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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 necessarily complete; and the same is true of certain uses of the basic present perfect when the verb expresses a state or a ...
The present perfect may also be used with future reference, instead of the future perfect, in those dependent clauses where future occurrence is denoted by present tense (see § Dependent clauses below). For example: When you have written it, show it to me. For the possibility of a present perfect subjunctive, see English subjunctive.
In linguistics, aspect is a grammatical category that expresses how a verbal action, event, or state, extends over time. For instance, perfective aspect is used in referring to an event conceived as bounded and unitary, without reference to any flow of time during the event ("I helped him").
The perfect can also be combined with another aspect [21] that is marked in English – the progressive (or continuous) aspect. In perfect progressive (or perfect continuous) constructions, the perfect auxiliary (a form of have) is followed by the past participle been (from be, the auxiliary of the progressive aspect), which in turn is followed ...
The continuous aspect is constructed by using a form of the copula, "to be", together with the present participle (marked with the suffix -ing). [6] It is generally used for actions that are occurring at the time in question, and does not focus on the larger time-scale. For example, the sentence "Andrew was playing tennis when Jane called him."
Present perfect meaning. The perfect active can also be used like the English present perfect ('I have done'): [105] ecum et mūlum Brundisī tibī relīquī (Cicero) [106] 'I have left a horse and a mule for you at Brundisium' nunc quidem iam abiit pestilentia (Cicero) [107] 'the epidemic has now gone away' hīs dē rēbus scrīpsī ad ...
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The bag-of-words model (BoW) is a model of text which uses an unordered collection (a "bag") of words.It is used in natural language processing and information retrieval (IR).