给你两句句子
we are looking forward to holding a party.
我们很想开一个派对.
这里的to 是介词
He looked forward to see where his mother would go.
他向前看看了,想知道他妈妈要去哪里.
这里表示,往前看,to 是动词不定式
look forward to
期盼（to之后接名词或动名词）
I look forward to working with you again.
我非常期盼再与你工作.
Is he looking forward to seeing me at all?
他真的很期盼见到我吗?
不懂问我