现在进行时:I'm watching TV. I'm not watching TV. Are you watching TV? What are you doing?
一般将来进行时:I'm going to school. I'm not going to school. Are you going to school? What are you going to do?
一般现在时:I have a book. I don't have a book. Do you have a book? What do you have?
一般过去时:I did my homework. I didn't do my homework. Did you do your homework? What did you do?
肯定形式
主语+动词过去式+其它。
例句:She came to help us in those days。
否定形态
主语+didn't +谓语动词原形+其它。
1.在行为动词前加didn't,同时还原行为动词。
例句:I didn't know you like coffee。
现在进行时,一般将来时,一般现在时,一般过去时好像少了一个吧还少了一个特殊疑问句