系动词 Be(am, is, are)的用法一、请记住以下口诀：我用 am，你用 are，is 连着他，她，它；单数名词用 is，复数名词全用are。变疑问，往前提，句末问号莫丢弃。变否定，更容易， be 后 not 莫忘记。疑问否定任你变，句首大写莫迟疑。二、 Be 动词在一般过去时中的变化：1．am 和 is 在一般过去时中变为was。（ was not = wasn’t）2．are在一般过去时中变为were。（ were not = weren’t）3．带有 was 或 were 的句子，其否定、疑问的变化和am,is, 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。相关练习题一、用 am, is, are 填空1. I ______ a boy. ______ you a boy? No, I _____ not. 2. The girl______ Jack's sister. 3. The dog _______ tall and fat. 4. The man with big eyes _______ a teacher. 5. ______ your brother in the classroom? 6. Where _____ your mother? She ______ at home. 7. How _______ your father? 8. Mike and Liu Tao ______ at school. 9. Whose dress ______ this? 10. Whose socks ______ they? 11. That ______ my red skirt. 12. Who ______ I ? 13.The jeans ______ on the desk. 14.Here ______ a scarf for you. 15. Here ______ some sweaters for you. 16. The two cups of milk _____ for me. 17. Some tea ______ in the glass. 18. Gao shan's shirt _______ over there. 19. My sister's name ______ Nancy. 20. This ______ not Wang Fang's pencil. 21. ______ David and Helen from England? 22. There ______ a girl in the room. 23. There ______ some apples on the tree. 24. _______ there any kites in the classroom? 25. _______ there any apple juice in the bottle? 26. There _______ some bread on the plate. 27. There _______ a boy, two girls, three men and ten women in the park. 28. You, he and I ______ from China. 二、用 be 动词的适当形式填空1. I _______ at school just now（刚才） . 2. He ________ at the hotel last week. 3. We ___...
