modal auxiliary verb

noun

Definition of modal auxiliary verb

grammar
: a verb (such as can, could, shall, should, ought to, will, or would) that is usually used with another verb to express ideas such as possibility, necessity, and permission

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“Modal auxiliary verb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/modal%20auxiliary%20verb. Accessed 16 Jan. 2021.

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