He's become very withdrawn and non-communicative, and I don't know how I can make him understand that I need to make sure things are still alright between us.

The process of teaching a second language in classroom should be a continuous one that leads and deepens the non-communicative introduction of language structure to the goal of communication.

It is the absence of information gap in much of the language teaching process that makes it non-communicative. Information gap is a necessary element that motivates people into communication.