Hi, To be familiar with is current. It's done. To become familiar with indicates a process ending in "being familiar with". An intermediate learner is familiar. A beginner is becoming familiar. I hope this helps, Stephen

Sorry, I don't know either.

Lawrence, Do you know how to follow the post on Italki ? I mean, if I like your question and wait the answer, how can I know that someone comment on your post. Now, I have to find it again in a long list of questions and check whether anyone answered or not ?