最佳答案:1、do和does可以用作实义动词,在一般现在时肯定句中,其中does用在第三人称单数,do用在其它人称中,如: He does his homework everyday. I do excerci
1、do和does可以用作实义动词,在一般现在时肯定句中,其中does用在第三人称单数,do用在其它人称中,如: He does his homework everyday. I do excercise every Fridday. 2、do和does可以用作助动词,完成一般现在时的问句及回答和否定句中,其中does用在第三人称单数,do用在其它人称中,如: Do you love me?/No, I don't. Does he go to school everyday?/Yes, he does. What do you do on Satudays?(第一个do) What does he do every morning? I don't like snakes. He doesn't want to study English. 3、do可以作为实义动词,代替所提问的动作,用在特殊疑问句的各时态中,如: How do you do?(第二个do) What did you do last night? 个人所学归纳,仅供参考。