How often..

It's used to ask question about the frequency of an event.

Use how often and ever to ask questions about frequency

How often do you go to the cinema?

Before the main verb

Do you ever go to the cinema at the weekend?

Always

Almost always

Usually

Often

Sometimes

Hardly ever

Almost never

Never

Normally

Rarely

Seldom

Occasionally

In front of the main verb

We often spend Christmas with friends

After the verb be

We are never late for work.

Use the adverbial a lot to mean often or frequently

We go to the cinema a lot

Use phrases with every as adverbials of frequency

Use every with words like minute, hour, day, week, month and year and days of the week and months of the year

There is a big celebration every year.

Use the phrase every other

On alternate

We will email you every other day.

use phrases with once, twice, three times, four times, etc. and a period of time

I go swimming twice a week.

use much/a lot with a negative to mean not often