sentence: He started playing with the Montreal Jr. Royals for three seasons from 1947 to 1950, and made his debut with the Montreal Canadiens in the middle of the 1951–52 season.
modified: fix grammar: He started playing with the Montreals Jr.s Royal for three season from 1947 to 1950, and made his debuts with the Montreals Canadien in the middles of the 1951–52 seasons.