YOU SAID:
He put his arm around...?
INTO JAPANESE
彼は彼女の肩のまわりに腕をまわした。
BACK INTO ENGLISH
He put his arm around her shoulders.
INTO JAPANESE
彼は彼女の肩のまわりに腕をまわした。
BACK INTO ENGLISH
He put his arm around her shoulders.
That didn't even make that much sense in English.