Compounds of ませんか

• ませんか
  (exp) (1) (pol) (used to ask a question in the negative) won't (hasn't, isn't, doesn't, etc.)
  (2) (used to make invitations, express desires or give indirect commands) won't you
  (P)
• ませんかった
  (exp) (pol) (arch) suffix used to negate a verb in the past tense
• お変わりありませんか
  (exp) (pol) how have (you) been? (gen. used after some time apart)
  lit: nothing (untoward) has happened, has it?