"perfect participle"的定义和意义

What is the "perfect participle"?

The perfect participle is a verb form that combines "having" with the past participle of a verb, used to indicate an action that was completed before another action in the past. It expresses a relationship between two events, highlighting that one event occurred prior to the other. For example, in the sentence "Having finished her homework, she went out to play," "having finished" shows that the action of completing homework happened before she went out to play. The perfect participle is useful for creating complex sentences that clarify the timing and sequence of actions.