Infinitive, Simple Past, Past Participle Verbs!!!!!

<p>Can someone explain these too me, the spark notes explanation didn't instill it into my head that great... </p>

<p>Thanks</p>

<p>You don't need to know the names of the tenses for the SAT, just how/when to use them.</p>

<p>Infinitives are "to eat" "to live"
Simple past is "he ate" "I lived"
Past participles are "eaten" "taken" "lived"</p>