Should have done意思

"Should have done" is a construction used to express regret or criticism about something that was not done in the past. It is a form of the verb "should" combined with the past participle of another verb. Here are a few examples of how it might be used:

  1. "I really should have studied more for the exam." (Expressing regret about not studying enough.)
  2. "You should have called me earlier." (Expressing criticism or disappointment about a lack of earlier communication.)
  3. "We should have left earlier to avoid the traffic." (Expressing regret about not leaving at an earlier time.)

In each of these examples, the speaker is pointing out that there was something that should have been done but wasn't. The "should have" construction is often used to talk about actions that were not taken or things that were not done, and it can imply a sense of missed opportunity or failure to take the right action.