I call it a noun clause, but more modern grammar analyses and terminology are also available. Here is a perhaps simpler example.. eg August is when we could finish the job.
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AnonymousadverbIt can't be this one because of the modal "could". I would call when we could finish the job an indirect question. Here's a more ambiguous one:
CalifJimThey asked us to tell them when we finished the job.But I still wonder whether an indirect question can do the job of the object thus being a noun clause.
AnonymousBut I still wonder whether an indirect question can do the job of the object thus being a noun clause.In the latest grammatical analyses, it would not be called an object nor a noun clause. Nevertheless, it occupies the same place in the sentence as an object would and therefore has some features in common with noun clauses as well. It's a compleme