The position of these adverbs is:
before the main verb
|Adverb of frequency||Verb|
|I||always||get up||at 6.45.|
|Peter||can||usually||play||football on Sundays.|
|Mandy||has||sometimes||got||lots of homework.|
after a form of to be am, are, is (was, were)
|Verb||Adverb of frequency|
The adverbs often, usually, sometimes and occasionally can go at the beginning of a sentence:
Sometimes I go swimming.
Often we surf the internet.
Somtimes these adverbs are put at the end of the sentence:
We read books occasionally.