Word Choice

Continual and continuous are both used to describe things that continue without stopping.

Use continuous to describe things that go on without a break.

E.G. I had six continuous hours of meetings.

E.G. A continuous line of trees.

Use continual to describe things which happen repeatedly.

E.G. his continual attempts to intervene.

Use continual when the thing that is happening is annoying or bad.

E.G.  She was fed up with the continual arguments.