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3、能运用“was 、were”及其否定形式“wasn’t、weren’t”谈论过去的事情和情况。
Ⅳ Teaching Objectives
Key vocabulary: clean, dirty, wasn't, weren't.
Key structures:
“They weren’t old then. They were young.”
ⅤTeaching aids
Video，ppt, presents
ⅥTeaching procedures
Step1. Warming-up
学生合唱"London bridge is falling down" 活跃课堂气氛，并加上之前教的动作，使学生快速融入课堂教学中。
Step 2. Lead in
学生观看课文P29页part1，并根据图片引导进行空白处填空：
It ___is_____very beautiful. But it ___wasn't_____beautiful then.
从而过渡到复数形式weren't的用法：
They___are_____very beautiful. But they ___weren't_____beautiful then.
学生学习了wasn't和wrern't的用法后，引入新课文: They were young，之后做be动词的现在时和过去式的连线搭配（match）。
Step 3. Presentation
1. 学生观看课文29页part2 的第一幅图视频并带着2个问题观看：
(1）How are they now?
(2) How about then?
视频播放结束后抽取多数学生回答自己的见解，最后展现答案，全班齐读答案:
They are old now
They were young then.
They __weren't__old then.
2. 学生观看课文part2 的第二幅图视频并带着2个问题观看：
(1）How is she ?
(2) How about then?
视频播放结束后抽取多数学生回答自己的见解，最后展现答案，全班齐读答案:
She is tall now.
She was short.