动词 do 怎么用 时态：一般现在时；
主语人称：除第三人称单数外的所有人称；
意思：做；
linestart
I do homework every day.
We do
You do
They do
The girls do
My brothers do
lineend
does 怎么用
主语人称：第三人称单数（She/He/It/Tom/Lily/The dog/My mom)；
时态：一般现在时；
意思：做；
linestart
She does
He does
It does
Tom does
Lily does
The dog does
My mom does
lineend
doing 怎么用
意思：正在做（do的现在分词）；
人称：所有人称；
时态：现在进行时、现在完成进行时、过去进行时、过去完成进行时、将来进行时、将来完成进行时、过去将来进行时、过去将来完成进行时；
linestart
I am doing homework right now.
She is doing
He is doing
It is doing
Tom is doing
Lily is doing
The dog is doing
My mom is doing
We are doing
You are doing
They are doing
The dogs are doing
The brothers are doing
lineend
did 怎么用
意思：做了，强调行为（do的过去式）；
时态：一般过去时；
主语人称：所有人称；
linestart
I did homework yesterday.
We did
You did
They did
The girls did
My brothers did
She did
He did
It did
Tom did
Lily did
The dog did
My mom did
lineend
done 怎么用
意思：做过，强调行为的影响（do的过去分词）；
人称：所有人称；
时态：现在完成时、过去完成时、将来完成时、过去将来完成时；
linestart
I have done homework.
We have done...
You have done
They have done
The girls have done
My brothers have done
She Has done
He Has done
It has done
Tom has done
Lily has done
The dog has done
My mom has done
lineend
否定式
do not = don't
does not = doesn't
did not = didn't
