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  2. Present perfect - Wikipedia

    en.wikipedia.org/wiki/Present_perfect

    The present perfect is a grammatical combination of the present tense and perfect aspect that is used to express a past event that has present consequences. [1] The term is used particularly in the context of English grammar to refer to forms like "I have finished".

  3. Perfect (grammar) - Wikipedia

    en.wikipedia.org/wiki/Perfect_(grammar)

    The basic (present) perfect form, with the auxiliary in the present tense, may specifically carry the meaning of perfect aspect, as in English; however in some languages it is used more generally as a past tense (or preterite), as in French and German. The use of auxiliaries and meaning of the constructions in various languages are described below.

  4. Uses of English verb forms - Wikipedia

    en.wikipedia.org/wiki/Uses_of_English_verb_forms

    It is formed with the present tense of the auxiliary have (namely have or has) and the past participle of the main verb. The choice of present perfect or past tense depends on the frame of reference (period or point in time) in which the event is conceived as occurring. If the frame of reference extends to the present time, the present perfect ...

  5. Principal parts - Wikipedia

    en.wikipedia.org/wiki/Principal_parts

    In Latin, most verbs have four principal parts.For example, the verb for "to carry" is given as portō – portāre – portāvī – portātum, where portō is the first-person singular present active indicative ("I carry"), portāre is the present active infinitive ("to carry"), portāvī is the first-person singular perfect active indicative ("I carried"), and portātum is the neuter supine.

  6. Grammatical aspect - Wikipedia

    en.wikipedia.org/wiki/Grammatical_aspect

    ki’ere NEG. PST vau 1. SG i PFV haere go i PREP te ART fare house ki’ere vau i haere i te fare NEG.PST 1.SG PFV go PREP ART house 'I did not go to a house.' Non-past negative (Regular negative) kāre kāre NEG. NPST tā-koe ART - 2SG puta book kāre tā-koe puta NEG.NPST ART-2SG book 'You don't have your book.' (Lit. 'Your book doesn't exist') Hawaiian The Hawaiian language conveys aspect ...

  7. Sequence of tenses - Wikipedia

    en.wikipedia.org/wiki/Sequence_of_tenses

    In Latin, the sequence of tenses rule affects dependent verbs in the subjunctive mood, mainly in indirect questions, indirect commands, and purpose clauses. [4] If the main verb is in one of the non-past tenses, the subordinate verb is usually in the present or perfect subjunctive (primary sequence); if the main verb is in one of the past tenses, the subordinate verb is usually in the ...

  8. English verbs - Wikipedia

    en.wikipedia.org/wiki/English_verbs

    The pronunciation of the past tense ending follows similar rules to those for the third person present tense ending described above: if the base form ends in /t/ or /d/ then a new syllable /ɪd/ or /əd/ is added (as in drifted, exceeded); if the base form ends in an unvoiced consonant sound other than /t/ then the ending is pronounced /t/ (as ...

  9. Perfective aspect - Wikipedia

    en.wikipedia.org/wiki/Perfective_aspect

    The terms perfective and perfect should not be confused. A perfect tense (abbreviated PERF or PRF) is a grammatical form used to describe a past event with present relevance, or a present state resulting from a past situation. For example, "I have put it on the table" implies both that I put the object on the table and that it is still there ...