![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
According to Krashen, acquisition refers to subconscious learning in the natural environment that is not influenced by explicit instruction in a second language ’ s rules and system or about errors ( 1985 ). Learning is a conscious process of language development that is the result of intended and explicit instruction in a second language ’ s roles and system or about errors in an artificial environment such as a formal language classroom.