• Be动词的形式：现在：be, is, am, are, 过去：was, were, 现在分词：being, 过去分词：been;

1. The man is back.
2. They are back.
3. He was back.
4. They were back.
5. They have been back. (备注：现在完成时)

• Be动词的用法：后面接名词，形容词，地点副词或短语作补足语；

1. The man is a teacher;
2. Mary`s new dresses are colorful;
3. My mother was in the kitchen;

 

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• Be动词的否定/ 提问/ 回答

be动词的否定：在am, is, are, was, were 后面加 not，缩略式：am not, isn`t, aren`t, wasn`t, weren`t

1. The man isn`t back;
2. I am not back;
3. They aren`t back.
4. He wasn`t back.
5. They weren`t back.

 

使用be动词提问和回答

-- Is he a teacher? -- Yes, he is. / No, he isn`t;
-- Are you a teacher? -- Yes, I am. / No, I am not;
-- Were they teacher? -- Yes, they were. / No, they weren`t;

[说明：提问时be动词前置]

 

该笔记整理于崔荣容老师的视频讲解：https://www.bilibili.com/video/av2639206