Complex sentence: The series charts the lives of Frank Gallagher, an intelligent but wasteful alcoholic and his large, dysfunctional family, but as the show progressed it also widened the scope to include other occupants of the Chatsworth Estate notably the Maguire family.
Split into simpler sentences: The series charts the lives of Frank Gallagher, an intelligent but wasteful alcoholic, and his large, dysfunctional family. But as the show progressed, it also widened the scope to include other occupants of the Chatsworth Estate, notably the Maguire family.