"Agree" no significa "acuerdo" sino "estar de acuerdo". "Estoy de acuerdo" es "I agree". "I am agree" no tiene sentido en inglés.
una mejor traduccion de agree es el verbo concordar. Yo concuerdo contigo = I agree with you
"I agree" y "I am in agreement"
"I am Agree" is wrong because Agree is a verb. It's like saying: I am walk! The correct expression is of course "I walk" or "I agree" or if you insist on expressing what you are, you can say "I am agreeable."
Ooooo.... thaks for explaining...
Creo que tambien podría decirse: "I am okay with this plan".
Oh God, just now I have seen a stupid mistake all this time :S