牛津小学英语时态复习及专项练习语法及练习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 Am I a Chinese? Yes, you are. No, you arent. Are they American? Yes, they are. No, they arent. Is the cat fat? Yes, it is. No, it isnt.用恰当的be动词填空。1. I _ a boy. _ you a boy? No, I _ not.2. The girl_ Jacks sister.3. T