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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.
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.
See Latin tenses. For other meanings of the perfect and pluperfect subjunctive, see Latin tenses#Jussive subjunctive. Other forms: Perfect infinitive active: amāvisse (amāsse) "to have loved" Perfect infinitive passive: amātus esse (amātum esse) "to have been loved" Perfect participle passive: amātus, -a, -um "loved (by someone)"
The past perfect progressive or past perfect continuous (also known as the pluperfect progressive or pluperfect continuous) combines perfect progressive aspect with past tense. It is formed by combining had (the past tense of auxiliary have), been (the past participle of be), and the present participle of the main verb.
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 ...
Cross-strait relations are notably tense at the moment after the election of Lai Ching-te and increased Chinese military exercises and incursions into Taiwan's waters and airspace.
Regular verbs have identical past tense and past participle forms in -ed, but there are 100 or so irregular English verbs with different forms (see list). The verbs have, do and say also have irregular third-person present tense forms (has, does /dʌz/, says /sɛz/).
This activity stirs the neurons in our head and according to Mark Rosekind, PhD and former director of the Fatigue Countermeasures Program at the NASA Ames Research Center, it can make us tense ...