He is being smart. 本来聪明是一个特性，加上进行时就变成展示、表现这种特性(确实具有该特性)，又或者故意伪装这种特性(并不具有该特性)。所以He is being …
You are being mean.-- They are doing something mean right now. You are being argumentative. - They are being argumentative right now. "You are" is …
In this mini lesson I’m diving into a question that I am frequently asked by my students: You are, or you are being? The distinction between the two can often …
使用”being”指的是這些人的行為，而非長期以來的個性或特質。 以下還有一些例子，相信你已經知道是指行為或是特質了： ex. Elaine is being thoughtful. Elaine正 …
如果用进行时态 ”be being + 形容词”则表示是一次性的或暂时的状态，而且往往带有感情色彩，如赞扬、厌恶、等。 如：He's normally polite, but right now he is …
更多内容请点击：He is being smart中为什么加个being，直接去掉不更好吗? - 知乎