We use language in various ways, for example, to tell people how we feel, to talk about things we like, and to be able to question and understand the world around us. As well as giving children a sense of identity. The language can be different and standard, for example, the language can be different between cultures with different English accents, and the language can be standard when most people in a country speak one variety of English. Language can be seen through reading and heard through oral language. Halliday and Piaget's functions on language indicated the important role of language in children's lives. This essay highlights that language plays an important role in children's lives. The most important thing is that children acquire the skills necessary to learn to communicate and exchange information with others