Complex sentence: He earned his BA degree from Yale in 1940, his M.A. in 1947, and his Ph.D in 1949.Her has taught classes at Yale since 1947, often to packed lecture rooms.
Split into simpler sentences: He earned his BA degree from Yale in 1940, his M.A. in 1947, and his Ph.D in 1949. He has taught classes at Yale since 1947, often to packed lecture rooms.