  We use the techniques of integral forms to analyse the easiest example of two
dimensional sigma models on a supermanifold. We write the action as an integral
of a top integral form over a D=2 supermanifold and we show how to interpolate
between different superspace actions. Then, we consider curved supermanifolds
and we show that the definitions used for flat supermanifold can also be used
for curved supermanifolds. We prove it by first considering the case of a
curved rigid supermanifold and then the case of a generic curved supermanifold
described by a single superfield $E$.
