设计任务:请阅读下面学生信息和语言素材,设计一个25分钟的听力教学活动 。  教案没有固定格式,但须包含下列要点:  ● teaching objectives  ● teaching contents  ● key and difficult points  ● major steps and time allocation  ● activities and justifications  教学时间:25分钟  学生概况:某城镇普通中学高中一年级学生,班级人数40人 。多数学生已经达到《普通高中英语课程标准(实验)》五级水平 。学生课堂参与积极性一般 。  语言素材:  Why do earthquakes happen? Scientists explain that the outside of the earth is made of a number of different plates . At San Francisco, the Pacific plate which is moving towards the northwest meets the North American plate . The Pacific plate is moving very slowly-at 5 .3 centimeters a year . Sometimes these two plates stop and do not move for years . Then suddenly, they jump and an earthquake is felt . As a result of the movement of these plates, California has always had a lot of earthquakes . When the 1906 earthquake happened, the Pacific plate jumped 5-6 meters to the north .  China also has an unlucky place on the earth . The Pacific plate is also pushing on China from the east as the plate moves west . Likewise, the Indian plate is pushing on China from the southwest as that plate moves northeast . The same power that produced the great Himalayan Mountains now causes earthquakes in China .  We cannot stop earthquakes, but we can do things to make sure they do not destroy whole cities . First, it is not a good idea to build houses along the lines where two of the earth's plates join together . Second, if you think there may be an earthquake, it is better to build houses on rock than on sand . Third, you must make the houses as strong as possible . Weak buildings will fall down in an earthquake, but strong ones may stay up .

发布于 2021-04-29 16:31:47

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