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The future perfect is used to predict or estimate future actions to be completed at some pre-determined point in the future, and in common with all perfect tenses it is formed with the auxiliary verb to have and the past participle of the principle verb following to the modal will/shall.

 

The future perfect is formed by the modal auxiliary will or shall,

 

the present tense of the verb to have,  and the past participle 

 

of the principle verb:

 

Future Perfect

FORM

[will/shall + have + past participle]

 

Examples:

• You will have perfected your English by the time you come back from the U.S.

• Will you have perfected your English by the time you come back from the U.S.?

• You will not have perfected your English by the time you come back from the U.S

 

 

Contractions

 

In speaking with the future perfect tense, we often contract the subject and will.

Sometimes, we contract the subject, will and have all together:

I will have -  I'll have -  I'll've

you will have  -  you'll have  -  you'll've

he will have  -  he'll have  -  he'll've
she will have  -   she'll have   -   she'll've
it will have -  it'll have   -   it'll've
we will have  -  we'll have   -   we'll've

they will have   -   they'll have   -   they'll've

 

 

FORM Future Perfect with "Be Going To"

[am/is/are + going to have + past participle]

 

Examples:

• You are going to have perfected your English by the time you come back from the U.S.

• Are you going to have perfected your English by the time you come back from the U.S.?

• You are not going to have perfected your English by the time you come back from the U.S.

NOTE: It is possible to use either "will" or "be going to" to create the Future Perfect with little or no difference in meaning.

 

 

 

 

How do we use the Future Perfect Tense?

 

The future perfect tense expresses action in the future before another action in the future. This is the past in the future. For example:

• The train will leave the station at 9am. You will arrive at the station at 9.15am. When you arrive, the train will have left.

• You can call me at work at 8am. I will have arrived at the office by 8.

 

ADVERB PLACEMENT

The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.

 

Examples:

• You will only have learned a few words.

• Will you only have learned a few words?

• You are only going to have learned a few words.

• Are you only going to have learned a few words?