语法：Scarlette must make many difficult choices,as exemplified by her forcing herself to leave Gus

为什么by后面一定要加her?与后面的herself是不是重复了？
如果不加会造成歧义吗？
谢谢！！

force 为及物动词，后面需跟宾语：force sb to do sth
如，the universities were forced to cut staff.
大学被迫裁员。
在形式上，force的用法需加herself，不然意义不受影响，但语法错误。

Scarlette 必需做出许多艰难的抉择，比如迫使自己离开Gus.
希望满意，祝您进步：）

原句：Scarlette must make many difficult choices,as （what is 被省略）exemplified by her forcing herself to leave Gus。 exemplified by sb。由某人例证。固定搭配，由。。。经过。