Ther are often described as being reserved and cold.
They are also seen as being very barve.
Americans are often described as very loud,but they are also seen as being very friendly and intersted in talking to other people.
这是同一篇文章里看到的三句话,我就想知道为什么有时候加being,有时候又不加being 接形容词?有什么区别呢?