In this unit, adverbs that refer to how often something happens are discussed, including always, usually, frequently, often, sometimes, occasionally, seldom, rarely, and never. Adverbs of frequency describe how often or how little something happens.
Common adverbs of frequency are: sometimes, often, always, never, all the time, frequently, regularly, and rarely.
Adverbs of frequency can occur at the beginning, middle (between the subject and the main verb, but after a form of “be”: She is always late), or end of a sentence. “Always” and “never” do not normally start a sentence. Adverbs that are longer phrases (e.g. “from time to time”) can only be at the beginning or end of sentences.
Examples:
We often go out together. (We go out on many occasions/in many instances.)
She never calls me. (She calls at no point in time.)
They always let me know. (They let me know every time, on every occasion.)
He does this all the time. (He does this on a regular basis.)