Find adv. and word it modifies

Question

He courageously continued not only to compose but also to conduct performances.

courageously(adv)modifies continued
not (adv) modifies Only?
only(adv) modifies continued?
also (adv) modifies conduct?

Answer 1

... not only ... but also ...
This construction is one of several correlative conjunctions in English.
http://grammar.ccc.commnet.edu/grammar/conjunctions.htm#correlative_conjunctions
I would not consider them to be adverbs since they are primarily conjunctions.

Your choice and description of "courageously" is correct.

Answer 2

Thank you for that link. It was very helpful.

Answer 3

You're very welcome.