I've learnt a lot since I've known him.
what is this?
'Learnt' is incorrectly spelled, as in "Ah've larnt alot since Ah've known 'im."
The spelling is fine.
I don't see abything wrong. The past participle of learn is learned or learnt
i've learnt a lot since I know him
i think it's " I've learnt a lot since i knew him" nothins wrong with learnt or i've / learned= learnt- i've = ah've
spelling is correct.the action of knowing him is longer then the first, i spent a long time knowing him before i have learnt something so i prefer "i've learnt a lot since i knew him"
Its "I've learned" a lot. If it said "since I knew him", it would be correct.
that is the correct answer
I totally agreed with dalila.
I’ve learn a lot since Ikhnew him