Here's why:
* Modern English is the current stage of the English language. It evolved from Middle English, which itself evolved from Old English.
* Middle English (roughly 1150-1500 AD) was a period of significant change in the English language, heavily influenced by Norman French after the Norman Conquest. While Modern English does share some features with Middle English, it's not a direct continuation.
* Modern English has its own distinct vocabulary, grammar, and pronunciation that sets it apart from Middle English.
While some words and sentence structures might be recognizable from Middle English, the language has evolved considerably over centuries.