even terrible weather. We can call the bad or even terrible weather "natural disaster". Do you know "disaster"?

　　S: Yes, we do. It means "灾害"in Chinese.

　　T: Good, can you speak out the names of some disastrous(灾难性的)weather in the last module-Module 3 The Violence of Nature?

　　S: Yes, such as floods, hurricanes, lightning and tornados.

　　T: Oh, it's wonderful! And in this module-Module 4, we'll continue to learn about another disastrous weather named sandstorms. Let's go!

　　Option Two: Word meaning

　　Learn some words in the passage that is new to students.

　　Match the words with the definitions.

　　Read out the words in the box and have students repeat them after the teacher. Then ask students to match the definitions individually, after that, check the answers with the whole class.

　　（Show the following on the screen. ）

　　citizen

　　cycle(v. )

　　dust

　　expert

　　forecast

　　process

　　situation

　　survive 　　1. to ride a bicycle

　　2. someone who knows a lot about a particular subject

　　3. things that happen one after another, and have a result

　　4. someone who lives in a particular town or country

　　5. very small bits of dirt or earth, on the ground or in the air

　　6. to continue to live after a difficult or dangerous situation or event

　　7. to say what will probably happen

　　8. everything that is happening at a particular time 　　Suggested answers:

　　1. cycle　2. expert　3. process　4. citizen　5. dust　6. survive　7. forecast　8. situation

　　→ Step 2 Pre-reading

　　Option One: Pre-reading questions

　　In this period, the multimedia can be used. The teacher can show students a short video or some pictures about sandstorms or just let students have a look at the picture on Page 32. Then ask students the following questions:

　　(Show the following sentences on the screen. )

　　Look at the picture first and answer the questions.

　　1. What is happening?

　　2. What is the cyclist wearing and why?

　　3. What do you think happens to traffic in this situation? Why?

　　4. What do you think experts advise people to do in this situation?

　　Students may discuss with their partners.

　　About three minutes later, ask several pairs to speak out their answers.

　　Suggested answers:

　　1. There is a sandstorm blowing.

　　2. They're wearing hoods, masks and glasses to protect themselves.

3. It moves very slowly. Because it is not clear to see everything on the road and people must