derived subject theory

例句：

1. 1. This theory has beenwidely accepted by scholars and practitionersalike.
   这一理论已被学者和实践者广泛接受。
2. 2. The derivational subject theoryprovides a useful framework for understanding language change.
   派生主体理论为理解语言变化提供了一个有用的框架。
3. 3. In the derivationalsubject theory, the relationship between the subjectand the predicate is not asclear-cut as in traditional grammar.
   在派生主体理论中，主语与谓语之间的关系并不像传统语法那样明确。