This Spanish grammar book contains a table of contents covering various grammar concepts including the preterite, irregular verbs, modal verbs, adverbs, and progressive tense. It provides conjugations and explanations of these concepts in Spanish with examples. For the preterite tense, it shows the conjugations of -car, -gar and -zar verbs and lists irregular preterite forms. It also provides the meanings and uses of common modal verbs like poder, querer, deber and tener que.