shén​me​shí​hou

when

shén​me​shí​hou when

  1. what
    Used as a question word to ask about the identity, nature, or name of a person or thing.
  2. time
    A point in time; a moment; the time when something happens

shén​me​shí​hou whenever

  1. whatever
    Used with dōu or to mean 'any' or 'every'; when used twice in a sentence, the first instance determines the second, meaning 'whatever'.
  2. time
    A point in time; a moment; the time when something happens