是动词词性。v. 观察注视看守警戒（watch的过去式）

She watched his receding figure.

她看着他的身影渐渐远去。

We watched as the sun went down.

我们看着夕阳西沉。

He watched her retreating figure.

他看着她的身影渐渐远去。

We watched in awed silence.

我们敬畏地默然观看着。

He watched her balefully.

他看着她，眼露恶意。