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
要看第几人称了，如果第三人称就用does，其它用do。
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?
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