by which, in which, from which 語法區別

（1）Here is Beijing,where I grow up.
where其實也是指代北京，不過where是在北京的意思，也就是 in Beijing

（2）Here is Beijing,in which I grow up.
其實which就是指代北京，也就是I grow up in which然後把in which提到了前面

（3）Here is Beijing,from which I come.
這句也好懂了吧，就是I come from which，which就是Beijing。

（4）Here is my car,by which I go to work.
這句就是 I go to work by which，which就是car

in from by使用哪個就是根據後半句的語境來決定的