antecedent|antecedents

工业革命是现代经济发展的重要前导。

The Industrial Revolution was a key ___antecedent to modern economic development.

他的祖先是来自意大利的移民。

His ___antecedents were immigrants from Italy.

在句子'老师表扬了她的学生'中，'老师'是'她的'的先行词。

In the sentence 'The teacher praised her students,' 'teacher' is the ___antecedent of 'her.'