1.能聽、說、讀、寫本課的核心詞匯：air, everywhere , alive, smoke,factory, smoke, dirty, clean, plant

　　2.能熟練掌握核心句型： It keeps them high in the sky.

　　3.讀懂描述空氣污染的對話。

　　重點難點：

　　1.能在語境中正確使用本單元的核心詞匯。

　　2.能用句型It keeps them high in the sky.描述空氣的作用。

　　教學用具：

　　錄音機、自制課件、照片等

　　教學過程：

　　StepⅠWarm up and revision（熱身與復習）

　　1. Greetings.

　　2. Guessing game.

　　Step ⅡPresentation and practice （自主探究）

　　1.生詞關

　　T: Please write the meanings on your paper

　　air______ smoke ______ factory ________ dirty________ clean ______

　　alive _________ everywhere_______ important ______

　　2. Learn the new words.

　　T: Let’s listen and say the new words.

　　Ss: read these words after teacher.

　　3. Work in groups to read the new words. Recite the new words, and then recite in groups。

　　4. Watch the screen and learn to say the sentences.

　　5. Ask pupils to talk about the famous cities of the world in groups .

　　Sept ⅢLearn the story （文本學習）

　　T: Here’s a riddle. It’s very long one. Please listen carefully and guess what it is. What is it?

　　Ss: Air.

　　T: Yes, What do you think of air?

　　S1: Air has no colour.

　　S2: Air has no smell and taste.

　　S3: …

　　T: Yes. We can’t see it,but we can feel it. Air is important to

　　all living things.

　　T: Can you talk about air? Work in groups .

　　Ss: talk each other.

　　Tasks the pupils to answer the questions on Page 69.

　　Step ⅣConsolidation（拓展延伸）

　　Think and say: 模仿課文，介紹一樣。

　　教學反思：

　　大部分學生能掌握本課的核心詞匯和核心句型，小組討論，談一談對空氣的認識，學生積極踴躍，大膽表達，教學效果較好。