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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". The forms are present because they use the present tense of the auxiliary verb ...
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. Modern analyses view the perfect constructions of these languages as combining elements of ...
Imperfect. The imperfect ( abbreviated IMPERF) is a verb form that combines past tense (reference to a past time) and imperfective aspect (reference to a continuing or repeated event or state). It can have meanings similar to the English "was walking" or "used to walk". It contrasts with preterite forms, which refer to a single completed event ...
Sir David Frederick Attenborough (/ ˈ æ t ən b ə r ə /; born 8 May 1926) is a British broadcaster, biologist, natural historian, and writer.He is best known for writing and presenting, in conjunction with the BBC Natural History Unit, the nine natural history documentary series forming the Life collection, a comprehensive survey of animal and plant life on Earth.
The Cambridge Grammar of the English Language ( CamGEL [n 1]) is a descriptive grammar of the English language. Its primary authors are Rodney Huddleston and Geoffrey K. Pullum. Huddleston was the only author to work on every chapter. It was published by Cambridge University Press in 2002 and has been cited more than 8,000 times.
The simple past, past simple, or past indefinite, in English equivalent to the preterite, is the basic form of the past tense in Modern English. It is used principally to describe events in the past, although it also has some other uses. [1] Regular English verbs form the simple past in -ed; however, there are a few hundred irregular verbs with ...
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