13 First Language Acquisition第一语言习得 1. Acquisition习得 a. Acquisition习得 Acquisition is the gradual development of ability in a first or second language by using it naturally in communicative situations.习得是指通过在交际场合中自然地使用第一语言或第二语言来逐步提高能力。 b. Input输入 Input...【查看原文】