May or Might?
Exemple : ‘’I may leave quite soon.’’
The words "may" and "might" can be used interchangably. However, some people would argue that "may" should be used when talking in the present about something which will possibly be done.
Exemple : ‘’He might have gone to the shop on his way home.’’
Therefore it could be argued that "might" should be used when talking in the past tense about something which was possibly done.