Dave's ESL Cafe's Student Discussion Forums

[rcornudella]

I have doubts using �could have� and �might have�. Both express possibility, but which and when?
And I have another doubt using �could, should, might and would� when I ask for when �to use� something.
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Roger

[lotus]

Those are modals or auxiliary verbs.

For more information, go to this site:
http://grammar.ccc.commnet.edu/GRAMMAR/auxiliary.htm



--lotus
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War does not make one great --Yoda