Why you read Vietnamese well and understand nothing spoken
Why listening lags so far behind reading in Vietnamese, the three causes, and how to work out which one is actually stopping you.
#Vietnamese tones
Remembering Vietnamese words: the tone is what fades
Why the meaning of a Vietnamese word stays while its tone slips away, how spaced repetition should be adapted for this, and a workable review schedule.
The six Vietnamese tones, and what the marks actually tell you
What each Vietnamese tone mark means for pitch and voice quality, why two of them involve more than pitch, and how the southern system differs from the northern