done是形容词，为什么being是动词

done 不是形容词，是过去分词beingdone为现在分词被动语态。

done是do的过去分词形式，being done是do的进行时被动态

1，现在进行时态的被动语态is/are being done:

A new bridge is being built over the Qiantang River at the moment.钱塘江上正在修建一座新桥。

The cliffs are being constantly eroded by heavy seas.峭壁不断被汹涌的海水侵蚀。

A hotel room is being prepared for them.

正在为他们准备酒宴

表示动作正在发生，同时动作是被动的，就要用现在进行时态的被动形式。

2，过去进行时态的被动语态was/were being done

I got the feeling I was being watched.

我感觉受到了监视。

The cars were being sold at an average price of $11000.这些汽车以平均11000美元的价格销售

1. being为助动词时的用法

当being为助动词时，用作谓语动词动词的being主要与过去分词连用，构成被动语态。

如：

I'm always being criticized. 我总是挨批。

He is being interviewed now. 他现在正在接受面试。

He is being met at the station tonight. 今晚有人去车站迎接他。

2. being为连系动词时的用法

当being为连系动词时，用作谓语动词动词的being主要与形容词连用，表示临时特征或暂时现象。如：

You’re being stupid. 你真傻。

You are not being very polite. 你可是不大客气呀。

Your brother is being very annoying this evening. 你兄弟今晚很烦人。