Two: the form of the verb be and usage

 

• Be the form of the verb : Now: be, is, am, are , in the past: was, were, present participle: being, past participle: 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 verb usage : behind a noun, adjective, adverb or phrase place for complement;

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 the negative verb / question / answer

Negative verb be : in am, is, are, was, were later added Not , abbreviated formula: 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.

 

Use the verb be asked and answered

-- 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;

[Description: be pre-verb when asking]

 

The note finishing in Cui Rongrong teacher video to explain: https: //www.bilibili.com/video/av2639206