主要变化形式:do,did,done
动名词/现在分词: doing
现在时:
作普通动词用的do的肯定式如上所示,但是它的否定式和疑问式需要在上述形式前再加上do:
What does/did she do?
她干什么工作?
过去时:
I dont know.
我不知道。
Did you see it?
你看到过没有?
He doesnt like me.
他不喜欢我。
接受吧,这世界充满潜规则
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