Language is not a subject of factual information or a store house of contents but a skill. Hence, its teaching requires a different treatment and different method of approach. We have to keep before us certain principles for its effective teaching and these principles are as follows;

The process by which humans acquire the capacity to perceive and comprehend language (in other words, gain the ability to be aware of language and to understand it), as well as to produce and use words and sentences to communicate.

English Basic Grammar