Question

what us adverb of frequency​

Answer 1

Adverb of frequency means how many times it has occurred

Answer 2

Explanation:

An adverb of frequency describes how often an action happens. There are six main adverbs of frequency that we use in English: always, usually (or normally), often, sometimes, rarely, and never. ... A good way to explain the difference in frequency is by using % as you can see in the picture below.