[简答题,10分] What is Chaucer’s contribution to English language?

Chaucer is worth being considered as father of poetry, because during his lifetime, he did great contribution to English literature. The rhymed couplet of iambic pentameter later called the “heroic couplet” was actually introduced by him, together with some other rhymed stanzas of various types of poetic forms. He is also the first important poet to write in the current English language. Chaucer did much in making the dialect of London the foundation for modern English language.