might I have a cookie please? very proper
may I have a cookie? propper
could I have a cookie? common usage
6 juillet 2015
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the second one is good.Learning here.
6 juillet 2015
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Look for the following examples they may help you to understand them :
I might go to the cinema tonight.
I may go to the cinema tonight.
I could go to the cinema tonight.
And all of them are for possibility.
If you have a particular point to ask about if you haven't got your answer yet.
6 juillet 2015
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