转向某人求助用英语怎么说

"Seek help from someone" 可以用 "ask for help from someone" 或 "turn to someone for help" 来表达。
举例：
I asked for help from my teacher when I was struggling with math. (我在数学上有困难时向老师求助。)
I turned to my friend for help when I couldn't fix my car. (当我不会修车时，我向朋友求助。)
其中 "ask for help" 是请求帮助的意思， "turn to" 是求助的意思。