up to something意思?

母語人士的回答
Rebecca
up to something這裡的意思是有人在暗中做某事!當你問某人是否在up to something時,你是在問他們是否在秘密地做一些你不知道的事情。示例: I think he is up to something. Let's follow him. (我覺得他在偷偷摸摸,我們跟著他。) 例子: He is a quiet person who is always up to something. (他是一個悶悶不樂的人,總是偷偷摸摸地做事。)