When answering this question, you can talk about psychological reasons, such as impulse buying, emotional shopping, or being influenced by advertising and social media. Sometimes people buy things they don’t need because they want to feel happy or to keep up with trends. You can also mention that discounts and promotions can encourage people to make unnecessary purchases. Giving examples, like buying clothes just because they’re on sale, can make your answer more relatable.

回答这个问题时，你可以谈论一些心理原因，比如冲动购买、情绪购物，或者受到广告和社交媒体的影响。有时候人们买一些不需要的东西，是因为他们想要感到快乐或者跟上潮流。你也可以提到折扣和促销活动会促使人们进行不必要的购买。举例说明，比如仅仅因为衣服打折而购买，可以让你的回答更容易引起共鸣。