Le present perfect relie le passé au moment présent. Il ressemble à notre passé composé : have / has + participe (has avec he, she, it).

• I have visited London. — I've visited London.
• She has lost her keys. — She's lost her keys.

Pour les verbes réguliers, le participe est identique au passé : worked, visited, finished, travelled. Pour les irréguliers, il y a parfois une troisième forme :

Verbe	Passé	Participe
be	was / were	been
go	went	gone
do	did	done
see	saw	seen
eat	ate	eaten
drink	drank	drunk
find	found	found
have	had	had
buy	bought	bought
lose	lost	lost

Toujours have, jamais be — même avec go : She has gone, pas ~~she is gone~~. Questions et négations se font avec have lui-même, sans did : Have you eaten? — Yes, I have. / No, I haven't. Attention : she's peut être she is ou she has — she's lost = she has lost.