(1) Do/Does + 主詞 + 原形動詞 --> 形成疑問句
Do you take a shower every day? 你每天洗澡嗎?
Does he go to school on Friday? 他星期五上學嗎?
(主詞為第三人稱單數時,Do 改成Does)
(2) 主詞 + do/does + not + 原形動詞 --> 形成否定句
I do not stay up late. 我不熬夜的。
Mary does not study hard. 瑪莉並不用功。
(主詞為第三人稱單數時,do 改成does)
(3) do/does 做「本動詞」時,疑問句和否定句仍需要加上當「助動詞」用的do/does
What do you do every evening? 你晚上都做些什麼?
(助動詞) (本動詞:解釋為「做」)
He does not do homework on Sunday. 他不在星期天做作業。
(助動詞) (本動詞)
(4) 簡答時使用
A: Do you exercise?
B: Yes, I do.
A: Does he smoke?
B: No, he does not.
注意: 若疑問句有be動詞,或其他助動詞,則不可使用do/does做簡答。
A: Are you a teacher?
B: Yes, I am. (不可用Yes, I do.)
A: Can you swim?
B: Yes, I can. (不可用Yes, I do.)