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Definition of future perfect
: of, relating to, or constituting a verb tense that is traditionally formed in English with will have and shall have and that expresses completion of an action by a specified time that is yet to come
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“Future perfect.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/future%20perfect. Accessed 7 December 2019.
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Time Traveler for future perfect
The first known use of future perfect was circa 1898
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