ok, it's time for me to five you some grammar. Here I go:
  Latin knows 5 different tpyes of substantiva. The nominativus, the accusativus, the genitivus, the dativus and the ablativus. Then there are 2 different subtypes, plural and singular. Then we have 3 different subsubtypes: neuter, masculine and feminine.
  Here, we have a list of the things I just explained.
 
 -----------|        S       |          P           | -----------| M  |  F  |  N  |  M   |   F   |   N   |                 Nominativus|avUS|rosA |donUM|avI   |rosAE  |donA   | Accusativus|avUM|rosAM|donUM|avOS  |rosAS  |donA   | Genitivus--|avI |rosAE|donI |avORUM|rosARUM|donORUM| Dativus----|avO |rosAE|donO |avIS  |rosIS  |donIS  | Ablativus--|avO |rosA |donO |avIS  |rosIS  |donIS  | 
  What can clearly be seen is that substantivos are devided into three catogories: M, F and N. These cannot be changed. What can be changed are the number and the <things, dont know the word :S>. Substantivi are always shown in the nominativus, unless placed in a sentance.
  The next part of a basic sentance (and I mean very basic).
  The verbs, present simple I believe (you're gonna have to correct me at those times, HH.)
  [list]laborare is the verb, it means: to work laboram = I work laboras = you work laborat = he/she/it works laboramus=we work laboratis = you work laborant = they work[/list:u]
  Now translate this sentance:
  avus laborat. (avus means grandfather)
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