Imperative, perfect, pluperfect, perfect, and infinitive are types of?
Infinitive (Ancient Greek) etc. and it is usually used in "oratio obliqua" (in indirect speech or indirect discourse). The latter means that it represents a corresponding finite verb form of the "oratio recta" (of the direct speech or discourse), thus a declarative infinitive denotes both tense and aspect or stage of action. But the present infinitive represents either a present indicative or an imperfect one, and a perfect infinitive either a perfect indicative or a pluperfect one. A declarative infinitive with the particle is also the representative of a potential indicative or potential optative of the corresponding tense. Verbs that usually have a
Perfect (grammar) and is thus used to mean both "have/has done something" and "did something" (the preterite use). Other related forms are the pluperfect, denoting an event prior to a past time of reference, and the future perfect, for an event prior to a future time of reference. In the grammar of some modern languages, particularly of English, the "perfect" may be analyzed as an aspect that is independent of tense – the form that is traditionally just called the perfect ("I have done") is then called the present perfect, while the form traditionally called the pluperfect ("I had done") is called