(3) INFINITIVE, consisting of an infinitive and the words dependent upon it; as in the sentence, "She left her home forever in order to present herself at the Dauphin's court."
Things used as Subject.
347. The subject of a simple sentence may be—
(1) Noun: "There seems to be no interval between greatness and meanness." Also an expression used as a noun; as, "A cheery, 'Ay, ay, sir!' rang out in response."
(2) Pronoun: "We are fortified by every heroic anecdote."
(3) Infinitive phrase: "To enumerate and analyze these relations is to teach the science of method."
(4) Gerund: "There will be sleeping enough in the grave;" "What signifies wishing and hoping for better things?"
(5) Adjective used as noun: "The good are befriended even by weakness and defect;" "The dead are there."
(6) Adverb: "Then is the moment for the humming bird to secure the insects."
348. The subject is often found after the verb—