Grammar : Adverb of Frequency

An adverb of frequency indicates that frequency of an event or activity.
It answer the question "How often...?"
examples : always, usually, often, sometimes, rarely, seldom, never.

Adverbs of frequency come before verbs :

Subject	Adverb	Verb Phrase
Tatang Ronald Dose he	never often always	Cheats in exams. Reads the newspaper in the morning  Come to the class on time?

Adverb of frequency came after be.

Subject	“Be”	Adverb of frequency	Complement
Anis Tinton	Is Is	Always Often Never	Happy. Late Absent ?

Adverb of frequency can also be in the form of phrases (examples:three times a day, once a week ). They are placed at the end of sentence.
Example :

• He comes here twice a week.
• Please feed the rabbits three times a day.

Taken From : English On Sky 2, 2007