Latin Nouns
In the Latin language each noun has TEN different forms.  Five of these forms are singular, five are plural. Each form has a different use in the sentence.  By identifying the case and number of a noun, you will be able to figure out how to translate that noun into English.
Noun Cases and their Uses
Nominative    - Subject and Complement

Genitive         - "of the __________"

Dative            - "to/for the __________"

Accusative    - Direct Object
                      - Duration of Time
                      - Object of the prepositions ad, per, prope,                          trans, in (into),

Ablative        - Place Where
                      - Accompaniment
                      - Place From Which
                      - Time When
                      - Means
                      - Object of the prepositions e, ex, sub, a,                               ab, in (in),
Nouns with similar endings are grouped together into declensions. 
Declensions and Noun Endings
         1st       2nd M   2nd N   3rd M/F    3rd N
Nom.  -a         -us        -um      blank        blank
Gen.   -ae       -i           -i            -is             -is
Dat.    -ae       -o          -o           -i              -i
Acc.   -am      -um       -um        -em         blank
Abl.    -?         -o          -o           -e             -e

Nom.  -ae        -i          -a           -es           -a
Gen.   -arum   -orum   -orum     -um         -um
Dat.    -is         -is        -is           -ibus        -ibus
Acc.   -as        -os        -a           -es           -a
Abl.    -is         -is        -is          -ibus        -ibus
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