The projected was observed by Ada’s supervisor, teacher and mother.
多个名词指代同一个人时的表达方法是什么，如本句，supervisor, teacher and mother 指代的同一个人，怎么样不同名词指代多个人/物还是同一个人/物？
The projected was observed by Ada’s supervisor, teacher and mother.
【答】Ada’s supervisor, teacher and mother：艾达的监护人、老师也是妈妈 —— 一人身兼三职。
本句，假如表达不同身份的三个人，则要在每一个名词之前，都加上Ada’s。
判断两个以上的表示身份的名词，是否同一个人，其办法是：察看这类名词之前，是不是都有冠词、物主代词或名词属格修饰，假如只有一个冠词、物主代词或名词属格限定这类名词，那样就是指同一个人。
又如：
The poet and the writer will meet tomorrow. 诗人和作家明天要会面
The poet and writer has produced many works. 这个诗人兼作家创作了不少作品。
She is a teacher and mother of Tom. 她既是汤姆的老师也是妈妈。
