Please use the password you created

问题描述:

Please use the password you created
you created是什么用法,为什么不加个which is created by you?

you created是一个定语从句,修饰the password,由先行词password是在定语从句中充当created的宾语,因此将关系代词that/which给省略了.
这个部分也可以改为一个过去分词:Please use the password created by you.