与Book 2 Unit 7单元主题相关的视频与文章：
History of English (combined)
Where did English Come from – Claire Bowern
English Words History and Structure – Donka Minkova
History of English
与Book 2 Unit 7单元主题相关的视频与文章：
History of English (combined)
Where did English Come from – Claire Bowern
English Words History and Structure – Donka Minkova
History of English