Perfectively
与完成时有关, 关于完成时
🗣️ 情景例句
We can't get this bow tie tied.
我们打不好领结。
I'm too busy.
我太忙。
What should I do? Maybe I should have told that workmate I knew what he was doing.
我该怎么办？也许我早该对那个工人说我知道他的行为。