The English language went through threes stages called :Old English,Middle English and Modern English.
Old English is a mixture of the language of Angles and Saxons.
Gradually,between the sixth and seven centuries,the French kingdom of Normandy becomes very important to the development of English.
Modern English starts from Shakespeare's time.It is quite similar to the English we speak today.
Today,the graduad changes of English as a result of communication between people and people from all parts of the world.