Breakdown of Мы оставляем мокрый зонт в шкафчике и не берём его с собой.
и
and
не
not
мы
we
в
in / to (direction)
Questions & Answers about Мы оставляем мокрый зонт в шкафчике и не берём его с собой.
Why does the sentence use с собой instead of с нами for 'with us'?
Собой is the Instrumental case of the reflexive pronoun себя, which means 'oneself'. In Russian, when the pronoun refers back to the subject of the sentence (in this case, мы or 'we'), you must use the reflexive pronoun. So, instead of saying 'we take with us', Russians say 'we take with ourselves' (мы берём с собой).
Мокрый зонт is the object being left, so why doesn't it change its ending for the Accusative case?
It actually is in the Accusative case! Because зонт (umbrella) is an inanimate masculine noun, its Accusative form is exactly the same as its Nominative (dictionary) form. The adjective мокрый (wet) follows the same rule.
Why does в шкафчике end in -е?
The preposition в takes the Prepositional case here because it describes a location (answering the question 'where?'). Шкафчик (locker or small closet) is a regular masculine noun, so it takes the standard Prepositional ending -е.
The verb is брать (to take). Why does the form берём have an 'е' in it?
Брать has an irregular present tense conjugation. The stem changes from бра- to бер-. This gives us forms like я беру (I take), ты берёшь (you take), and мы берём (we take).