Practically, seven tenses of the indicative must be transformed into three available infinitival tenses. Such "infinitive clauses" or "infinitival clauses", are one of several kinds of non-finite clause. Although the verb here is infinitival, it cannot grammatically take an AP complement. For example, in a number of languages the infinitival is the auxiliary designating the future. The verb here is infinitival, without inflected tense, and takes a PP complement.