I have to return it because i have kept it for too long是什么句式（什么从句_英语解答

I have to return it because i have kept it for too long是什么句式（什么从句）

人气：347 ℃　时间：2020-01-30 03:11:10

解答

原因状语从句,后面的
because i have kept it for too long
修饰前面,表示原因.