精选优质文档-倾情为你奉上be 动词专练be 动词用法歌： 我用 am,你用 are，is 连接他，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。解析: I am; You are; He is; She is; It is; We are; You are; They are.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 _
