“Mercy is the true badge of nobility.”

Mercy is a noun common, of the neuter gender, third person, singular number, and in the nominative case to “is:”  RULE 3. The nominative case governs the verb.

Is is an irregular neuter verb, indicative mood, present tense, third person, singular number, agreeing with “mercy,” according to RULE 4. The verb must agree, &c.

The is a definite article, belonging to “badge,” in the singular number:  RULE 2. The definite article the, &c.

True is an adjective in the positive degree, and belongs to the noun “badge:”  RULE 18. Adjectives belong, &c.

Badge is a noun com. neuter gender, third person, singular number, and in the nominative case after “is,” and put by apposition with “mercy,” according to RULE 21. The verb to be may have the same case after it as before it.

Of is a preposition, connecting “badge” and “nobility,” and showing the relation between them.

Nobility is a noun of multitude, mas. and fem. gender, third person, sing, and in the obj. case, and governed by “of:”  RULE 31. Prepositions govern the objective case.

EXERCISES IN PARSING.

Learn to unlearn what you have learned amiss.

What I forfeit for myself is a trifle; that my indiscretions should reach my posterity, wounds me to the heart.

Lady Jane Gray fell a sacrifice to the wild ambition of the duke of
Northumberland.

King Missipsi charged his sons to consider the senate and people of Rome as proprietors of the kingdom of Numidia.

Hazael smote the children of Israel in all their coasts; and from what is left on record of his actions, he plainly appears to have proved, what the prophet foresaw him to be, a man of violence, cruelty, and blood.

Heaven hides from brutes what men, from men what spirits know.

He that formed the ear, can he not hear?

He that hath ears to hear, let him hear.

NOTE 1. Learn, in the first of the preceding examples, is a transitive verb, because the action passes over from the nom. you understood, to the rest of the sentence for its object:  RULE 24.  In the next example, that my indiscretions should reach my posterity, is a part of a sentence put as the nominative to the verb wounds, according to the same Rule.

2.  The noun sacrifice, in the third example, is nom. after the active-intransitive verb fell:  RULE 22.  The noun proprietors, in the next sentence, is in the objective case, and put by apposition with senate and people:  RULE 7, or governed by consider, understood, according to RULE 35.

3.  In the fifth example, what, following proved, is a compound relative.