Unit 3.2

Future Perfect Continuous

Tenses


Introduction

We use future perfect continuous tense to talk about a continuous action that will be completed at some point in the future. It is often used with time expressions.

Form

Future perfect continuous has these three forms:

Affirmative

Its structure, in the affirmative form, is:
Subject + will + have + been + present participle + …

SUBJECTFUTURE SIMPLEAUXILIARY VERBBEENPRESENT PARTICIPLE
I/You/He/She/It/We/You/They willhavebeenwalking

Negative

Its structure, in the negative form, is:
Subject + will not + auxiliary verb (have) + been + present continuous + …

  • Negative short form is: won’t.
SUBJECTFUTURE SIMPLE + NOTAUXILIARY VERBBEENPRESENT PARTICIPLE
I/You/He/She/It/We/You/They will not
havebeenwalking

Interrogative

Its structure, in the interrogative form, is:
Will + Subject + have + been + present continuous + …?

FUTURE SIMPLESUBJECTAUXILIARY VERBBEENPRESENT PARTICIPLEQUESTION MARK
WillI/You/He/She/It/We/You/Theyhavebeenwalking?

Example

  • won’t have been investing in architecture by the end of 2020.
  • The company will have been already trading for 2 weeks after the new manager’s arrival.
  • They will have been negotiating for 3 years this summer.
  • After the new manager arrival, the company still won’t have been trading.
  • Will the company have been trading for 2 weeks after the new manager arrival?

Use

We use future perfect continuous to talk about a continuous action that will be completed at some point in the future.

We can use time expressions such as for two minutes, for 5 years, since Saturday… 

We can use future perfect to show the relation of cause and effect.

Summary

We use future perfect continuous to talk about a continuous action that will be completed at some point in the future and to show the relation of cause and effect.

We can use it in its different forms:

  • Affirmative: We start with the subject followed by will have been and the present participle.
  • Negative: We start with the subject followed by will not have been and the present partciple.
  • Interrogative: We start with will followed by the subject followed by have been and the present participle (the sentence ends with a question mark).

We can use time expressions such as: for 5 years, since Saturday… 

For example:

— I will have been working with you for 3 years next week.” = We use the future perfect continuous because we assume that this event will take place in the Future.
♦ “I will be working next week.” = We use the future continuous because we assume that this event will take place in the Future. Therefore, we use the future continuous tense.
♦ “I will work next week.” = We use the future simple because we express a future intention.

Let’s revise this content within the {Form} section. Take a look at the {Example} section that shows its use within a context.

License

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