Present continuous (I am doing) Use the continuous for something that is happening at or around the time of speaking. The action is not finished. - The water is boiling. Can you turn it off? - Let's go out. It isn't raining now. - I'm going to bed now. Geednight! Present simple (I do) Use the simple for things in general or things that happen repeatedly. - Water boils at 100 degrees celsius. - E..