Questions & Answers about Ex monte ad vallem aqua currit.
Because ex takes the ablative case, and the ablative singular of mons (mountain) is monte.
So:
- mons = mountain as a dictionary form / nominative
- monte = from the mountain after ex
This is a very common Latin pattern: a preposition often tells you what case the following noun must be in.
Because ad takes the accusative case, and the accusative singular of vallis (valley) is vallem.
So:
- vallis = dictionary form / nominative
- vallem = to/toward the valley after ad
In this sentence, ad vallem shows motion toward a place.
In this sentence:
- ex
- ablative = out of / from
- ad
- accusative = to / toward