(a)plants growing in sand

　　(b)sand hills

　　2. affect means_____________ .

　　(a)to kill (b)to cause a change

　　3. You wear a mask over your_____________ .

　　(a)face (b)body

　　4. strength is the noun of_____________ .

　　(a)strong (b)strange

　　Suggested answers:

　　1. b　2. b　3. a　4. a

　　Have a further practice to make sure students have mastered the new words. Finish Activity 5 on Page 33 individually, and then call back the answers in a whole class setting as complete sentences.

　　1. Weather experts have f another big sandstorm in a week's time.

　　2. It's f to be outside in a sandstorm.

　　3. I was in a very big sandstorm some years ago. Luckily, everyone s 　.

　　4. There's a lot of d on the floor. We need to sweep it away.

　　5. Desertification is a long p that takes many years.

　　6. Many Beijing c cycle to work.

　　Suggested answers:

　　1. forecast　2. frightening　3. survived　4. dust　5. process　6. cyclists/citizens

　　After that, complete the sentences below.

　　(Show the following sentences on the screen. )

　　1. The winds in a sandstorm can sometimes_____________ .

　　2. When Ren Jianbo was living in Inner Mongolia_____________ .

　　3. Sandstorms in China appear to have increased_____________ .

　　4. Cutting down trees and digging up grass can_____________ .

　　5. Traffic moved very slowly because_____________ .

　　6. The government is planting trees to the west of Beijing to_____________ .

　　Encourage students to give the whole sentence individually. The teacher can ask more students to have a try.

　　Suggested answers:

　　1. prevent you from seeing the sun

　　2. he experienced a terrible sandstorm

　　3. because of desertification

　　4. cause deserts and sandstorms to increase

　　5. the drivers cannot see

　　6. prevent the desert coming nearer

　　→ Step 5 Consolidation

　　Option One

　　Listening and Speaking:

　　The teacher may play the tape for students to follow, asking them to pay attention to the intonation and pronunciation, especially of the new words.

Now, turn to Page 37, and have a look at Speaking 1. Suppose there has been a bad