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be动词的过去式的变化。以及含有be动词过去式的否定疑问变化。
教学媒体：多媒体，平板，幻灯片，视频，网络。
教学过程：
导入：此部分由课代表来主持，通过白雪公主的故事来导入。
( LT: little teacher Ss: Students )
LT: Look at the screen, do you know her? Ss: Snow White.
LT: But can you tell the story in English? And do you know what tense do we use?Ss: 一般过去式。
LT：Ok, this class. We will learn past tense. Now, according to the screen to study by yourselves. Let’s begin.
训练展示：
Step1: 解决疑难—①be动词的过去式的变化。
方法：由已知推未知，根据图片用am，is，are来造句子。然后用be动词的过去式来替换句子，从而推出技巧。
I was a student.
She was young.
They were students.
I am a teacher.
She is old.
They are students.
总结技巧：
原形
am
is
are
过去式
was
was
were
进一步总结：
原形
am / is
are