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能够根据图片和信息提示词描述沙尘暴形成的过程。
3. Emotional aims: (optional)
让学生了解环境污染的严峻形势，引导学生爱护大自然，爱护花草树木，树立绿色环保意识。
4. Culture awareness: (optional)
通过课文的学习，让学生了解沙尘暴形成的原因和过程，关注全球的环境问题。
Ⅱ. The key points and difficult points
1. Key points:
Words and phrases: sand, although, sandstorm, desert, human being, reduce, completely, change into, stop … from, blow/ wash … away,
as a result
Sentences: A lot of water can be saved by forests.
Although we have built “The Green Great Wall”, we still need to do something to protect the environment.
Grammar: Indefinite pronoun and adverb.
Difficult points：
能够从所听材料中获得有效的细节信息来补全句子。
能够根据图片和信息提示词描述沙尘暴形成的过程。
III. Teaching aids
关于沙尘暴的视频和图片，录音机，幻灯片等。
IV. Teaching Plan
Step 1. Lead-in
1. Greeting
T:Good afternoon, everyone!
Ss: Good morning, Mrs. Wang.
2. Play a short video about a sandstorm and let ss guess what kind of weather it is.
Step 2. Presentation
1. Show the pictures of a sandstorm, let the Ss guess how sandstorm comes into being.
2. Present the picture in 1a. Let the ss listen to 1a once and do 1b alone.
T: Right. Now look at this picture. What’s the weather like?
S1: It’s a sandstorm.
T: How do you like the weather?
S2: I think it’s terrible.