 The purpose of the nominative case is the subject of the sentence  The nominative 1 st declension endings are –a and –ae

 The genitive case is used to show possession of another noun in the sentence.  The noun being possessed is in the dative case  The genitive 1 st declension endings are – ae and -arum

 The dative case is the indirect object of the sentence.  In English, it is usually translated with a to or by.  In the following sentence “the dog” is the indirect object: I threw the Frisbee to the dog.  The dative 1 st declension endings are –ae and -is

 The accusative case is used as the direct object of a sentence. In English, the direct object is the noun in which the action is being done to.  In the following sentence, “the Frisbee” is the direct object: I caught the Frisbee.  The accusative 1 st declension endings are –am and –as

 The ablative case is used to tell the means by which something is done.  Ablatives are usually translated with a with or by means of.  The ablative also has many forms for different ways to use it but we’ll get into that in a later slideshow.  The ablative 1 st declension endings are -ā and –is