Be动词用法检测be 动词用法歌: 我用 am,你用 are,is 连接他,她,它。所有复数名词都用 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。 用 am, is, are 填空 1. I _ a boy. _ you a boy? 2. The girl_ Jacks 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? 7. How _ your father? 8. Mike and Liu Tao _ at school. 9. Whose dress _