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Modal verbs are a specific class of auxiliary verbs used to express attitudes such as p...
Modal verbs are a specific class of auxiliary verbs used to express attitudes such as possibility, obligation, or permission, often depending on the degree of formality. Regarding modal verbs, mark the CORRECT alternative.
A
Modal verbs are conjugated in the third person singular by adding the suffix "-s," following the standard rule for regular verbs in the simple present tense in English grammar usage in formal contexts.
B
The modal "should" is primarily used to express a logical deduction about a past event that did not happen, functioning as a perfect synonym for "could have."
C
The modal verb "can" is the most formal and recommended form for asking permission in official government documents and legal contracts in the United Kingdom.
D
The verb "must" and "have to" are semantically identical in all contexts, both being used exclusively to express internal obligations imposed by the speaker on themselves in formal discourse.
E
The modal verb "might" typically expresses a lower degree of probability than "may" in formal academic discourse, while "could" can be used to make polite requests or suggest possibilities.