告诉他们原因英语怎么说

To tell someone the reason in English, you can use the phrase "to give a reason" or "to provide an explanation." The phrase "to give a reason" means to provide a justification or explanation for something, while "to provide an explanation" means to give more information or details about something to help someone understand it better.

Here are some examples of how you can use these phrases in English, along with their translations in Chinese:

"Can you give me a reason for why you're late?" (你能告诉我你为什么迟到的原因吗？)
"I need to give a reason for my absence at the meeting." (我需要为我不能参加会议提供一个原因。)
"He provided an explanation for his behavior." (他为他的行为提供了解释。)

The phrases "to give a reason" and "to provide an explanation" are commonly used in English to ask for or offer an explanation or justification for something. They are used in a variety of contexts, including in everyday conversation, in academic writing, and in professional settings.