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2. Ability aims:
1)Be able to talk about what people were doing according to the pictures.
2)Improve Ss’ listening and speaking skills.
3. Moral aims:
Arouse students’ motivation and interest in learning English and guide them to love natural and social science.
学情分析：
八年级学生以有了一定的英语基础和听说能力，对英语学习有了较浓厚的兴趣。经过新课程的实践，学生有了初步自主合作和探究的能力，有了很强的团队协作能力。七年级下册就学过现在进行时,对其结构和用法学生都能够掌握和熟练运用。因此，为本课的学习奠定了良好的基础。
Teaching Key and Difficult points
1. Key points:
1)Master the key words and sentences
2) Master the usage of the past progressive tense
2. Difficult points:
Learn how to use the past progressive tense in different forms.
Teaching procedures
Step1.Warm-up
Greet the class
Step2.Lead-in
1.Look at some pictures and talk about what people are doing now and what people were doing at certain time in the past.
e.g. —What is the boy doing? —He is sleeping.
—What was he doing at 9 yesterday evening? —He was doing his homework.
—What is the girl doing? —She is running.
—What was she doing at seven yesterday morning? —She was running.
—What are you doing now? —We are having a English class.
—What were you doing at this time last Sunday? —We were having a sports meeting.
2.Compare the present progressive tense and the past progressive tense
现在进行时
过去进行时
含义： 表示现在正在进行的动作
含义：表示过去某个时刻正在进行的动作
结构： is/am/are + doing