Anonymous I think it is a dependent clause and needs another clause to make sense. ' Anonymous So why do people say it? As I said, it is polite.
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AnonymousI think it is a dependent clause and needs another clause to make sense.No, using 'would' in that way is just a form of courtesy, though as you surmise, its history probably lies in an 'if'-clause which is no longer required:
AnonymousSo why do