1) to arrive

Our taxi had arrived by 9 o'clock yesterday morning.

Let's go. The guests have already arrived.

They will have arrived by the time the meeting stars.

2) to be

I am tired of waiting. Where have you been?

By the time i'm 30 I will have been a famous scientist.

He didn't remember where he had been before the accident.

3) to paint

We will have painted the house by next Tuesday.

She has painted more than 10 pictures already.

I wondered if they had painted the room.