This learning module is designed to provide the prospective teacher of English as second language with a contrastive overview of the syntactic structures of Spanish and English and to enable him to: (a) state the English language patterns that are difficult for a Puerto Rican Spanish-speaker, (b) explain the specific causes for indications of native language interference; (c) design teaching activities based on specific linguistic contrasts, and (d) evaluate self-prepared activities in terms of an effective strategy. Required and optional enabling activities consist of readings, exercises, video tape viewing, and seminar attendance. Pre- and post-assessment instruments are included in the module. (HMD)