There's a subtle difference. Adding «есть» will emphasise the existence of plans, while dropping it shifts emphasis to the word 'plans' itself. I believe both work here. In some other contexts, «есть» is neccessary.
So, do you think that I have to put always "есть" ? Or try to avoid it?
Hm, that's a difficult question. Sometimes sentences with «есть» sound better, sometimes sentences without it.
I would suggest this: if you just have a noun without an adjective or other modifiers, then donʼt drop «есть»:
- В ко́мнате есть стол. (There's a table in the room.) — the most important piece of information is that there's a table in your room
- У меня́ есть ноутбу́к. (I have a laptop) — the most important piece of information is the existence of a laptop
But if you have an adjective, a numeral, or other modifiers, then drop «есть»:
- В мое́й ко́мнате но́вый стол. (There's a new table in my room) - the most important piece of information is that the table is new
- У меня́ ноутбу́к с Linuxʼом. (I have a Linux laptop) — the most important piece is that there's Linux on your laptop
- У Ма́ши две подру́ги. (Masha has two [female] friends) — the most important fact is the number 2
This is not a rule (because the sentence «У меня планы» would never be produced if you followed my suggestions), but you can use this as a shortcut until you understand the pattern better.
How would one say, "We have the plans", as opposed to just, "We have plans" (as translated here)?
the same exact way. the sentence has to different meanings but is said the same way
never mind, that was incorrect of me, sorry I'm kinda new to this and i just tested it
So "у" in this sentence and in others what does it mean? What is it used for?
«У» is a preposition, here it means something like ‘at the possession of’. (Its original meaning is ‘near’.)
So, basically, the sentence structure is ‘at_the_possession_of us, [there are] plans’.
What is the translation of "Our plans" to Russian? Is the translation ambiguous because both the genitive (possessive) "нас" and the accusative "нас" could be used here?
'Our plans' is «на́ши пла́ны».
Excellent, thank you. How would you possess-ify a plural, such as "Our plans' contents"?
You would use genitive for both 'our' and 'plans', i.e. «содержа́ние на́ших пла́нов».
Why does 'наши' become the plural possessive 'наших'? Is it because it must match the number and case of 'plans'?
Yes, «наш» 'our' behaves like adjective and matches the modified word in case, number and gender. The same is true about мой 'my', твой 'your' (informal singular), ваш 'your' (polite or plural).
Его, её and их, however, work differently.
Sorry, I don't understand your question. Can you please elaborate?
«У» is a preposition:
- When it's used with genitive form of a noun, it indicates possessor: «у нас» 'at our possession/at our place', «у мене» 'at my possession/place', «у сестри» 'at sister's possession/place', «у Китая» 'at China's possession', «у Гонконгу» 'in Honkong's possession'.
- When it's used with locative form of the noun, it indicates location: «у Китаї» 'in China', «у Гонконзі» 'in Hong Kong'.
- When it is used with accusative form of the noun, it indicates direction: «у Китай» 'to China', «у Гонконг» 'to Hong Kong'.
«У» also has a variant «в», preferred near vowels.
«І» is a conjunction, 'and'. It has a variant «й», which can be used near vowels.
sorry i've fixed the question and wow really helpful, the explanation tottally makes sense
«У нас уже́ пла́ны» or «У нас уже́ есть пла́ны».