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2) They are blue .
They aren’t blue.
3) He is Kangkang.
He isn’t Kangkang .
1.句子中有be，在be后加not。
1) I have a book .
I don’t have a book.
2) They like Chinese .
They don’t like Chinese.
3) We come from China.
We don’t come from China.
2.谓语是动词原形，在动词前加don’t。
3.谓语动词是第三人称单数，在动词前加doesn’t，动词用原形。
1)She has a small mouth.
She doesn’t have a small mouth.
2)Maria likes China.
Maria doesn’t like China.
3)Jane comes from the U.S.A.
Jane doesn’t come from the U.S.A.
练习：将下列句子变成否定句。
1. I am a teacher. I a teacher.
2. We are students. We students.
3. Jane is a girl. Jane a girl.
4. They like English. They like Chinese
5. I come from China. I come from China.
6. He likes Chinese. He like Chinese.
7. Maria comes from Cuba.
Maria come from Cuba.
8. We know Maria. We know Maria.
二、肯定句变一般疑问句