BA LONG SECONDARY SCHOOL April 29, 2010 a. Don’t pick flowers b. Don’t throw trash on the street c. Don’t damage trees d. Save water f. Collect bottles and cans e. Keep off the grass 1 2 3 4 5 6 Period 99: Unit 16 MAN AND THE ENVIRONMENT B. POLLUTION Lesson 4: B4 – 5 I. PRESENTATION: * Examples: a. Save water. b. Don’t damage trees. * Structure: S + should/ shouldn’t + V(inf) + O + … I. PRESENTATION: * Prediction: (1) Nga: Put it in a trash can. (2) Lan: Then we should put it in a bag and take it home. (3) Nam: There aren’t any trash cans. (4) Ba: What are we going to do? (5) Lan: We shouldn’t leave our trash. II. PRACTICE: 1. Listen and repeat: 2. Write: Example: a. We should not leave trash. a. e. d. c.b. b. We should not waste water./ We should save water. c. We should not damage trees./ We should not cut down the forests. d. We should collect bottles and cans. e. We should not pick flowers. Answer: a. b. c. We should collect bottles and cans. We should collect paper. We shouldn’t burn forests. III. FURTHER PRACTICE: - Learn by heart the structure. - Do the exercises again. - Prepare for lesson 5: B6-7