went on sleeping
涉及到go on to do 和go on doing 这两个词组
go on to do是继续做另外一件事
go on doing 是继续做同一件事
turn over是翻身的意思,说明他之前在睡觉,听到消息后,翻个身继续睡.
所以用went on sleeping
He went on to watch TV after he answered the telephone.
这里就要用go on to do,因为前后不是同一件事.