Don't say he gave me a recommend, but say he gave me a recommendation.
Don't say the two first for the first two.
Don't say he learnt me French; say he taught me French.
Don't say lit the fire; say lighted the fire.
Don't say the man which you saw; say the man whom you saw.
Don't say who done it; say who did it
Don't say if I was rich I would buy a carriage; say if I were rich.
Don't say if I am not mistaken you are in the wrong; say if I mistake not.
Don't say who may you be; say who are you?
Don't say go lay down; say go lie down.