| Kenneth G. Wilson (1923). The Columbia Guide to Standard American English. 1993. |
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| ago (adv., adj.) |
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| Ago is both adjective, as in The murder took place many years ago, and adverb, as in The murder took place long ago. It is Standard in both uses. See SINCE. | 1 |
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| | | The Columbia Guide to Standard American English. Copyright © 1993 Columbia University Press. |
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