refer to本身就是动词短语，后面接名词性词语。refer to do查询，提到，但是to不一定是不定式的标志，也可是介词短语，不定式可做定语，目的状语，结果状语，to do有时也表示还没做的事(将来)。

双语例句

1.I mention this point now in passing and shall refer to it again.

这一点现在顺便提一下，以后还会讲到。

2.There's the original to refer to.

有原文可按。

3.Please refer to the right-hand column of page 200 of this dictionary.

请参看这本词典第二百页右面一栏。