This document provides instruction on forming sentences in the present simple tense in English. It explains that for third person singular subjects, the verb typically takes an -s ending. Exceptions include verbs that end in -ss, -sh, -ch, or -o, which take -es instead. Verbs ending in a consonant before -y change the -y to -ies. It also notes that negative and question forms use "does" plus the infinitive verb form. Examples are provided to illustrate forming sentences in the present simple tense.