寻求某人做某事用英文怎么说

询问某人做某事用英语可以使用 "Can/Could/Would you do something?" 或 "Can/Could/Would you help me with something?"。

"Can you do something?" 表示现在能否做某事。
"Could you do something?" 表示过去或将来能否做某事。
"Would you do something?" 表示将来愿意做某事。

例句：

Can you help me with my homework? (你能帮我做作业吗？)
Could you give me a hand with this project? (你能帮我完成这个项目吗？)
Would you mind taking care of my cat while I'm away? (你介意在我不在时照顾我的猫吗？)

另外还有一种说法是" Can/Could/Would you do me a favour?"
例句：

Can you do me a favour and pick up my kids from school? (你能帮我一个忙接我的孩子从学校吗？)
Could you do me a favour and grab some groceries for me? (你能帮我一个忙买点杂货吗？)
Would you do me a favour and give me a ride to the airport? (你能帮我一个忙送我去机场吗？)

这些短语都是英语中常用的请求别人帮忙的说法。这种语言来自于英语口语中的日常交流，是在非正式场合中常用的语言。