There isn't necessarily no way to communicate. It's normally just language (or symbolic) communication. So, you could communicate with hand gestures, pictures,

There isn't necessarily no way to communicate. It's normally just language (or symbolic) communication. So, you could communicate with hand gestures, pictures, etc. One technique is a communication board, with lots of pictures. The person with aphasia would point to the picture of concept they want to communicate. And there are augmentative communication devices, but they are ( in my experience) not terribly useful for an adult w/ aphasia.