native speakers and listeners are travellers of same boat.native speakers use same language,same emotions,same problems,same gestures but non native speakers are different from these qualities
Some researchers claim that students are prone to transfer their language skills, either good or deficient, from their L1 (first language) to L2. Therefore, skills or strategies which were never acquired in students' L1, could never be transferred to L2. This could be an impediment to learning a new language. Another one could be interference of the students' L1.