There are some water and two pens on the desk.

问题描述:

There are some water and two pens on the desk.

there be 句型中的be 是 is 还是are必须根据它后面紧跟的事物来决定,这里water是不可数名词所以应该是there is。

结合以下一二楼的就可以了,2种用法都可以,反正注意就近原则就好了

THere is (就近原则,后面是不可数名词,用is)

额,不对,最好说:
There are two pens and some water on the desk