how to use 于 and examples.
The character yu 于. I don't understand to much. I know that 于 is used in words such as 关于 and such, but what are some example of it being used in a sentence and what does it mean?

Question

how to use 于 and examples.
The character yu 于.  I don't understand to much.  I know that 于 is used in words such as 关于 and such, but what are some example of it being used in a sentence and what does it mean?

Answer

于is a preposition .eg: 他生于北京。He was born in Beijing. 她勤于学习。She is industrious in study.于情于理means 在人情和道理上 常用词语：关于（关于这个问题，我们已经讨论过了），对于(对于我来说，快乐是最重要的。），属于（这个东西属于我），于是（then)……    (此外，于还有in ，at,on ,by ,from 等意思。“于”也是中国的一个姓）

Answer

这在于/取决于...=it depends on...
and here r translation in english:
1.in; at; on; by; from   (位于)
2.than; then; to; with reference to   (于是/关于)
3.compared with   (相较于...)
4.a Chinese family name