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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 ...
With some verbs expressing a present state, particularly the copula be and verbs expressing a mental state, the present simple is generally used: They are here; I know that. However other state verbs use the present progressive or present simple depending on whether the state is considered temporary or permanent: The pen is lying on the table ...
A number of multi-word constructions exist to express the combinations of present tense with the basic form of the present tense is called the simple present; there are also constructions known as the present progressive (or present continuous) (e.g. am writing), the present perfect (e.g. have written), and the present perfect progressive (e.g ...
The verbs have, do and say also have irregular third-person present tense forms (has, does /dʌz/, says /sɛz/). The verb be has the largest number of irregular forms ( am, is, are in the present tense, was, were in the past tense, been for the past participle).
This is followed by the simple past tense , and then the past participle. If there are irregular present tense forms (see below), these are given in parentheses after the infinitive. (The present participle and gerund forms of verbs, ending in -ing, are always regular. In English, these are used as verbs, adjectives, and nouns.)
The simple present is the most commonly used verb form in English, accounting for more than half of verbs in spoken English. [1] It is called "simple" because its basic form consists of a single word (like write or writes), in contrast with other present tense forms such as the present progressive (is writing) and present perfect (has written).
This is the case with certain strong verbs, where historical sound changes have led to a leveling of the vowel modifications: for example, let has both past tense and past participle identical to the infinitive, while come has the past participle identical (but a different past tense, came). The same is true of the verbs listed above under ...
As verbs in Spanish incorporate the subject as a TAM suffix, Spanish is not actually a null-subject language, unlike Mandarin (see above). Such verbs in Spanish also have a valency of 1. Intransitive and transitive verbs are the most common, but the impersonal and objective verbs are somewhat different from the norm. In the objective, the verb ...