for over an hour by the time Thomas arrives .
В· She is going to have been working at that company for three years when it finally closes .
В· James will have been teaching at the university for more than a year by the time he leaves for Asia.
В· How long will you have been studying when you graduate ?
В· We are going to have been driving for over three days straight when we get to Anchorage.Examples: A: When you finish your English course, will you have been living in New Zealand for over a year? B: No, I will not have been living here that long.Notice that in the above examples the reference points ( marked in italics ) are in Simple Present rather than Simple Future. This is because these future events are in time clauses, and you cannot use future tenses in time clauses.
Cause of Something in the Future
Using the Future Perfect Continuous before another action in the future is a good way to show cause and effect.
Future Continuous vs. Future Perfect Continuous
If you do not include a duration such as В«for five minutes,В» В«for two weeksВ» or В«since Friday,В» many English speakers choose to use the Future Continuous rather than the Future Perfect Continuous. Be careful because this can change the meaning of the sentence. Future Continuous emphasizes interrupted actions, whereas Future Perfect Continuous emphasizes a duration of time before something in the future. Study the examples below to understand the difference.: p align="justify"> В· He will be tired because he will be exercising so hard.
В· This sentence emphasizes that he will be tired because he will be exercising at that exact moment in the future.
В· He will be tired because he will have been exercising so hard.
В· This sentence emphasizes that he will be tired because he will have been exercising for a period of time. It is possible that he will still be exercising at that moment OR that he will just have finished.
Remember that there is No Future in Time Clauses
Like all future forms, the Future Perfect Continuous cannot be used in clauses beginning with time expressions such as: when, while, before, after, by the time, as soon as, if, unless, etc.
Instead of Future Perfect Continuous, Present Perfect Continuous is used. See the examples below.: p align="justify"> В· You won't get a promotion until you will have been working here as long as Tim. Not Correct
В· You won't get a promotion until you have been working here as long as Tim. Correct
Do not forget Non-Continuous Verbs/Mixed Verbs as wel
It is important to remember that Non-Continuous Verbs cannot be used in any continuous tenses. Also, certain non-continuous meanings for Mixed Verbs cannot be used in continuous tenses. Instead of using Future Perfect Continuous with these verbs, you must use Future Perfect. p align="justify"> Adverb replacementsexamples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.
Examples:
В· You...
