Language acquisition includes language acquisition (natural acquisition) and language learning (deliberate learning). Compared with hearing children

hearing-impaired children differ in terms of their subjective state

purposes

environment

and approaches in the process of language acquisition. Meanwhile

hearing-impaired children have unique characteristics in language acquisition. The core of language acquisition for hearing-impaired children is to enable them to acquire natural language

construct their own natural language system

and then enter the world of spoken language.