Noun Clauses - GrammarBank
https://www.grammarbank.com/noun-clauses.htmlNoun clauses as a subject: What she is doing is not known. What you said is not clear. Where she lives is not considered. Noun clauses as an indirect object: I will give whoever gets the best mark a new calculator. Martha will give whoever she sees there her old bag. Noun clauses after linking verbs be, become, seem, look.