Future Perfect Continuous

How long something will have run by a future point.

S + will + have + been + Ving

Emphasizes the duration of an action that will continue right up to a specific point in the future. Requires a duration marker (for/since).

Examples

  • By May I will have been working here for a year.
  • By the deadline we will have been negotiating this contract for two months.
  • By June she will have been driving this route for a decade.

  • By May I will have been work here for a year.

    By May I will have been working here for a year.

    will have been must be followed by Ving: will have been working.

Common mistakes

  • will have been + V1 instead of Ving: will have been work → will have been working.
  • Using this tense without a duration marker (for/since), which is essential here.
Practice