最佳答案:I have a cat.I don't have a cat.Do you have a cat?Yes,I do.No,I don't.
最佳答案:疑问句:Are you a student?肯定回答:Yes,i am .否定回答:No,i am not.肯定句:I want to fly.否定句:I do
最佳答案:这些问题要全部回答,可以写成几十页的书,而且效果不一定好.建议你习一本好一点的语法书,仔细研究.
最佳答案:一般现在时 1.She is a good student. Is she a good student? Yes,she is. /No, she isn't