have been done语法

The phrase "have been done" is the present perfect passive form of the verb "do." It is used to indicate that something has been completed or accomplished by someone or something in the past, and the emphasis is on the action itself rather than the doer.

Example sentences:

1. The dishes have been done by my sister. (The action of doing the dishes has been completed by my sister.)
2. All the preparations have been done for the event. (The preparations for the event have been completed.)
3. The repairs have been done on the car. (The car has been repaired.