The practical format of this text allows native Spanish-speakers studying English to compare and contrast the grammar of both languages at a glance. Explanations are presented in Spanish, with examples in both Spanish and English. The trouble spots for the Spanish-speaker learning English are featured, as are the problematic two-word verbs in English. This systematic, comparative approach facilitates students' understanding of forms and structures in both languages and allows them to build on what they already know. Lessons organized by parts of speech explain functions and uses in clear language with abundant examples. Students focus on and thoroughly understand each grammar concept--while learning the grammar of their own language! Vocabulary is limited to frequently used words, which helps intermediate students concentrate more on structure. A Quick Check summarizes main ideas in each section and provides models.