1、Be 动词的否定句表示汉语意思“是” ，用“be 动词”包括“am, is ,are”。I 用 am，三单 is，其他 are。表示“不是” ，也就是否定，只需在“be 动词”后面加 not（不） 。肯定句 否定句I am a mother. I am not a mother.He is is brother. He is not a brother.She is a sister. She is not a sister.It is a dog. It Is not a dog.We are sisters. We are not sisters.You are brothers. You
2、 are not brothers.They are boys. They are not boys.Have/has “有”的否定句有：have/has。三单 has，其他 have。表示“have ”的否定句，在 have 前加“dont ”，就是 dont have。表示“has”的否定把“has”改为 have，再在前面加“doesnt” ，就是 doesnt have。肯定句 否定句I have a mother. I dont have a mother.He has a brother. He doesnt have a brother.She has a sister. She doesnt have a sister.It has a mouth. It doesnt have a mouth.We have sisters. We dont have sisters.You have brothers. You dont have brothers.They have hands. They dont have hands.
