bmo said:
How come store clerks always ask "Did you want something?" Since I am buying something now, shouldn't it be a present tense?
Now I am asking someone if he knows the history - Columbus discovered America? Do I say, "Did you know Columbus discovered America?" or "Do you know Columbus discovered America?"
Thanks.
BMO
How come store clerks always ask "Did you want something?" Since I am buying something now, shouldn't it be a present tense? <<
This I find rather interesting, and it is certainly not uncommon. In many situations, people employed in any type of service industry where they have dealings with customers would use this sort of expression. Using the past is somewhat indirect and would be heard as more polite. It sounds more deferential to the customer. This is not part of English grammar to my knowledge. People do it quite naturally and unconciously. Those that listen don't even give it a second thought when they hear it.
I hear it often enough. It lacks logic in tense and time, but makes sense when we regard it in a social context. We might also refer to this use of did as "remote" - socially remote meaning more distance between the speaker and the listener.
At restaurants I hear, "Did you want another drink?", "Did you want to order now?" - and there's more.
We can look at it this way:
"Could" can be used as the past of "can". "Could" can also be used to show more politeness.
We can also view it as follows:
"Could" is to "can" as "did" is to "do" when speaking of being polite or in some sort of "social" context.
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Now I am asking someone if he knows the history - Columbus discovered America? Do I say, "Did you know Columbus discovered America?" or "Do you know Columbus discovered America?" <<<
Normally, we would say "did" in such a question. We could use "do" for something that happened so long ago in order to be more emphatic. Let's imagine that someone thinks differently.
2 - Did you know that Columbus discovered America?
9 - Do you know that Columbus was European and that other people were in America before he ever discovered it? And -
Do you know that he very well may not have even been the first European to discover America? It is said that there is evidence that the Vikings were in Canada well before Columbus sailed across the Atlantic.
