Complex sentence: Toby Issacs is introduced to Degrassi as the smart seventh grader who was best friends with J. T. Yorke and the annoying stepbrother of perky but popular Ashley Kerwin.
Split into simpler sentences: Toby Issacs is introduced to Degrassi as the smart seventh grader who was best friends with J. T. Yorke. He is also the annoying stepbrother of perky but popular Ashley Kerwin.