More focuses of foreign language teaching theory and practice are on the study of first language and second language acquisition. The article deals with the concept of first and second language acquisition, the relationship between them and the factors influencing on them. The characteristics of the children acquisition and adult acquisition are also studied.
The paper analyses the causes of the backwardness of oral English teaching in the universities from the aspects of CET4,oral classes,oral coursebook, teaching methodology and teaching evaluation.It also presents several strategies to change the unfavorable situation.