The negative form of could is could not or couldn't. To form the negative of be able to, you either put not or another negative word in front of able, or you use the expression be unable to. Please could you explain why you're so late.

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We use could have to say that someone had the ability or opportunity to do something, but did not do it: She could have learned swahili, but she didn't want to. Master the word could in english: The meaning of could is โ€”used in auxiliary function in the past, in the past conditional, and as an alternative to can suggesting less force or certainty or as a polite form in the present. Definition of could modal verb in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Could i borrow your pen?

Definition of could modal verb in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Could i borrow your pen? Could we see her now, please? Could i have some more pudding? Could i use your bathroom, please? Could i leave the children with you this morning?

Could i use your bathroom, please? Could i leave the children with you this morning?