Here's a 2003 article by linguist Justin B Rye that looks at how the English has evolved over the centuries, and offers an example of what English could sound look in a thousand years.
2000 AD: We children beg you, teacher, that you should teach us to speak correctly, because we are ignorant and we speak corruptly…
3000 AD: *ZA kiad w'-exùn ya tijuh, da ya-gAr'-eduketan zA da wa-tAgan lidla, kaz 'ban iagnaran an wa-tAg kurrap…
FUTURESE: The American Language in 3000 AD (via The Presurfer)