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  1. #1
    philipwei is offline Newbie
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    Default Did you know or Do you know

    Did you know that we have two kinds of memeory? or Do you know that we have two kinds of memory?

    One native speaker said that she will never ask such a question starting with "Do you know", as the speaker is asking the state before he or she mention this information, i.e., the past state. What about other native speakers?

    Or is there any authentic source stating this?

    Thanks.

  2. #2
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    Default Re: Did you know or Do you know

    Do you know that we have two kinds of memory?

    Perfectly acceptable sentence. I imagine some uni. student doing Psychology 101, learning this in a lecture or from a book, and telling someone. No doubt the details about short- and long-term memory are about to follow!

    Woops. I've just told every reader of your thread what the two types of memory are. And the title of your thread told everybody that there are two kinds of memory. I wonder how many readers knew that before your post?
    Let's ask them:

    Did you know (before reading this thread) that we have two kinds of memory?

  3. #3
    philipwei is offline Newbie
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    Default Re: Did you know or Do you know

    Thanks. I did not know that before I read there are two types of memory instead of three types of memory. Now I know there are only two types. So I guess most high school students do not know this now until they read about it. Our target reader is high school students in China and they learn nothing about psychology at this level.

  4. #4
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    Amigos4 is offline VIP Member
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    Default Re: Did you know or Do you know

    Quote Originally Posted by David L. View Post
    Do you know that we have two kinds of memory?

    Perfectly acceptable sentence. I imagine some uni. student doing Psychology 101, learning this in a lecture or from a book, and telling someone. No doubt the details about short- and long-term memory are about to follow!

    Woops. I've just told every reader of your thread what the two types of memory are. And the title of your thread told everybody that there are two kinds of memory. I wonder how many readers knew that before your post?
    Let's ask them:

    Did you know (before reading this thread) that we have two kinds of memory?
    My wife claims I have a third type of memory: selective memory! I seem to remember only what I want to remember while forgetting that my wife ever told me something else to remember!!! I'm not sure who will go crazy first...my wife or me!!

  5. #5
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    Default Re: Did you know or Do you know

    Oh dear! Something got derailed here, philipwei.

    I wasn't intending any lesson on human memory. I was trying to show situations in when we would use the present tense, "Do you know that we have two kinds of memory?"; and the past tense, "Did you know (before reading this thread) that we have two kinds of memory?"

    and so that, yes, you can start a question with "Do you know.."

    "Do you know a good restaurant you could recommend? We're new in town."

    Fat lot of good it will do my empty stomach if I ask, " Did you know a good restaurant..." The man might reply, " Yes, the Greasy Spoon. Delicious food, wonderful service. Such a pity it closed down."

  6. #6
    philipwei is offline Newbie
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    Default Re: Did you know or Do you know

    Thanks David. I got it.

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