do的过去式是did 做；干；
do的过去分词是done 完毕；了结；
do的第三人称单数： does复数： dos现在分词： doing过去式： did过去分词： done
Someone might find out, and that would never do.
也许有人会发现，那是绝对不行的。
What sort of person would do a thing like that?
什么人会干那样的事呢？
They think I can't do it, but I'll show them!
他们以为我做不了，我却要做给他们看看！
Keep going like that ─ you're doing fine.
就这样做下去——你做得蛮不错嘛。
What is he doing calling at this time of night?
他干吗这么晚了还打电话？
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