In this period you practiced listening and speaking. It's important to protect our environment. We should do whatever is useful and meaningful to environment and call on people around you to protect our only earth.

　　Homework: Read more materials about the environment protection in English.

　　板书设计

　　Module 4　Sandstorms in Asia

　　Period 4 Listening and Vocabulary; Speaking

　　Words

　　refrigerator

cutting down trees

　　environment

　　pollute

　　coastal

　　concerned

　　evidence

　　major

　　urgent 　　Listening

　　A. garbage　B. trees　C. pollution

　　D. melting ice at the Poles　E the climate

　　Speaking

　　Coal smoke pollutes,

　　plastic doesn't biodegrade easily,

　　fridges contain CFCs which destroy ozone,cars emit carbon dioxide which pollutes,cutting down trees causes desertification and reduces oxygen while increasing carbon dioxide.

　　atmosphere

　　carbon dioxide

　　chemical

　　damage

　　environment

　　garbage

　　melt

　　pollution

　　recycle

　　the Poles

　　活动与探究

　　1. Find out more listening materials to practice.

　　2. Do more oral practice.