Questions that transfer role of NL is positive, negative transfer is unavoidable, interlanguage is inevitable will be discussed in this paper.
The attitude of various teaching method to native language(NL)can be divided in to two types:one way is to use NL,another way is to repel it.It is not correct that the errors in the second language learning have been sumed up NL completely.But the language transfer must be an important obstscles which should be hold for learners when they master the target language.These questions that transfer role of NL is positive,negative transfer is unavoidable,interlanguage is inevitable will be discussed in this paper.