step on the earth several times after we put the earth back in the hole. Put the tree in the hole.

3. dig… knock… put… put…back… step on… tie… water…

4. 3.A quiz on trees 1. Trees keep the ground stable(. 2. A healthy tree has about 20,000 leaves. 3. Trees help cool the earth down. 4. An oak tree ( help over 460 kinds of animals. 5. In a year, an average tree can remove ( 1 ton of carbon dioxide from the air. 6. The average tree in a big city survives ( only about 80 years. 7. Patients get well faster when they are in a room that looks out onto trees. 8. Nowadays more and more people in Shanghai adopt a tree to welcome Tree Planting Day. It only needs 30 yuan. Pre-reading 2,000 8

5. CO 2 harmful gas take inO2O2 release oxygen cool the air and make it clean

6. fruit wood nuts cotton tea beans …… rubber

7. Read the passage While-reading Task 1 on Page 28

8. Read again and divide it into four parts. What Good Are Trees? March 12 is Tree Planting Day. On that day every year, people, men and women, young and old, plant a lot of trees. What good are trees? They make streets and housing estates more beautiful and quieter. They make the air cleaner and cooler. You probably( ) didn t know that three trees can do the job of fifteen air conditioners. Trees can also give us fruit. Oranges, bananas, apples, pears and kiwi fruit all come from trees. There is wood in our pencils, and paper in our books --- all from trees. But some people do not know the importance of trees. They cut down trees at will( ). We must stop them doing so. We must plant more and more trees.

9. What good are trees? They make streets and housing estates __________ and _______. They make the air ______ and ______. _____ trees can do the job of ______ air conditioners. more beautiful quieter cleaner cooler Three fifteen

10. Summarize the main idea of each parts. Part 1 Part 2 Part 3 Part 4 When is the Day and what do people do? What good are trees? What kind of bad things happen to trees? What should we do then? 1. make streets and housing estates… 2. make the air… (an interesting fact: 3 trees = 15 air conditioner) 3. give us fruits… 4. give us wood and paper… 1. People dont know… 2. …cut down…at will 1. We must stop… 2. We must plant…

11. What good are trees? They make streets and housing estates __________ and _______. They make the air ______ and ______. _____ trees can do the job of ______ air conditioners. more beautiful quieter cleaner cooler Three fifteen

12. Homework Writing : The Earth Day