I saw the sentence "Is er iets wat u altijd al hebt willen weten over taal?" in a website and I need help understanding why it's constructed like this. "Is er iets wat" is just inverted "Er is iets wat" since it's a question, "wat" here is used I think because "iets" is unspecified which I understand. "Is er iets wat u" is just "Is there something that you", but I don't understand why everything after that is arranged in that way. First of all I don't understand why they use "altijd al" here instead of just "altijd", and I don't understand what "hebt willen" means, it's not past tense because that'd be "hebt gewild". Another thing is that I thought "wat" was a subordinating clause and so you had to put all the verbs at the end, but there's "over taal" there. Shouldn't this sentence be "Is er iets wat u altijd over taal hebt gewild weten"? Since "is er iets wat" is inverted because it's a question, "wat u altijd over taal hebt gewild weten" because it's a subordinate clause. Can someone explain why this sentence uses "altijd al", "hebt willen", and why it's constructed like this? Thanks!