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It's blue. I am certain that it is blue. It's a fact.
It could be blue. (present) I'm not certain that it is blue.
The storm will get worse. I'm certain that the storm will get worse.
The storm could get worse. (future) I'm not certain that the storm will get worse.
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Could, may or might convey the idea of future possibility. Of these, may expresses a stronger degree of certainty that an event will occur. For example: The ...
May 28, 2015 · 3. Examples · They might attend the awards ceremony tomorrow night. · He could call you back tonight. · We could choose a new color of paint for ...
Nov 27, 2013 · Could (Modals) ... 'Could' is used to express: possibility, past ability, and to make suggestions and requests. ... future. Here are some examples ...
"Could" is also commonly used in conditional sentences as the conditional form of "can." Examples: Extreme rain could cause the river to flood the city.
As the page says, can is used for general statements about possibility while could is more specific. In your examples, the first sentence is a general statement ...
Modal Verbs of Possibility. Using 'Can': (Present and Future); Using 'Could' (Present, Future, Past) ; Negation. Cannot; Could Not; May Not and Might Not ; Past ...
Jan 5, 2024 · How to use modal verbs in the past tense speaking of future possibility? 1 · could vs might (for expressing the future possibility) · 1.