Breakdown of Я нечаянно испачкал вам пальто, простите меня.
я
I
вы
you (plural or formal)
пальто
coat
простить
to forgive
Questions & Answers about Я нечаянно испачкал вам пальто, простите меня.
Why use the Dative вам instead of the possessive ваше (your) before пальто?
This is the Dative of detriment. When an action negatively affects someone or happens to something on their person (like their clothes or body parts), Russian prefers using the Dative case for the person (вам) rather than a possessive pronoun (ваше). It emphasizes the inconvenience caused directly to the person.
Is it grammatically wrong to say Я нечаянно испачкал ваше пальто?
No, it is grammatically correct, but it changes the nuance. Using ваше пальто sounds a bit more detached, as if you stained their coat while it was hanging in a closet. Using the Dative вам strongly implies they were wearing it at the time, making the accident a direct and immediate inconvenience to them.
How can I tell what case пальто is in since the word never changes form?
You have to look at its grammatical role in the sentence. Here, it is the direct object of the verb испачкал (stained), so it is in the Accusative case. Because пальто is a borrowed foreign word, it is indeclinable and its ending never changes, regardless of the case it is in.
I have learned случайно for 'accidentally'. Why use нечаянно here?
While both mean 'accidentally', нечаянно specifically refers to unintentional, clumsy mistakes where you did not mean to cause harm (like spilling coffee, staining clothes, or stepping on a foot). случайно is broader and often means 'by chance' or 'coincidentally', like randomly bumping into a friend at the store.