This paper examines the important role of English in Puerto Rico and the present situation of Puerto Rico's English language program. The writer gives a brief historical background of linguistics and discusses recent theories of language acquisition and transformation generative grammar. Possible applications and implications of these theories for learning and teaching English as a second language are suggested. Numerous conclusions and recommendations are made for the improvement of the Puerto Rican English program, particularly at the secondary level. A comprehensive bibliography is also included. (HW)