8.7 go on doing/to do

go on to do　做了一件事后，接着做另一件事。
go on doing　 继续做原来做的事。

　 After he had finished his maths，he went on to do his physics.
　 做完数学后，他接着去做物理。
　 Go on doing the other exercise after you have finished this one.
　 作完这个练习后，接着做其他的练习