would you please...? could you please...? 两句区别是什么？

Could
you
please
是can
you
please
更为礼貌、委婉的说法，并不是过去式，是“能否麻烦你……”、“请你……”的意思，更侧重“能否”及客观情况；回答时要注意，eg：A:“Could
you
please
open
the
window?”肯定回答
B:“Of
course”；否定回答：B:“Sorry,
I
can't
open
it
because
the
windows
are
locked
on
the
train.”

而Would
you
please
含有说话者一定的希望，期待对方愿意做某事的意味，“请你……”，更侧重“愿否”及主观能动；回答时要注意，eg：A:“Would
you
please
open
the
window?”肯定回答：B:“OK”；否定回答：“I'm
sorry,
but
don't
you
feel
it
is
a
little
bit
too
cold
outside?”

尽管两者有小小差异，但是在日常口语中，似乎两者经常通用，并没有区分得那么明显。

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