Someone reading your writing must know the order of events to understand them. Irregular verbs simply have different endings from regular verbs and from each other as well. You can see some examples below. Present Infinitive Tense - the preposition to can be placed in front of any of these verbs to form an infinitive. Past Tense verbs show the reader an event that has already occurred.
Grammarians generally recommend that the irregular verbs be memorized for ease of use.
However, the variety of the verbs listed should lend an idea of the variety of verb forms available in English, and a large number of resources are available. For this page, I have used the Watkins and Dillingham Practical English Handbook, 10th Ed. Other differences among verbs also exist. Verbs that can take objects are called transitive, and verbs that do not are called intransitive. Most verbs are transitive, but some transitives are easily confused with the intransitives.