语法及练习1 be动词Be 动词的用法： (1) Am-was Is -was Are-were 口诀：我用am, 你用are, is用在他她它，复数全用are。(2) 肯定和否定句 I am (not) from London. He is(not) a teacher. She is(not) in the dining room. My hair is(not) long. Her eyes are(not) small. (3) 一般疑问句 Are you a Chinese? Yes, I am. No, I amnt. Are they American? Yes, they are. No, they arent. Is the cat fat? Yes, it is. No, it isnt. 语法及练习2 人称代词和物主代词人称代词和物主代词 1人称代词主格和宾格的区别：主格通常位于句中第一个动词之前（有时候位于than 之后），宾格一般位于动词或介词之后。 2物主代词形容词性与名词性的区别：形容词性用时后面一般要
