Yossarian the Grammarian describes the infinitive as either an adjective, adverb, or noun. A sentence is given for each example on the whiteboard, comparing the infinitive to other adjectives, adverbs, and nouns so that the function of...

This video lesson from Yossarian the Grammarian gives a lesson on the topic of infinitive phrases. He also explains the way to test an infinitive phrase to see if it is used with grammatical correctness in a sentence. [5:46]