Future Perfect Continuous tense



Future perfect continuous tense expresses an action that will have been going on at sometime in the future.

There will be a time reference, such as "since 2000, for two hours etc" from which the action will start in future and will continue. We use 'for' with a period of time while 'since' is used to express a point of time.




Look at the following examples:

  1. We shall have been studying English since morning.
  2. They will have been playing for two hours.


Note. When there is no reference of any, point of time or period of time, we use future continuous tense. 


The future perfect continuous tense is one of four future tenses. They are future simple tense, future continuous tense, future perfect tense and future Perfect continuous tense.







How to make the future perfect continuous




Positive (Future perfect continuous)

Future perfect continuous sentences, have the following structure:

  • Subject + auxiliary verb + main verb (Present participle) +.....+ since/for +.....
  • Subject + will have been/shall have been + Ist form of verb + ing +..........+ since/for +.....

For examples:

  1. I shall have been studying for two hours.
  2. They will have been playing since morning.

REMEMBER

(SINGULAR AND PLURAL PRONOUNS)


Person

1st Person

2nd Person

3rd Person

Singular

I

you

he, she, it

Plural

we.

you.

they.


Rules:  For future perfect continuous sentences:

  • Auxiliary verb "shall have been" or "will have been" is used after the subject.
  • 'Shall have been' is used with 1st person.
  • 'Will have been' is used with 2nd and 3rd person.

Use of Since or For:

  • "For" is used to express period of time; as, morning, evening, etc.
  • "Since" is used to denote point of time; as, some time, hours, months, etc.







Negative (Future perfect continuous)

Future perfect continuous negative sentences, have the following structure:

  • Subject + auxiliary verb + not + auxiliay verb + main verb (Present participle) +........+ since/for +.....
  • Subject + will/shall + not + have been + Ist form of verb + ing +..........+ since/for +.....

For examples:

  1. I shall not have been studying for two hours.
  2. They will not have been playing since morning.


Interrogative (Future perfect continuous)

Future perfect continuous interrogative sentences, have the following structure :

  • Auxiliary verb + Subject + auxiliary verb + main verb (Present participle) +........+ since/for +....?
  • Shall/Will + Subject + have been + Ist form of verb + ing +........+ since/for +....?

For examples:

  1. Shall I have been studying for two hours?
  2. Will they have been playing since morning?

Interrogative negative (Future perfect continuous)

Future perfect continuous interrogative negative sentences, have the following structure :

  • Auxiliary verb + Subject + not + auxiliary verb + main verb (Present participle) +........+ since/for +....?
  • Will/Shall + Subject + not + have been + Ist form of verb + ing +........+ since/for +....?

For examples:

  1. Shall I not have been studying for two hours?
  2. Will they not have been playing since morning?




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Related topics:


Present Tense

  1. Present simple tense
  2. Present continuous tense
  3. Present perfect tense
  4. Present Perfect continuous tense

Past Tense

  1. Past simple tense
  2. Past continuous tense
  3. Past perfect tense
  4. Past Perfect continuous tense

Future Tense

  1. Future simple tense
  2. Future continuous tense
  3. Future perfect tense
  4. Future Perfect continuous tense