1. adverbs of frequency

An adverb of frequency goes before a main verb (except with verbs to be)

-We often watch movies on Friday night.

- He usually gets good grades in exams.

An adverb of frequency goes after the verb To Be.

-Ahmed is always on time.

-She isn’t usually bad tempered.

Adverbs of frequency might end or begin a sentence

-Usually, Hana calls before coming.

-Hana calls before coming usually.