Future Perfect Continuous

Usage

Like the future perfect simple, this form is used to project ourselves forward in time and to look back. It refers to events or actions that are currently unfinished but will be finished at some future time. It is most often used with a time expression.

Examples

• I will have been waiting here for three hours by six o'clock.
• By 2001 I will have been living in London for sixteen years.
• When I finish this course, I will have been learning English for twenty years.
• Next year I will have been working here for four years.
• When I come at 6:00, will you have been practicing long?

Subject-Verb Agreement

Affirmative

• I will have been drinking...
  • I'll have been drinking...
• You will have been drinking...
  • You'll have been drinking...
• We will have been drinking...
  • We'll have been drinking...
• They will have been drinking...
  • They'll have been drinking...
• He will have been drinking...
  • He'll have been drinking...
• She will have been drinking...
  • She'll have been drinking...
• It will have been drinking...
  • It'll have been drinking...

Interrogative

• Will I have been drinking...?
• Will you have been drinking...?
• Will we have been drinking...?
• Will they have been drinking...?
• Will he have been drinking...?
• Will she have been drinking...?
• Will it have been drinking...?

Negative

• I won't have been drinking...
  • I will not have been drinking...
  • I'll not have been drinking...
• You won't have been drinking...
  • You will not have been drinking...
  • You'll not have been drinking...
• We won't have been drinking...
  • We will not have been drinking...
  • We'll not have been drinking...
• They won't have been drinking...
  • They will not have been drinking...
  • They'll not have been drinking...
• He won't have been drinking...
  • He will not have been drinking...
  • He'll not have been drinking...
• She won't have been drinking...
  • She will not have been drinking...
  • She'll not have been drinking...
• It won't have been drinking...
  • It will not have been drinking...
  • It'll not have been drinking...