This present tense describes what you are doing now, and the past tense what you have already done.
The past tense is formed by using a (compressed version) of a avea (to have) which is placed in front of the past participle.
The past participle is formed by adding an t to verbs of the first and fourth conjugation (with endings a and i respectively), and fiddling around somewhat with conjugations two and three (see below).
A lucraa (to work) is a verb from the first conjugation (the most common type of conjugation).
|I worked||am lucrat|
|you worked||ai lucrat|
|he worked||a lucrat|
|she worked||a lucrat|
|we worked||am lucrat|
|you (plural) worked||ați lucrat|
|they worked||au lucrat|