This document discusses language transfer, which is when speakers apply knowledge from their native language to a second language. It can affect grammar, vocabulary, spelling, and other language aspects. Transfer can be positive if the languages share structures, leading to correct usage, or negative if structures differ, causing errors. The degree of difference between languages impacts how much interference occurs. Transfer is an inevitable part of second language learning as learners rely on their native language rules. Factors like the languages involved, the learning stage, and individual learner differences influence the nature and amount of transfer.