Complex sentence: He commenced academic work as a lecturer at the department of Chemical engineering, University of Lagos, in 1982 and became Senior Lecturer and successively, Associate Professor of Chemical engineering and continued lecturing at the University of Lagos until 1988.
Split into simpler sentences: He commenced academic work as a lecturer at the department of Chemical engineering, University of Lagos, in 1982 and became Senior Lecturer and successively, Associate Professor of Chemical engineering. He continued lecturing at the University of Lagos until 1988.