Latin 101

Chapter 15

duo, duärum, duo

The number "two" is inherently plural, so its declension only has plural forms. The declension is irregular, however, especially in the NPM and NPF and in the dative and ablative

duo duae duo
duörum duärum duörum
duöbus duäbus duöbus
duös duäs duo
duöbus duäbus duöbus

The trick with this paradigm is to remember the NPM and NPN have the form "duo" and that the vowel that marks the gender (ö for masc and neut; long a for fem) persists in the dative and ablative (i.e., you don't get the 'ibus' endings you would expect).

Chapter 15 index/ Drill 1/ trës