International Catholic University
Latin Verbal System: Four Conjugations
Step One: Memorize the four principal parts
First Conjugation
| 1st | 2nd | 3rd | 4th |
|---|
| laudo | laudare | laudavi | laudatum |
| amo | amare | amavi | amatum |
Second Conjugation
| 1st | 2nd | 3rd | 4th |
|---|
| moneo | monere | monui | monitum |
| video | videre | visi | visum |
Third Conjugation
| 1st | 2nd | 3rd | 4th |
|---|
| ago | agere | egi | actum |
| duco | ducere | duxi | ductum |
Fourth Conjugation
| 1st | 2nd | 3rd | 4th |
|---|
| audio | audire | audivi | auditum |
| venio | venire | veni | ventum |
Third Conjugation -io verbs
| 1st | 2nd | 3rd | 4th |
|---|
| facio | facere | feci | factum |
| capio | capere | cepi | captum |
Latin Verbal System: Sum, esse, fui, futurus
| | Present | Imperfect | Future | Perfect |
|---|
| Singular |
|---|
| 1st | sum | eram | ero | fui |
| 2nd | es | eras | eris | fuisti |
| 3rd | est | erat | erit | fuit |
| Plural |
|---|
| 1st | sumus | eramus | erimus | fuimus |
| 2nd | estis | eratis | eritis | fuistis |
| 3rd | sunt | erant | erunt | fuerunt |