The purpose of language learning is to improve the speakers' four skills of listening, speaking, reading and writing, with the base of large vocabulary and good grammar, but this is not the final purpose. The final purpose is to let speakers be able to use the language. For instance, why do people study English? If a man is only good at listening and speaking, can people say that he is good at English? No. If a woman is only good at reading and writing, can people say that she is good at the language? No. …
