be动词 一Be 动词的用法：1. Be动词包括：am ,is , are.2. Be动词的含义为“是”或“在”。3. Be动词的使用口诀：Be动词真伟大，生出am is are,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。4.肯定和否定句 I am (not) from London. He is(not) a teacher. She is(not) in the dining room. Her eyes are(not) small. 5.一般疑问句 Am I a Chinese? Yes, you are. No, you arent. Is the cat fat? Yes, it is.
