Could with Past Tense?

Could has no tenses, no participles, and no infinitive form. There is no past tense, but could have followed by a past participle is used for referring to something in the past that was not real, or something that may possibly have been real: I could have been killed.

Could is past or future?

It is not future: it is timeless. "It is not possible for you to make me happy". "Could" is historically the past of "can", and in some contexts has that meaning; but (like most or all of the past tenses of modals) it can also be used timelessly.

Could sentences examples in past tense?

Could is used as the past tense of "can". I could help you learn English. We could come over next week. My friends could fix your car.
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Could is almost always used with a main verb.
  • I could not call you last week.
  • We could not drive the car yesterday.
  • They could not take the exam last week.
Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.