① Excuse me, could you take a photo for me? 你好，可以帮我照张相吗？

② Sorry to bother you, but could you take a picture for us? 不好意思打扰了，你可以帮我们照张相吗？

告诉对方你照片想要什么样的，背景有什么：

① Get us with the Eiffel Tower please. 能帮我们把埃菲尔铁塔照上吗？

② Could you get the mountains in the picture? 你可以帮我们照上山吗？

可以这样感谢和夸赞：

① It looks great! Thank you. 太好看了，谢谢。

② Thank you very much. 非常感谢。

③ I appreciate it. Thanks! 谢谢你。