This document discusses adverbs of frequency and time expressions that are used to describe how often certain actions occur. Some examples provided are using "usually" to indicate something is done often but not always, "sometimes" for occasional occurrences, "always" for something done regularly without exception, and "never" to mean something is not done at all. Precise time expressions like "every day", "once a week", "twice a year", and "three times a day" are also given to quantify frequency.