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  2. Perfect (grammar) - Wikipedia

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

    The word perfect in this sense means "completed" (from Latin perfectum, which is the perfect passive participle of the verb perficere "to complete"). In traditional Latin and Ancient Greek grammar, the perfect tense is a particular, conjugated-verb form.

  3. Uses of English verb forms - Wikipedia

    en.wikipedia.org/wiki/Uses_of_English_verb_forms

    The past perfect, sometimes called the pluperfect, combines past tense with perfect aspect; it is formed by combining had (the past tense of the auxiliary have) with the past participle of the main verb. It is used when referring to an event that took place prior to the time frame being considered. [10]

  4. English auxiliary verbs - Wikipedia

    en.wikipedia.org/wiki/English_auxiliary_verbs

    The first English grammar, Bref Grammar for English by William Bullokar, published in 1586, does not use the term "auxiliary" but says: All other verbs are called verbs-neuters-un-perfect because they require the infinitive mood of another verb to express their signification of meaning perfectly: and be these, may, can, might or mought, could, would, should, must, ought, and sometimes, will ...

  5. English grammar - Wikipedia

    en.wikipedia.org/wiki/English_grammar

    Professor Whitney in his Essentials of English Grammar recommends the German original stating "there is an English version, but it is hardly to be used." (p. vi) Meyer-Myklestad, J. (1967). An Advanced English Grammar for Students and Teachers. Universitetsforlaget-Oslo. p. 627. Morenberg, Max (2002). Doing Grammar, 3rd edition. New York ...

  6. Auxiliary verb - Wikipedia

    en.wikipedia.org/wiki/Auxiliary_verb

    An auxiliary verb (abbreviated aux) is a verb that adds functional or grammatical meaning to the clause in which it occurs, so as to express tense, aspect, modality, voice, emphasis, etc. Auxiliary verbs usually accompany an infinitive verb or a participle, which respectively provide the main semantic content of the clause. [1]

  7. Present perfect - Wikipedia

    en.wikipedia.org/wiki/Present_perfect

    In English, completed actions in many contexts are referred to using the simple past verb form rather than the present perfect. English also has a present perfect continuous (or present perfect progressive) form, which combines present tense with both perfect aspect and continuous (progressive) aspect: "I have been eating". The action is not ...