YOU SAID:
for he's a jolly good fellow
INTO JAPANESE
彼はとても良い奴だから
BACK INTO ENGLISH
because he's a very good guy
INTO JAPANESE
彼はとても良い人だから
BACK INTO ENGLISH
because he is a very good person
INTO JAPANESE
彼はとても良い人だから
BACK INTO ENGLISH
because he is a very good person
You should move to Japan!