To parse a verb is to state its class, its conjugation, its voice, its mode, its tense, its person, and number, and its subject.
Model.—The boys have broken the window.
Have broken, a verb, transitive; strong conjugation (break, broke, broken); active voice; indicative mode; present perfect tense, third person; plural number, agreeing with its subject boys.
Model.—If they help my friend I shall be glad.
Help, a verb, transitive; weak conjugation (help, helped, helped); active voice; subjunctive mode; present tense; third person; plural number, agreeing with its subject they.
Shall be, a verb, intransitive; strong conjugation (am, was, been); indicative mode; future tense; first person; singular number, agreeing with its subject I.
Model.—Being provided with tools, they planted a row of stakes within their palisade, to form a double fence.
Being provided, a present participle; passive form, modifying they.
Planted, a verb, transitive; weak conjugation (plant, planted, planted); active voice; indicative mode; past tense; third person; plural number, agreeing with its subject they.
To form, a present infinitive; active voice; used as an adverb to modify planted.