when is on the Basic English 850 List.
wheel - when - where
when is one of the 1000 most common headwords.
what - when - where

Pronunciation change

Homophones change

Preposition change


  1. at what time; on what occasion
    "When did you start learning English?" – "Three years ago."
    "When does the film start?" – "At seven o'clock."
    When was the last time you went to your local library?
  2. at the time
    She phoned me when I was in the bath.
    It was the year 1996 when I met John.
  3. after
    When I get up, I always drink a cup of coffee.

Related words change