The phrase "will have fed" is correct and commonly used in written English.
It is typically used in the future perfect tense to indicate an action that will be completed before a specific time in the future. Example: By the time we arrive at the party, the guests will have already fed themselves.
A year from now, when the consequences of cheaper energy will have fed through the system, we will have more idea.
We will know all about these parents because the named persons scheme will have fed all their details into the big computer.
A house so technically advanced and environmentally-friendly that within 40 years it will have fed more energy back into the national grid than was used to build it, thus wiping out its carbon debt to the planet.
That means that, in the end, these old boobs will have fed and nurtured babies for more than four years.
Able to grow where nearly nothing else will, they have fed more than their share of caribou and reindeer, not to mention lost and starving human explorers.
Mr Erdoğan's fury will have been fed by a visit to Ankara on February 25th by Nicolas Sarkozy.
Long before then, or so the mayor hopes, the bankers will have got fed up.In this section Where did it all go wrong?
But the longer and louder that battle is, the more it will hurt the party that has fed it.
Remember, after you find bigfoot you will have to feed him and keep feeding him every day after that.
If your baby is only a few days old, you will have to feed it milk from yourself, or feed it a bottle.
Of course we will have to feed more people every year, but as countries rush to increase agricultural production, ensuring best practices could reduce disease emergence just as proper construction practices reduce the death toll of earthquakes.
