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学员疑问： Researchers analyzed the writings of bloggers with either terminal cancer who all died over the course of the study, and compared it to blog posts written by a group of participants who were told to imagine they had been diagnosed with terminal cancer and had only a few months to live. 老师，这个句中的either应该怎么理解呢？
老师解答：前文应该是提到过两种terminal cancers，这里either指”两者中的任一“
点评分析：对于以上这个句子中either的用法做判断，可以根据语境和语法来判断，根据语法，这里either为限定词（determiner）限定terminal cancer，从而意思可以基本确定为“两者中的任一”，只是那两者，光看这一个句子不能明确，那估计是上下文提到的了。
