This article introduces historical context and theoretical basis of the shift from the traditional approach focus on forms in second language teaching to focus on meaning and focus on form.

Paul Benedict, an American linguist, regarded the Jingpo language as the central language but did not give it a systematic analysis in his Sino - Tibetan: A Conspectus.

Furthermore, an inquiry is made into how to improve students' comprehensive practical abilities from the following three aspects: the orientation of "student centered" practice, "project centered" teaching pattern and application of numerical control processing machine tool.

Bickerton’s language center theory and enlightenment to foreign language learning and teaching;