(Code and Color Key)

The Opening of "The Tell-Tale Heart"
-- Edgar Allan Poe
Analysis Key

     TRUE! [Inj.] nervous [#1] very, very dreadfully nervous

(PA) I had been and am; | but why will you say [DO that I am mad

(PA)]? | The disease had sharpened my senses (DO) not

destroyed [#2] not dulled [#2] them (DO). | {Above all} was

the sense {of hearing [#3] }acute (PA). | I heard all things (DO) {in 

the heaven} and {in the earth}. | I heard many things (DO) {in hell}. |

How, then, am I mad (PA)? | *You* Hearken! [#3] and observe

[DO how healthily how calmly I can tell you (IO) the whole

story (DO)]. |

1. I haven't seen any grammarians deal with cases of rhetorical repetition such as this, so I do not know how they would explain this, but within KISS students can either consider it to be a case of repetition, or they can consider one "nervous" as an appositive to the second.
2. Since there is no conjunction joining these two finite verbs to "had sharpened," when students get to appositives, some bright students are going to make the interesting suggestion that these two verb phrases function as negated appositives to "had sharpened."
3. "Hearing" is a gerund that functions as the object of the preposition.

Although "Hearken" is a verb, it also seems to function as an interjection here.