Share Modal Verbs in the Past
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What modal verbs do we use to express regret?
Should have
How do we show criticism using modal verbs?
Shouldn't have
What modal verbs do we use to recommend someone do something?
Could have, should have
May, might, and could are used to...
Speculate
When we don't believe how something occurred we use...
Can't have
When do we put "NOT" in negatives
After the modal
Can we use mustn't have for speculations?
No
What modal verb do we use to show a past obligation?
Had to.
For possibilities in the past, are might and could interchangeable?
Not always, but it's possible.
Difference between would have and could have when we talk about possibilities in the past?
Would = involuntary ; Could = voluntary
To elaborate on past deductions what do we use?
Must have, may have, might have, and should have.
When we use might have or may have in past deductions it means...
we're not certain about how the situation happened
When we use could've in past possibilities what does it mean?
something is possible in the past but didn’t happen or it was a past possibility with an unreal outcomes
They're used to make a comment about the past based on obvious situations.
Must have, can't have.
What modal verbs do we use to refer to different possibilities in the past?
Might have or may have
When a situation didn’t happen or wasn’t going to happen we use...
Couldn't have
