Future Perfect Continuous

 

We use both ”will +  have +  been +  verb +  ing” and  ”be +  going +  to +  have +  been + verb +  ing” to  talk express/ predict that something will continue and finish at some time in the future before something else in the future. 

The lion will have been eating for ten minutes by the time the poachers arrive.

She is going to have been completing her doctorate by May next year.

h

The future Continuous can also be used to show that something will cause something else to happen at sometime in the future.

He will be a millionaire by the time he is twenty because he will have been working  hard to sell his products.

They will only have been eating  for a short time when you turn up.

d

Note

We can also start sentences with the subordinate conjunction and time clause = By the time + present simple but we must remember to use a comma immediately after the time clause.

d

By the time + present simple + comma + subject + will+ have + been + verb 1 + ing + ( object )

By the time the poachers arrivethe lion will have been eating for 10 minutes.

d

Note

Other expressions can be used to replace ” by the time” such as ” by + time ” / ” by + day ”  / ” by + year ” without the present simple clause.

By Monday, I am going to have been studying for one whole week.

I am going to have been studying for one whole week by next Monday.

k

Formulas with  ‘ will ‘ 

( + ) Subject + will + have + been  + verb + ing + by the time + present simple

( – ) Subject + will  +  not + have + been + verb + ing + by the time + present simple

( ? ) Will + subject + have + been + verb + ing + by the time + present simple

( -? ) Will + not( won’t) + subject + have + been + verb + ing +  by the time + present simple

( -? ) Will  + subject + not  + have + been + verb + ing + by the time + present simple

( + Information Question ) Q/W + Will  + subject + have + been + verb + ing + by the time + present simple

( – Information Question ) Q/W + Will + not( won’t) + subject + have + been + verb + ing + by the time + present simple

d

Formulas with ‘ going to ‘

( + ) Subject +  be +  going to + have + been + verb + ing + by the time + present simple

( – ) Subject + be + not  going to + have + been + verb + ing + by the time + present simple

( ? ) be  + subject + going to +  have + been + verb + ing + by the time + present simple

( -? ) be  + not  + subject + going to +  have + been + verb + ing + by the time + present simple

( -? ) be + subject +  not + going to + have + been + verb + ing + by the time + present simple

( + Information Question ) Q/W + be + subject + going to +  have + been + verb + ing + by the time + present simple

( – Information Question ) Q/W + be + not + subject + going to +  have + been + verb + ing + by the time + present simple

K

Test your knowledge with the following questions

He is _____ ______ ______ ______ for three years to get his money by next May.

Correct! Wrong!

They are ______ ______ _______ _______ for ten minutes when ambulance finally arrives.

Correct! Wrong!

The man _____ ______ _______ _______ working for nearly eight hours by the end of the day.

Correct! Wrong!

We _____ ______ _______ _______ for two days non stop by the time we have dinner.

Correct! Wrong!

Will ______ ______ _______ ______ in Mexico for five years when you visit her?

Correct! Wrong!

_______ ______ _______ _______ ________ hiking for one year when the trip ends?

Correct! Wrong!

You _____ _______ _______ _______ ________ _________ for two hours when it gets dark.

Correct! Wrong!

The badger is dying of hunger and is ______ _______ _______ searching for food for two days without success unless we arrive with some food for it very soon, it will die.

Correct! Wrong!

I ____ _____ ______ ______ ______ for one full hour by the time the plumber gets here.

Correct! Wrong!

The engine _____ ______ ______ ______ for five minutes when I am ready use it.

Correct! Wrong!

The homeless man _____ ______ _____ ______ on the streets for one whole year tomorrow as he has only been homeless since last month.

Correct! Wrong!

The accused ______ ______ ______ ______ for three days tomorrow, for his verdict as the jury only went away to decide yesterday.

Correct! Wrong!

How _____ ______ ______ ______ fighting for thirty minutes non stop ? He started fighting ten minutes ago.

Correct! Wrong!

He ______ _______ ________ _______ for 2 hours by 9 o’clock, if he continues eating at this rate.

Correct! Wrong!

She is scheduled to see the doctor in ten minutes. which means she _____ ______ ______ ______ for ninety minutes by the time it is her turn.

Correct! Wrong!

Future Perfect Continuous
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