Unit 15. I have done (Present Perfect I)
(настоящее совершенное время 1)

His shoes are dirty.	He is cleaning his shoes.	He has cleaned his shoes. (= his shoes are clean now)
They are at home.	They are going out.	They have gone out. (= his are not at home now)

has cleaned/ have gone etc. is the Present Perfect (have/ has + Past Participle*):

I	have ('ve) have not (haven't)	cleaned
we		finished
you		done
they		been
he	has ('s) has not (hasn't)	bought
she		taken
it		begun

have	I	cleaned?
	we	finished?
	you	done?
	they	been?
has	he	bought?
	she	taken?
	it	begun?

We use the Present Perfect for an action in the past with a result now:

- I've lost my passport. (= I can't find my passport now)
- She's (= she has) gone to bed. (= she is in bed now)
- We've bought a new car. (= we have a new car now)
- It's Kay's birthday tomorrow and I haven't bought her a present.
- "Bob is on holiday." "Oh, where has he gone?"
- "Are they still having dinner?" "No, they've finished."

* The Past Participle of regular verbs is -ed:
clean → have cleaned finish → have finished stop → have stopped

The Past Participle of irregular verbs is sometimes the same as
the Past Simple and sometimes different. For example:
the same: lose → have lost make → have make have → have had
different: do → have done see → have seen write → have written

For a list of irregular past participles see:
Appendix 1. List of irregular verbs and
Appendix 2. Irregular verbs in groups

See Unit 16. Have you ever … (Present Perfect 2)
See Unit 17. How long have you … (Present Perfect 3)
See Unit 19. I have done … (Present Perfect) and I did … (Past Simple)
See Unit 89. Present Perfect + yet

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Unit 15. I have done (Present Perfect I) (настоящее совершенное время 1)

Unit 15. I have done (Present Perfect I)
(настоящее совершенное время 1)