"Happily" is the adverb in the sentence "He sang happily.".    From LearnThat.org. 

(As a possible mnemonic, adverb is a single word and noun phrase is two words.).    From Wordnik.com.  [2008 January « Motivated Grammar] Reference

Perhaps no adverb is necessary? blog comments powered by Disqus publicola nerds.    From Wordnik.com.  [Narrowly? « PubliCola] Reference

The adverb is a nonce formation in both languages.    From Wordnik.com.  [Archive 2009-07-01] Reference

In this instance the adverb was a monumental qualifier.    From Wordnik.com.  [The Alibi]

Sorry, I've just realized that you wrote "the adverb is a nonce formation".    From Wordnik.com.  [On a child's view of English] Reference

The adverb is the enemy of the verb.    From Wordnik.com.  [Patricia Benesh: Mark Twain's Discourse: A Timeless Writing Course] Reference

Anticonstitutionnellement listen to this word adverb 1. unconstitutionally.    From Wordnik.com.  [French Word-A-Day:] Reference

The adverb is not your friend.    From Wordnik.com.  [Bad Timing] Reference

Also used as an adverb, meaning formerly.: former morri029 about 13 hours ago.    From Wordnik.com.  [Roll 'Bama Roll] Reference

Respecting the form of this adverb, see Zumpt, S 266.    From Wordnik.com.  [C. Sallusti Crispi De Bello Catilinario Et Jugurthino] Reference

A phrase that does the work of an adverb is called an.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

I won't use an adverb to modify said, I'll tell you that.    From Wordnik.com.  [Newsmakers] Reference

An adverb clause may be contracted to an absolute phrase.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

A clause that does the work of an adverb is an +adverb Clause+.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

If the interrogative word is an adverb, the order is transposed.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

These boys were using it as a verb, an adverb, even a participle.    From Wordnik.com.  [In Defense Of *$##@&Amp;$%#] Reference

You don't control every noun, adjective and adverb of everybody's speech.    From Wordnik.com.  [Liberal Democrat conference live - Wednesday 22 September] Reference

An adverb clause may sometimes be changed to an adjective clause or phrase.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

An adverb clause may be contracted into a participle or a participle phrase.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

Every Latin word has its function as noun or verb or adverb ticketed upon it.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

Tell why the adverb clauses in Lesson 68 are or are not set off by the comma.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

+ -- Be careful to distinguish an adjective complement from an adverb modifier.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference

An adverb clause may be contracted by simply omitting such words as may easily be supplied.    From Wordnik.com.  [Higher Lessons in English A work on english grammar and composition] Reference