look through it的it位置放对了没有？

through 是一个介词 ,介词可以跟代词it.
完全正确!

seems wrong, give us the whole sentence

不应该这么用吧，呵呵我知道的“look through”大概有这么几个意思,给你几个例子你看看你想表达的是哪个意思哈：）
look through a window透过窗户看过去
look through the opponent's trick识破对手的花招
The auditor looked through all the vouchers.审计员审核了全部凭单。
The cruety and greed of the hungry wolf look through its eyes.饿狼的眼中露出凶残贪婪的目光。
（以上全部原创）