"晚上用英语怎么说"在英文中可以表达为 "How to say evening in English".
If you are asking for the phrase or sentence that describes the time of day, it could be "in the evening" or "at nighttime".
If you want to ask about activities that happen in the evening, you could ask "What do people do in the evening?"
If you want to talk about the specific time of evening, it could be "what time does evening start and end?"
Please note that these are just a few examples, and the exact phrasing might change depending on the context and location.