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English definition of “could”


modal verb (POSSIBILITY)    strong /kʊd/ weak /kəd/
B1 used to express possibility , especially slight or uncertain possibility : A lot of crime could be prevented . She could arrive anytime now. This new drug could be an important step in the fight against cancer . Be careful with that stick - it could have gone in my eye !Possible and probable Grammar:Can, could or may: typical errorsGrammar:CouldGrammar:Could: formGrammar:Could: usesGrammar:Could: pastWe don’t usually use could to talk about single events that happened in the past.Grammar:Could, may and mightWe use could, may and might to express degrees of possibility. Many native speakers disagree on which one expresses more or less certainty.
(Definition of could modal verb (POSSIBILITY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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