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every three days vs once three days

The phrase 'every three days' is correct and commonly used to indicate something that occurs every three days. On the other hand, 'once three days' is not a standard English phrase and does not convey the intended meaning. Therefore, 'every three days' is the correct choice in this comparison.

Last updated: March 26, 2024

every three days

This phrase is correct and commonly used in English to indicate something that happens every three days.

This phrase is used to describe the frequency of an event or action that occurs once every three days.

Examples:

  • I water the plants every three days.
  • She goes to the gym every three days.
  • The garbage truck comes every three days.
  • They have a team meeting every three days.
  • The medication needs to be taken every three days.
  • The Taliban are moving Rowe and Davis every three days.
  • That's once every three days.
  • You know we do it every three days.
  • Rough estimates suggest that every three days a patient dies because of a shortage of donors.
  • And the nitrogen is every three days.
  • You'll come back every three days for a drug screening and brain scan.
  • You're only supposed to do it every three days.
  • Once every three days, she sees lady Oraku and acts as her companion.
  • It's only updated every three days, so there's some lag time between the main system and...
  • You should change your patch at the same time of day every three days (every 72 hours), unless directed otherwise by your doctor.
  • It tends to go in these pulses, about every three days, but on average, 125 feet a day, twice the rate it did 20 years ago.
  • People love the product, and the product dies every three days.
  • Two, three, four - they're dying in order, every three days.
  • Weekly catch report format (every three days when the vessel is operating in seychelles waters)
  • animals must be subjected to clinical inspection every three days for the first 14 days following the introduction;
  • We use burners, and we change them up every three days.
  • The Justinian Code stipulated that legionaries were to receive a ration of pork fat every three days.
  • The All-India Christian Council states that Christians are the targets of varying levels of aggression and intolerance on average every three days in India.
  • Last time the Dollmaker was active... he ramped up to one kill every three days.
  • A dosage reduction to rifabutin 150 mg every three days is recommended based on experience with low dose ritonavir boosted protease inhibitors.

once three days

This phrase is not a standard English expression and does not convey the intended meaning of something happening every three days.

  • on day one, possibly repeated once within three days
  • I once waited three days for a guy.
  • That's once every three days.
  • He once went three days without sleep as a kind of experiment.
  • I once spent three days in a Riyadh storage facility... with nothing but a flashlight and a Arabic celebrity magazine.
  • Once every three days, she sees lady Oraku and acts as her companion.
  • I then met Prime Minister Youssoufi and Fisheries Minister Chbaatou for talks twice at the beginning of January - once for three days and once for two days.
  • Immune thrombocytopenic purpura For the treatment of an acute episode, 0.8 to 1 g/kg bw on day one, which may be repeated once within three days, or 0.4 g/kg bw daily for two to five days.
  • He once rode three days around the clock.
  • You know, l never told anybody this... but once, for about three days... just before her time... Teresa's arm went completely dead.
  • Arava treatment starts with a loading dose of 100 mg once a day for three days, followed by a maintenance dose.
  • If there is a monster underground, it is the crushing psychological remoteness that begins to hit every member of the team once you cross about three days inbound from the nearest entrance.
  • The oldest needs braces... the youngest once sneezed for three days straight... but who could complain?
  • She once sat outside of his house for three days.
  • I once kept this up for three days.
  • Back in the days when I was drinking, I once went on a bender for three days.
  • Once I chanted it for, like, three days non-stop just driving through Europe.
  • A girl gave me the shoulder brush once... we didn't come out of her apartment for three days.
  • And once they've taken that, it is a three-day march to Rome.
  • Once they've been missing for three days, it's all over.

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