Question

问句的开头什么时候用do，does，什么时候用are，I，is？

不是，是问句的开头，比如Do you什么或Are you 什么，怎么区分

Answer 1

第一，二人称或复数用do 第三人称或单数用does
weare，you are ,thay are,
I am
he,she,it 用 is

Answer 2

要看第几人称了，如果第三人称就用does，其它用do。

Answer 3

I, you, we, they 用do
he, she, it 用does

I用am
you，we，they 用are
he，she，it用is

就是我说的这样：Do I? Do you? Do we? Do they?
Does he/she/it?
Am I?
Are you/they/we?
Is he/she/it?