Step1 Lead-in 1.Free talk 2.呈现课文插图的四幅照片,要求学生观察图片并思考问题,引出本单元的话题。 T: What can you see in the picture? Ss: The boy is brushing his teeth. The tap is running. T: Is that right? Ss: No….. Step 2 Presentation 1.利用图片教授目标词汇plastic, coal, oil ,paper,wood,water 2呈现另一组有关原材料应用的图片; T: We use water to wash clothes/ brush teeth/ cook food. We use coal to make electricity. We use oil to make gas. We use paper to make books. We use plastic to make bags/bottles/ toys. We use wood to make desks /beds/ boats. We use mental to make cars/trains/ships. We use glass to make bottles/windows. 3.播放课文动画,整体呈现课文,让学生了解保护地球的四个方面。 How can we protect the Earth? We can save water. We can save energy. We can save trees. We should not use too much plastic. 4.学习第一段,完成表格
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