语法总结
现在完成时与 ever since
has had trouble、has put up、have ever seen 都把过去动作与现在联系起来。
相似句：
- I have lived here ever since 2020.
- She has had this car for years.
who 引导定语从句
those rare people who believe... 中 who 修饰 people，并在从句中作主语。
相似句：
- I know a man who speaks five languages.
- She is the girl who helped me.