1.It's not too difficult to tell from his gesture the language being spoken.
2.One of the reason English-dubbed foreign films often seem flat is that the gestures just don't match the language.
3.What the nonverbal gestures put across very often and very efficiently is the emotional side of the message.This is clear when a person feel s liked or disliked,as he or she will often communicate emotion"not in what is said but in the way it is said.