more/less than every X weeks/months

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meijin

Senior Member
Japanese
Hi, if I'm not mistaken an expression like "I do it every two weeks" is correct and there's no need to say "I do it once every two weeks".
Is "
once" still unnecessary when preceded by "more than" or "less than"? Please see the following examples I created.

1. Participants who cook less [often] than every two weeks should be screened out. [An instruction in a questionnaire]
2. I travel abroad more [often] than every two months. [A response to an interviewer in a face-to-face survey]
 
  • Glenfarclas

    Senior Member
    English (American)
    1. Participants who cook less [often] than every two weeks should be screened out. [An instruction in a questionnaire]
    2. I travel abroad more [often] than every two months. [A response to an interviewer in a face-to-face survey]
    I find those sentences vague and perplexing. I can understand how you arrived at them, but I don't recommend them.

    I take the trash out more than every week. :thumbsdown:
    I take the trash out more than once a week. :tick:
     

    meijin

    Senior Member
    Japanese
    Unlike "once a week", "once two weeks" doesn't work (if I'm not mistaken). So how would you explain it when you do something more than once every two weeks? BE speakers can probably say, for example, "I play tennis more than once a fortnight". Would AmE speakers instead say "I play tennis more than twice a month"?
     

    Uncle Jack

    Senior Member
    British English
    Your original sentence "I do it every two weeks" is correct.
    As soon as you add more or less than, you need 'once' (or 'twice' or whatever)
    If the time period has a number, then use 'every':
    I play tennis more than once a fortnight
    I play tennis more than once every six weeks
    I play tennis more than seventeen times every two months​
     
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