Complex sentence: The third games took place in Pune, India, also like a test event in 2008 for the 2010 main Commonwealth Games, and the fourth is scheduled to take place in Douglas, Isle of Man, in 2011.
Split into simpler sentences: The third Games took place in Pune, India, in 2008, and were viewed in part as a test event for the 2010 main Commonwealth Games. The fourth Games are scheduled to take place in Douglas, Isle of Man, in 2011.