1一、口诀：我用 am, 你用 are, is 用在他她它，复数全用 are。 例题： 1. I _ a boy. _ you a boy? No, I _ not. 2. The girl_ Jacks sister. 3. The dog _ tall and fat. 4.The jeans _ on the desk. 二、有 be 动词的肯定句和否定句 I am from London. I am not from London. He is a teacher. He is not a teacher. She is in the dining room. She is not in the dining room. My hair is long. My hair is not long. Her eyes are small. Her eyes are not small. 三、有 be 动词的一般疑问句Am I a Chinese? Yes, you are. No, you arent. Are they American? Yes, they are. No, they arent. Is the cat fat? Yes, it is. No, it isnt. 四、 Be 动词在一般过去时中的变化：am-was is -was are-were am 和 is 在一般过去时中变为 was。 （was not=wasnt）are 在一般过去时中变为 were。 （were not=werent）带有 was 或 were 的句子，其否定、疑问的变化和 is, am, are 一样，即否定句 在 was 或 were 后加 not，一般疑问句把 was 或 were 调到句首。 例题： I _ at school just now. 2. He _ at the camp last week. 3. We _ students two years ago. 4. They _ on the farm a moment ago. 5. Yang Ling _ eleven years old last year. 6. The mobile phone _ on the sofa yesterday evening. 五、there be 句型中 be 动词的用法 1、在 there be 句型中，主语是单数，be 动词用 is；主语是复数，be 动词用 are； 如有几件物品，be 动词根据最近 be 动词的那个名词决定。 2、there be 句型的否定句在 be 动词后加 not，一般疑问句把 be 动词调到句首。例题： 1、There_ a lot of sweets in the box. 2、There_ some milk in the glass. 3、There_-some people under the the big tree. 4、There_ a picture and a map on the wall. 六、综合练习 用恰当的 be 动词填空。 1. The man with big eyes _ a teacher. 2. _ your brother in the classroom? 23. Where _ your mother? She _ at home. 4. How _ your father? 5. Mike and Liu Tao _ at school. 6. Whose dress _ this? 7. Whose socks _ they? 8. That _ my red skirt. 9. Who _ I? 10. Here _ a scarf for you. 11. Here _ some sweaters for you. 12. The black gloves _ for Su Yang. 13. This pair of gloves _ for Yang Ling. 14. The two cups of milk _ for me. 15. Some tea _ in the glass. 16. Gao shans shirt _ over there. 句型转换 1. It was exciting.否定句：_ 一般疑问句：_ 肯、否定回答：_ 2. All the students were very excited.否定句：_ 一般疑问句：_ 肯、否定回答：_ 课后练习 根据句意，用 be 动词的适当形式填空 1. My sisters name _Nancy. 2. This _ not Wang Fangs pencil. 3. _ David and Helen from England? 4. There _ a girl in the room. 5. There _ some apples on the tree. 6. _ there any kites in the classroom? 7. _ there any apple juice in the bottle? 8. There _ some bread on the plate. 9. There _ a boy, two girls, three men and ten women in the park. 10. You, he and I _ from China. 11.There_ a box of rubbers near the books. 12.There_ lots of flowers in our garden last year. 13.There_ a tin of chicken behind the fridge yesterday. 14.There_ four cups of coffee on the table. 15. There _ an apple on the plate yesterday. 16. There _ some milk in the fridge on Sunday. 句型转换 1. They were in his pocket.否定句：_3一般疑问句：_ 肯、否定回答：_