If you say that she used to be a geologist with Goelog Company, then it emphasizes that she is not doing that anymore. It would usually be followed by what her job is now. She used to be a geologist with Goelog Company, but now she is a professor at the University of Notre Dame.
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Geo RiyadIn these two examples above, when should I use was, and when should I use used to be.She used to be a geologist implies that her being a geologist came to an e