人教版七年级英语上册知识点 be动词用法(一般现在时态) 宣威市文兴乡一中 徐玉娥 1.运用口诀：我用am，你用are， is跟着他(he)她(she)它(it)，单数用is，复数用are.用法演示： 1. I am a girl. 2. You are a teacher. 3. He is my father. 4. She is fine. 5. It is a ruler. 6. His pen is red. 7.My cat is nice. 8. We are friends. 9. They are good boys.2.句型转换：否定句： 在be动词am,is,are后加not,并作相应的缩写为 amnt, isnt, arent.一般疑问句： 把be动词 am, is, are提到句首，大写首字母,句末加问号，读为升调. 肯定回答用: Yes, 主语+ am /is /are. 否定回答用: No, 主语+amnt / isnt /arent.例句演示：1. You are a boy.You arent a boy. Are you a boy? Yes, I am. (肯定回答不能缩写肯定回答不能缩写.) No, Im not.2. It is a green ruler. It isnt a green ruler. Is it a green ruler? Yes, it is. No, it isnt.3. Im a good student. Im not a good student. Are you a good student? (变为一般疑问句时第一人称换为第二变为一般疑问句时第一人称换为第二人称人称) Yes, I am.(肯定回答不能缩写肯定回答不能缩写.) No, Im not.4. This is my key. This isnt my key. Is this your key? Yes, it is.(肯定回答不能缩写肯定回答不能缩写.) No, it isnt.注：以注：以this,that 作主语的问句，回答用作主语的问句，回答用Yes, it is. No, it isnt. 而以而以these, those作主语作主语的问句，回答用的问句，回答用Yes, they are. No, they arent.Thank youThank youThank you!11