Language(from birth to six years) starting with practice coos and sounds,your baby progresses from babble to words,phrases,then sentences.

• 语言敏感期（从出生到六岁）：婴儿的语言敏感期始于呀呀学语声音的练习，孩子的语言发展阶段：音节，单词，词组最后才是句子。