The document discusses the origin and history of the English language. It explains that English began as a Germanic dialect spoken in a small part of the British Isles but has since become one of the most widely spoken languages worldwide. The development of English started around 3,000 years ago with the arrival of the Celts and was later influenced by Latin from the Romans. Over time, English underwent internal and external changes and can be divided into periods like Old English and Modern English. Learning about the origin and evolution of English provides useful context for teaching the language and answering students' questions.