what are adverb clauses? is there anything like adverb noun clause and if so den how to differentiate the types of adverb clauses???
Adverbial clauses are typically those that serve, in the manner of simple adverbs, to specify when, why, how etc. the action of a verb takes place. They are normally introduced by subordinating conjunctions such as 'when', 'because' or 'although'.
Occasionally, however, a structurally nominal (noun-like) clause can serve an adverbial function, as the underlined part of
I was wondering what to do.
(generally analysed as elliptical prepositional phrases, i.e. with the nominal clause as the object of a suppressed preposition:
I was wondering about what to do.)
Such clauses, however, might well be labelled 'adverbial noun clauses'.