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modal auxiliary verb

A modal auxiliary verb, often simply called a modal verb or even just a modal, is used to change the meaning of other verbs (commonly known as main verbs) by expressing modality—that is, asserting (or denying) possibility, likelihood, ability, permission, obligation, or future intention.
Modal verbs are defined by their inability to conjugate for tense and the third person singular (i.e., they do not take an “-s” at the end when he, she, or it is the subject), and they cannot form infinitives, past participles, or present participles. All modal auxiliary verbs are followed by a main verb in its base form (the infinitive without to); they can never be followed by other modal verbs, lone auxiliary verbs, or nouns.
As with the primary auxiliary verbs, modal verbs can be used with not to create negative sentences, and they can all invert with the subject to create interrogative sentences.
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modal

1. Philosophy logic
a. qualifying or expressing a qualification of the truth of some statement, for example, as necessary or contingent
b. relating to analogous qualifications such as that of rules as obligatory or permissive
2. Metaphysics of or relating to the form of a thing as opposed to its attributes, substance, etc.

modal

(1)
(Of an interface) Having modes. Modeless interfaces are generally considered to be superior because the user does not have to remember which mode he is in.

modal

(2)

modal

(3)
In MS Windows programming, A window with the label "WS_MODAL" will stay on the screen and claim all the user-input. Other windows can only be accessed if the MODAL window is closed. Such a window would typically be used for an error dialog box to warn the user for something important, like "Critical error, shut down the system and restart".

modal

Mode-oriented. A modal operation switches from one mode to another. Contrast with non-modal.
References in periodicals archive ?
The problem for Nagle (1989: 363) resides in the auxiliary absence of the modals during these two periods, although he claims that shall, should and must were already advanced in auxiliarisation in Old English.
Montgomery (1989) reviews the historical link between the populations of Scotland, Northern Ireland and the American South, the three principal double modal regions and suggests that the origin of the double modals lies well before the first attested citations since speakers of Scottish English began to settle Northern Ireland in 1610.
We comprehensively utilized the joint surface dynamic characteristics simulation method, experimental modal analysis method, and substructure modal synthesis method to deeply study the dynamic characteristics of large complex combination structures.
The first step is to divide the engine into many substructures according to the dynamic substructure method, namely, the substructure modal synthesis method.
A frequency count of the modals is done for each speaker in each text for comparison (see Table 1 below).
Among the so-called central modals, these four modals frequently occur and are fairly well researched, though there is still plenty of room for further research into their pragmatic and sociolinguistic aspects.
He argues in particular that a number of desiderata should be taken into account when theorizing about the language of subjective uncertainty--for instance, an explanation should be given for 'Quine's third grade of modal involvement' (the issue of using a necessity operator on open formulae) exhibited by epistemic modals and by epistemic adjectives.
The interaction of voice and modals confirms the impersonal nature of the basic voice opposition in Estonian, and also highlights an important constraint on impersonalization.
Pragmatic factors determine how we use modals in communicative situations, especially speech.
Modal locutions are common enough to give modality an air of legitimacy.
Based out of Cincinnati, OH, The Modal Shop is a PCB Group Company that manufactures electrodynamic shakers and vibration test products, calibration systems and non-destructive testing systems for a variety of industries from national test labs to the industrial floor.
Recientemente se ha propuesto un programa para metafisica modal cuya tesis central es que, tratandose de cuestiones modales sobre lo posible y lo necesario y, en particular, en lo relativo a la existencia de "mundos posibles", no poseemos justificacion para creer en la existencia de ningun otro mundo aparte del actual (1).