英语中,什么时候用isn't aren't 和not

英语中,什么时候用isn't aren't 和not 英语什么时候用疑问句什么时候用肯定句,什么时候用isn'和aren't等等 isn't it 和aren‘t you区别是什么啊?什么时候用aren’t you?什么时候用isn‘t it? 什么时候用does/doesn't 和isn't/is are/aren't 用am not,aren't,isn't,can't,don't,doesn't填空 There aren,t 和There isn,t 用am not.aren't.isn't.don't.doesn't.来完成句子. 什么时候用don't you,什么时候用will you,什么..isn't you ...Shall we aren' 用am/are/is/am not/isn't/aren't 填空:There _____any rulers on t not/isn't/aren't+（ ）是（ ）定句 用am/are/is/am not/isn't/aren't 填空：Your cousin_______ a cute 用am / are /is/am not /isn't/aren't 填空：The and I _____friends