>We use some adverbs to describe how frequently we do an activity. These are called adverbs of frequency.
-The Position of the Adverb in a Sentence-
>An adverb of frequency goes before a main verb (except with To Be). (Subject + adverb + main verb). Example: I always remember to do my homework.
>An adverb of frequency goes after the verb To Be. (Subject + to be + adverb). Example: They are never pleased to see me.
>When we use an auxiliary verb (have, will, must, might, could, would, can, etc.), the adverb is placed between the auxiliary and the main verb. This is also true for to be. (Subject + auxiliary + adverb + main verb). Example: She can sometimes beat me in a race.