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  2. Modal verb - Wikipedia

    en.wikipedia.org/wiki/Modal_verb

    That can indeed hinder. You can, if you are allowed. She can really sing. could: That could happen soon. – He could swim when he was young. may: That may be a problem. May I stay? – might: The weather might improve. Might I help you? – must: It must be hot outside. Sam must go to school. – shall: This shall not be viewed kindly. You ...

  3. English modal auxiliary verbs - Wikipedia

    en.wikipedia.org/wiki/English_modal_auxiliary_verbs

    The English modal auxiliary verbs are a subset of the English auxiliary verbs used mostly to express modality, properties such as possibility and obligation. [a] They can most easily be distinguished from other verbs by their defectiveness (they do not have participles or plain forms [b]) and by their lack of the ending ‑(e)s for the third-person singular.

  4. Modality (semantics) - Wikipedia

    en.wikipedia.org/wiki/Modality_(semantics)

    The sentence in (1) might be spoken by someone who has decided that all of the relevant facts in a particular murder investigation point to the conclusion that Agatha was the murderer, even though it may or may not actually be the case. The 'must' in this sentence thus expresses epistemic modality: "'for all we know', Agatha must be the ...

  5. Defective verb - Wikipedia

    en.wikipedia.org/wiki/Defective_verb

    In linguistics, a defective verb is a verb that either lacks a conjugated form or entails incomplete conjugation, and thus cannot be conjugated for certain grammatical tenses, aspects, persons, genders, or moods that the majority of verbs or a "normal" or regular verb in a particular language can be conjugated for [citation needed].

  6. Exercise (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Exercise_(mathematics)

    A distinction between an exercise and a mathematical problem was made by Alan H. Schoenfeld: [2] Students must master the relevant subject matter, and exercises are appropriate for that. But if rote exercises are the only kinds of problems that students see in their classes, we are doing the students a grave disservice. He advocated setting ...

  7. Mathematical proof - Wikipedia

    en.wikipedia.org/wiki/Mathematical_proof

    That is, a 2 is even, which implies that a must also be even, as seen in the proposition above (in #Proof by contraposition). So we can write a = 2c, where c is also an integer. Substitution into the original equation yields 2b 2 = (2c) 2 = 4c 2. Dividing both sides by 2 yields b 2 = 2c 2. But then, by the same argument as before, 2 divides b 2 ...

  8. Additional Mathematics - Wikipedia

    en.wikipedia.org/wiki/Additional_Mathematics

    Each question may contain from zero to three subsets of questions with marks ranging from 2 to 8 marks. The total weighting of the paper is 80 marks and constitutes 44% of the grade. Paper 2 (Duration: 2 hours 30 minutes): Questions are categorised into 3 sections: A, B and C. Section A contains 7 questions which must all be answered. Section B ...

  9. List of linguistic example sentences - Wikipedia

    en.wikipedia.org/wiki/List_of_linguistic_example...

    Can can can can can can can can can can. – "Examples of the can-can dance that other examples of the same dance are able to outshine, or figuratively to put into the trashcan, are themselves able to outshine examples of the same dance". It could alternatively be interpreted as a question, "Is it possible for examples of the dance that have ...