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Is it correct to write this in a formal letter:

My certificate is not valid anymore. Is there a way you could accept my expired certificate?"

Or should I use would instead of could? And what is the difference between those two?

tchrist
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2 Answers2

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I think it is fine.

I would write "would". To steal and potentially misapply from GrammerCop [sic]:

Would is definite, but conditional--it will happen if certain conditions are met. Could is a possibility--it may or may not come to be.

mikeY
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I think Is there a way you could? is asking a factual question; do the regulations allow for expired certificates in any circumstances, and if so when? This unfortunately invites the response 'Sorry, rule 7 requires a valid certificate'.

If you already know that, but you are pleading for a minor indulgence, what's wrong with please accept my expired certificate in the circumstances, which allows you to bring in all the reasons why they should be sympathetic?

Tim Lymington
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    +1 Could deals with possibilities (usually physical or legal), would deals with choices. "If he could fly would he choose to do so?" – bib Jul 13 '13 at 00:04