Frequency

in way that continues to happen all the time with no stop

She studies day and night to prepare for her exams.

at any given hour, particularly a time that is late

She works all hours to meet the demands of her high-pressure job.

used for referring to a frequent change from something to another

She adapts her plans from day to day based on the changing circumstances.

nearly all the time

Nine times out of ten, she prefers tea over coffee in the morning.

in a way that is not continuous or regular

The internet connection at my house works off and on, causing occasional disruptions.

used for saying that something can only happen on very rare occasions

Once in a blue moon, she treats herself to a spa day for some much-needed relaxation.

used for referring to a very special opportunity that most likely will not be offered more than once to someone

They experience moments that happen only once in a lifetime.

in a single action, without delay or hesitation

The company's restructuring plan aims to cut costs and streamline operations at one fell swoop.

in a manner that is consistent

The convenience store is open twenty-four seven, allowing customers to shop at any time.

on multiple occasions

Time after time, he promises to change, but he never does.

used to describe a person who always manages to arrive or get things done at the agreed or proper time

Every evening at 8 PM, as regular as clockwork, my dad sits in his armchair and reads the newspaper for exactly 45 minutes.