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. What was that noise?
Could examples in the past?
past ability. You could see a movie or go out to dinner. suggestion.
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John could go to jail for stealing the money.
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John could go to jail for stealing the money.
- Mary couldn't be the one who stole the money.
- Mary couldn't have been the one who stole the money.
- Mary couldn't possibly go to jail for the crime.
Could and would in the past?
Trick to Remember the Difference
A good way to remember the differences between these two words is simply to bring each word back to its root verb. Could is the past tense of can. Would is the past tense of will.
