YOU SAID:
He went abroad for the purpose of studying English.
INTO JAPANESE
彼は英語を勉強する目的で海外へ行った。
BACK INTO ENGLISH
He went abroad to study English.
INTO JAPANESE
彼は英語を勉強するために海外へ行きました。
BACK INTO ENGLISH
He went abroad to study English.
That didn't even make that much sense in English.