1. When answering this question, discuss the various occasions when formal photos are typically required or preferred. These include significant life events such as weddings, graduations, and formal gatherings like galas or award ceremonies. 2. You can also mention professional settings where formal photos are necessary, such as for corporate profiles, business websites, and official documents like passports and IDs. Explain that formal photos help convey professionalism and respect for the occasion or requirement.

1. 在回答这个问题时，讨论正式照片通常需要或偏好的各种场合。这些场合包括婚礼、毕业典礼以及晚宴或颁奖典礼等重大生活事件。 2. 您还可以提到需要正式照片的专业环境，比如企业头像、商业网站以及护照和身份证等官方文件。解释说正式照片有助于表达专业精神和对场合或要求的尊重。