What is the name of a structure that usually contains "how" or "what" and inverted word order but is not a question?
Example: "Our goal is to investigate until we know how it was done".
What is the name of a structure that usually contains "how" or "what" and inverted word order but is not a question?
Example: "Our goal is to investigate until we know how it was done".
In the sentence "Our goal is to investigate until we know how it was done" the bold part is a free relative clause (nominal relative clause, a fused relative construction, an independent relative clause, or (in traditional grammar) a noun clause); a type of relative clause (that is, a word group beginning with a wh-word) that contains the antecedent within itself.
A free relative can refer to people or things, and it can function as a subject, a complement, or an object.