Why should we teach pragmatics? The importance of pragmatics in language teaching. (in the example of Apologies)

Teaching pragmatics is one of the important things in second language acquisition and its development. Many EFL learners know the English language and its grammatical structures, but don’t consider the culture of this wonderful and fantastic language. As we know, there is a link between the transfer of pragmatics knowledge and second language acquisition. Negative pragmatic transfer sometimes may lead to learners’ divergence in their language acquisition process.