Can we use time expression such as once/twice/thrice a month/week/year with the word used to?<br/><br/>it it possible to make phrases like.<br/><br/>I used to go to cinema twice a year.<br/><br/>someone told me we can use time expression like every week/fortnight/month/year with used to.<br/><br/>can anyone tell me the gramatical rule for that.<br/><br/>thanks in advance