We use adverbs of frequency to talk about how often something happens in a period of time.
Adverbs of frequency talk about how often something happens (0% – 100 % of the time).
There are two places where you can find an adverb of frequency in a sentence:
• after a be verb or before most other verbs (not be verbs).
Rarely, hardly ever, and never are negative adverbs of frequency and should not be used with “no” or “not.” Instead, use a positive adverb of frequency, like always, usually, sometimes, or occasionally.
never don’t eat dessert. → I always eat dessert.