First of all, the Pertanin formed by 6200 BC,whose people retreated from the Doggerland. They spoken a language maybe the forrunner of Celtic.
By 40 AD, the Romans conqure the Britannia land. They also bring their languge--- Latin.
By 400 AD, roman was collapsing, and the Germanic tribes settled in this land.The old English and Anglo-saxon appeared.
At the end of the ninth century,the Alfred the Great determined people to literate in English. There was so much written in the vernacular.The Beowulf written many beautiful manuscripts during the period. The Beowulf maybe the representetive of old English.
In 793 AD, the heathen --- Vikings arrived in England, and brought the old Norse. During this period, a lot of words got borrowed into English fromDanish.The anglo-saxon language absorbed many words from old norse.
In the 11 century, the king of Norway invaded.While the owner defeated the Norway king in the north,William landed in the south. The Norman conquest began. Under the controlling of Norman, French was spoken by the king and court in aristocracy,Latin was spoken by the church and in administrative realms,and English was used by everybody else.Almost every thing had two words.Geoffrey Chaucer was a great poet of that time.
In the mid 15th century,the printing press was invented, which made many great works were widespread, especially the Shakespare's works.Shake spare coined very large number of words. And for the globle trade, more words coming from Romance languge, and Dutch or German come into English.
