"Good night, mom."
Translation:Спокойной ночи, мама.
I agree... Duolingo does a terrible job explaining differences like these... they just throw them at you. Gives me the impression of a course made by robots using Google Translate (I know this isnt the case but the lack of more in depth explanations gives this general feeling in my opinion).
There is no difference in meaning. I am a born Russian, and this Duolingo-implied difference in meaning is ❤❤❤❤❤❤❤❤. They mark доброе утро (добрый день, вечер) and et cetera as valid translations to good morning (afternoon/day and evening). Sometimes, they even mark good night as доброй ночи. But not this time. Why? It's a bug, I guess, or they missed it.
Don't worry - there is literally no difference at all between using доброй or спокойной ночи. They both mean that you are wishing another person to have a kind, or a quiet, peaceful night. And both are mostly just idiom noise by now because no one actually pays attention to what is being wished in particular, or why we have to say it before night. We just do. It's polite, and bears almost no meaning on its own. That's all.
But remember that спокойной (спокойного) can't be used with anything else but "night". Using that qualifier for "day" or "evening" or even "morning" is not a thing, and would likely sound stupid.
Although, when you are making a joke between two friends (or close family members) you might use спокойного дня (спокойного вечера, спокойного утра) when the person wants to take an uncharacteristic nap during the day (evening or morning, respectively). Simply by association with the "good night" idiom. It won't be correct, but people sometimes use it as a joke.
I took courses with deep explanation. Every lesson explained it all. All you had to do was memorize the vocabulary, the 7 different cases each of which had different endings for masculine ,feminine or neutral nouns, plus animate. And each of those were different depending on what letters the noun ended with, and if course many were irregular. And then each one was either singular or plural . And some had several different cases depending on if was preceded by a verb of motion or certain numbers, pronouns or adjectives. There was a grammatical chart so each word could change in the beginning, middle or end as much as 30 or more ways. If course, many were exceptions. Then the other parts of speech, pronouns, verbs, adjectives, and even numbers did the same, each eith charts. All clearly explained. I think I gave up completely by lesson 7. I had some Russian friends but they didnt know the grammar either in spite of 10 years of it mandatory in schools. So you should thank God for Duo, because you learn like kids do, by repitition, hearing it,seeing it and believe it or not, its presented to make grammatical sense. Its fun, frustrating and free. And the explanations here on the forum are excellent.
The courses weren't offered by Duolingo, as I understand. What JanetGidle means is that grammar in Russian is very heavy and complicated, so it would feel hopeless if it was just thrown in your head from the beginning. You will first learn sentences, idioms, to get familiar with the language. They you will begin to recognize patterns. And then it the grammar, the charts will make sense. Look at the "Tips" at each lesson for that (sometimes not available on mobile version though, check the web version).
Спокойной ночи is correct. It means = have a quiet night. Спокойные ночи = the nights are quiet.
See the difference? One is singular, another plural. Ночь is a feminine word, singular, meaning "night", used in Nominative or Accusative Cases. When it is used in Instrumental Case, it becomes "ночью". When you use this word in Genitive, Dative, or Prepositional Cases, it becomes "ночи" and thus all of its adjectives (спокойная, in this specific example) have to shift accordingly.
You are being confused by the adjective, I understand. But check out the usage of спокойной. It is never used with anything but the feminine singular in Accusative, Genitive, Prepositional, Instrumental or Dative Cases. Which this sentence exactly happens to be.
So Nominative Case = спокойная ночь. (A quiet night) . Accusative Case = Cпокойной ночи. ((Have) a quiet night).
I erred in my earlier comment; it was two months ago and I know more now. Here, спокойной ночи is in the dative case, which is used for indirect objects. (The genitive declension for this phrase is the same.) You are wishing someone a good night. (Я желаю тебе) спокойной ночи = I wish you a calm night. The accusative case is used for direct objects. For example, Я люблю спокойную ночь. I love a calm night.
Oops. I deleted my post because the other two posters were correct and I was not. I did not realize this would also delete theirs because they had replied to mine. So I will just reiterate what they said. The final syllable is unstressed, so it is pronounced as a reduced ой, still a dipthong. (The difference between stressed ой and unstressed ой is exactly the same as the difference between stressed о and unstressed о.) Said quickly, it can sound like an i to a someone still getting used to Russian pronunciation (like me).
https://www.duolingo.com/profile/JanetGidle JanetGidle has commented as "I'm not a native speaker, still learning. I have always heard it pronounced that way. My guess is, since it's ой, not oи, it's like мой, in that both letters are pronounced separately. Also in the stressed part of the word the o part is an aw sound because of the stress. The end ой is Unstressed so the o sounds more like ah. Stressed spakOIN Unstressed at end - more like aye. Hope this helps. An easier or better explanation by a native speaker would be great!"
https://www.duolingo.com/profile/DVOEII DVOEII has commented as "Если вы слышите тот же sound line что и я, где говорит мужчина, то произносит он достаточно нативно. В конце слова "спокойной" нет звучит "ы", там редуцированный звук "о". P.S. I think JanetGidle proposed very realistic explaination."
why does it keep saying i'm wrong when i spell it as "spokoynoy nochi, mama." ? isn't that how it is spelled? when i googled it to make sure, it said i was correct. i don't know any other way to spell it without the russian alphabet, and i know the alphabet i am using right now isn't the problem, because i've answered questions like this before the same way and have gotten them right.
It depends on keyboard.
If you are using PC with Windows OS, I recommend you to add Russian keyboard from the settings and use Touch keyboard (A keyboard that shows on screen and can be typed with a mouse). In that case it's at the most left upper corner.
If you are using an Android Smartphone with default keyboard settings, it's in the most upper left corner as well. If you still can't find it, try press longer, or holding on the и for a second, you should see it.
You can install new keyboards on you laptop for free. Just go to "Settings", then "time and language" (this might be different, depending on your laptop). You'll have to buy keyboard stickers if you don't know where each letter is, or you can just print out a keyboard layout.