1. I now grunt to express the affirmative, to agree, or to acknowledge someone talking to me.
The Chinese have a habit of grunting rather than using full syllables to communicate. You call someone’s name, “ehh” comes back in response. You’re telling a story, “uh, uh, uh” keeps you talking, progressing forward to the interesting part. You ask a question, “mm” can be understood in the affirmative. This works somehow, and now I’m doing it.