I instructed the patient to return tomorrow.

return = adverb modifying verb is tomorrow.

The gentleman was unusually talkative when he came out of the anesthetic.
unusally = adverb mod/verb = talkative
out= adverb modifying verb = anesthetic

"I will never go there again," she said.
never = adverb, mod/verb go
again = adverb, mod/verb there
will = adverb, mod verb I

In your sentences, tomorrow. talkative, anesthetic, there and I are not verbs. You need to review your parts of speech.

I searched Google under the key words "parts of speech" to get these possible sources:

http://www.uottawa.ca/academic/arts/writcent/hypergrammar/partsp.html
http://eslus.com/LESSONS/GRAMMAR/POS/pos.htm
http://grammar.ccc.commnet.edu/GRAMMAR/definitions.htm

I hope this helps. Thanks for asking.

PsyDAG is correct. Please review the meanings of the different parts of speech.

Verbs are usually words that indicate something you can DO; sometimes there are linking verbs (be, am, is, are, etc.), but most verbs in our sentences indicate what we are doing.

In your first sentence, what word indicates something a person can DO?

In your second sentence, there are two verbs. The main verb is one of the "to be" verbs (a linking verb), and the verb in the subordinate clause is an action verb, something a person can DO.

In your third sentence, there are again two verbs -- one verb in the quotation and another which is the main verb of the sentence. Both are action verbs.

Name the verbs first. Then work on the others.

Actually, in the sentence "I will never go there again," the word "never" is an adverb modifying the verb "go." It is indicating the frequency or extent to which the action is performed. "Again" is also an adverb modifying the verb "go," indicating repetition or another occurrence. The word "will" is actually a modal verb here that expresses future tense or determination. Thus, "never" and "again" are both adverbs modifying the verb "go," while "will" is a modal verb indicating future tense or determination.