Ways to Say How Often

Adverb at all times; on all occasions
always
Caitlin and Donnie always fall asleep during class.
Adverb not ever; not at any time
never
I have never been to the Pacific Ocean.
Adverb many times; frequently
often
I often have trouble finding my keys.
Adverb not often; almost never
seldom
Vincent seldom cooked a meal for himself in college.
Adverb at certain times or in certain cases but not always
sometimes
I sometimes go to the movies by myself, if there's an early showing or if it's raining.
Adverb at most times; in the ordinary course of events
usually
I usually sleep in on Saturday mornings.