Present Continuous
Present Simple
Present Perfect Continuous
Present Perfect
Past Simple
Past Perfect
Past Perfect Continuous
Future Simple
Future Continuous
Future Perfect
Future Perfect Continuous
Future Perfect Continuous
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We use this tense to express actions that will be happening at a definite moment in the future.
Use
- Actions that will be in progress at a definite moment in the future.
| By tomorrow I will have been saving money for a new house for 4 years. |
Common time expressions used in the Future Perfect Continuous :
- By tomorrow / 8 o'clock
- This year / month / week
- Next year / month / week
Form
Contracted forms (more)
WILL = 'LL
Example: She'll have been = she will have been
WILL + NOT = WON'T
Example: She won't have been = she will not have been
Positive sentences:
We will have been driving 6 hours by the time we get home.
In the summer Mike will have been trying to find a new job for five months.
Jane will be very tired when she comes home, because she will have been flying over 24 hours.
My father and I will have been breeding sheep for 20 years tomorrow.
By the year 2020, linguists will have been studying and defining the Indo-European language family for more than 200 years.
Note: If duration of an activity (since April, for three hours) is unknown then the Future Continuous should be used instead of the perfect form.
| Subject | + | Auxiliary verb | + | Auxiliary verb | + | + | Present participle | |
| I/a dog etc. | will | have | been | going, doing (verb + ing) |
Negative sentences:
| Subject | + | Auxiliary verb | + | Auxiliary verb | + | + | Present participle | |
| I/a dog etc. | won't | have | been | going, doing (verb + ing) |
She won't have been writing the book for four months by the end of October.
Negative sentences seem to sound somewhat unnatural. Probably because the answer to a question like, "Will she have been teaching for 30 years this year?", would simply be, "No, I don't think so".
Questions (interrogative sentences):
| Auxiliary verb | + | Subject | + | Auxiliary verb | + | + | Present participle | ? | |
| Will | I/a dog etc. | have | been | going, doing (verb + ing) |
Will he have been writing the composition for a month by the end of February?
Questions beginning with "how long" are more common:
How long will you have been learning German this year?
How long will you have been trying to get your driving license this week? I hope you'll finally make it!
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This tense is rather difficult to learn and teach.
It's not that direct and usually uncommon to use. Perhaps because it's difficult to both natives and learners of english. Could you give more explanations and examples???
There is a mistake on Furure Perfect Continuous page because interrogative sentence is written as a negative sentence and the negative sentence as an interrogative sentence so the author of this page should swap the examples of negative and interrogative sentences!!!:)
Thanks! It has naturally been fixed :-)