Questions & Answers about Magister numerum in libro videt.
- magister – teacher; nominative singular; the subject (the one doing the seeing).
- numerum – number; accusative singular; the direct object (the thing being seen).
- in libro – in the book; in is a preposition, libro is ablative singular, giving the location.
- videt – sees; 3rd person singular, present tense, indicative, active; the main verb.
So, structurally: subject – object – prepositional phrase – verb.
Latin changes the ending of nouns to show their function in the sentence.
- numerus is nominative singular: typically used for the subject.
- numerum is accusative singular: typically used for the direct object.
In this sentence, the number is being seen (it receives the action), so it must be in the accusative: numerum.
Magister is in the nominative singular.
- The nominative case is used for the of a finite verb.