There are other purpose clauses introduced by more ordinary particles in which the verb is inflected for a special subordinate mode.
en.wikipedia.org However, until the beginning of the twentieth century, it was normal to inflect the present tense in number in educated prose.
en.wikipedia.org The participles are inflected by gender, number, and definiteness, and are coordinated with the subject when forming compound tenses (see tenses above).
en.wikipedia.org Verbs inflect for person, number (singular, dual, plural/nonsingular), negation, several categories in the domain of tense, aspect and mood.
en.wikipedia.org Verbs are inflected for tense and aspect, and for agreement with subject and object.
en.wikipedia.org