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    #1

    Herbal medicine dates back more than 2000 years ago in China.

    Could you please tell me whether the following two sentences are grammatically
    correct?

    1. Herbal medicine dates back more than 2000 years ago in China.
    2. The tradition dates back as early as to the 1920s.

    Do we need to place "ago" in the first sentence and "to" in the second sentence?

    Thanks a lot.

  1. Matthew Wai's Avatar
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    #2

    Re: Herbal medicine dates back more than 2000 years ago in China.

    'The custom dates back hundreds of years.'── quoted from http://www.oxfordlearnersdictionarie...english/date_2
    So it seems that 'ago' can be omitted. I think 'to' should be put before 'as early as'.

    Not a teacher.
    Last edited by Matthew Wai; 17-Sep-2014 at 14:20.

  2. bhaisahab's Avatar
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    #3

    Re: Herbal medicine dates back more than 2000 years ago in China.

    Both "ago" and "to" should be omitted.

  3. Matthew Wai's Avatar
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    #4

    Re: Herbal medicine dates back more than 2000 years ago in China.

    Do you mean 'to' should be omitted as long as 'as early as' is used?

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    #5

    Re: Herbal medicine dates back more than 2000 years ago in China.

    Yes- use either as early as or to, but not both.

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