▲句中的不定式用法是恰当的，该不定式在此用作状语，表示结果。句意为：

There is a large mirror at one end to create the illusion of more space. 一端有一面大镜子，造成空间比实际更大的感觉。

▲其他用不定式作结果状语的例句：

What have I done to offend you. 我干什么惹你生气了?

She left home, never to be seen again. 她离开了家，人们再没见到她。

Iron reacts with water and air to produce rust. 铁与水和空气起化学反应而生锈。

He returned home to find his wife waiting for him. 他回到家发现他的妻子在等他。

He woke up to find himself alone in the house. 他一觉醒来发现房子里只剩下他一个人了。

▲如果将原句中的不定式改为现在分词也可以，但它所充当的句子成分便不再是结果状语，而是定语，修饰mirror：

There is a large mirror at one end creating the illusion of more space. 一端有一面大镜子，这面镜子让人感觉空间比实际的要大。