如果你想请别人帮忙，可以这样说：

"Could you help me with something?"

"I was wondering if you could assist me with something?"

"Would you mind giving me a hand with this?"

"I could use some help with this, do you think you could help me out?"

"I'm having a bit of difficulty with this and was hoping for some assistance. Would you be able to help me?"

请别人帮忙时，要记得礼貌地表达你的请求。