Present continuous
When? 
- things that are happening at the moment. 
(currently, right now, now, at the moment) 
How?
We can make the present continuous by:
using the verb 'to be' + verb-ing
> He is working right now.
Examples
Pos.            They are swimming at the moment.
Neg.           They aren't swimming at the moment.
Quest.        Are they swimming at the moment?
Pos.            Jenny is baking a cake.
Neg.           Jenny isn't baking a cake.
Quest.       Is Jenny baking a cake.