est-ce que

1. Used to introduce a yes-or-no question.
2. Used after a preposed interrogative to introduce the remainder of the question.

ce

• Det

  this, that

• Pron

n'est

contraction of ne + est (third-person singular indicative present form of être)

pas

• Noun

  1. step, pace, footstep
  2. strait, pass
  3. thread, pitch (of a screw or nut)

• Adv

une

• Num

  feminine singular of un

• Article
• Noun

que

• Conj

  1. that (introduces a subordinate noun clause and connects it to its parent clause)
  2. Substitutes for another, previously stated conjunction.
  3. when, no sooner
  4. Links two noun phrases in apposition forming a clause without a (finite) verb, such that the complement acts as predicate.

• Pron
• Pron