1）May I take a photo with you? （最常用说法,简单而有礼貌的恳求）

2）Could we take a photo together? (简单而语气委婉)

3）Could I take a photo with you? (简单礼貌,但不如第一句)

4）Could I take a photo with you, please? (简单礼貌,比上句语气更委婉些)

5）Can I take a photo with you? (简单礼貌,但不如第一、二句)

6）Would you please take a photo with me? (礼貌,正式)

7）Would you mind taking a photo with me? (礼貌,正式)