did 、do后面的动词是否要用原型?列举一两个句子

网友回答

一定要用原形
Did you have breakfast this morning?
Do you study at the weekend?
======以下答案可供参考======
供参考答案1:
原型。疑问句：Do you konw the .....
Did you have/know/eat.....
供参考答案2:
是的，助动词后面的动词要用原型。It did belong to you. What do you want to eat?