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How do I use "would", "could", "should", "would have", "could have", "should have", "would have been", "could have been", and "should have been" in a proper way?
A general overview would be great.
"Would," "could," and "should" are all modal verbs used to indicate possibility, ability, or obligation in the present or future. "Would have," "could have," and "should have" are all used to indicate that something was possible, but did not happen in the past. "Would have been," "could have been," and "should have been" are all used to indicate that something was not reality in the past, but it could have been. Is that clear?