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⑵培养学生的观察能力和交际能力。
③情感目标：鼓励学生合理健康饮食，饮食均衡，不要偏食。
重点，难点：
① 重点：掌握重点句型。
突破方法：通过层层提问引出重点句型，让学生在情景中理解句型，在朗读中巩固句型，在交际中运用句型。
② 难点：能运用所学句型来比较体重，身高，脚的尺寸等。
突破方法：通过情景对话，小组练习等多种方式掌握并运用所学句型。
教法与学法：
情景教学法，直观教学法，任务教学法，交际教学法，小组合作法。
教学准备：录音机，卡片，ppt
教学过程：
Warm-up: sing an English song, If You Are Happy . Then divide the class into several groups. They aim to arouse the Ss learning interest.
Lead in : review the last lesson easily--younger, older, taller, shorter ,longer, and ask Ss to make sentences by using these words. It aims to make some preparations for presentation.
Presentation : ⑴the presentation of new words :design a scene to lead the new words--bigger heavier and kilograms.
T: Look at the picture. What are they ?
Ss: They are shoes.
T: Are they small?
Ss: Yes , they are.
T: Are they big?
Ss: Yes , they are.
T: So these one are bigger than those one.
By this way, to lead the new words, and then to practice them . I will emphasis on the pronunciation of vowels.
⑵the presentation of target sentences :ask Ss to listen to the radio and answer my questions.
T: Who are they?
Ss: They are Mike and Wu Yi fan .
T: Where are they?
Ss: They are in the shop.
T: What are they doing?
Ss: They are buying shoes.
T: What size are mike’s shoes?