Modal verbs express if something is certain, probable or possible. If something is possible in the future, we use 'could', 'might' or 'may' before the main verb to talk about it. If something is possible now or was possible in the past we add the word 'have' after the modal verb. This still expresses possibility
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Answer:
Modal verbs express if something is certain, probable or possible. If something is possible in the future, we use 'could', 'might' or 'may' before the main verb to talk about it. If something is possible now or was possible in the past we add the word 'have' after the modal verb. This still expresses possibility
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