there's one cool language feature that English doesn't have and it's really annoying - a way to answer questions posed in the negative.

if someone asks something like "don't you want to come with me?", whether you answer "yes" or "no", it's going to confuse them. you normally have to repeat the sentence, "yes, I want to come with you" or "no, I don't want to come with you".

in my native language (Assyrian), you can say "dach" which would mean the "yes, I want to come with you". I think in German they say "doch", in Norwegian it's "jo"?

I like the distinction between the two "to be" forms in Spanish (ser/estar) and how it modifies the meaning of the verb. Eg. ser listo != estar listo.

It's also nice seeing languages with a mostly free word order, that rely on grammar instead, like Greek, even though that probably makes them harder to learn.

I’m an absolute beginner, but Finnish is interesting for two reasons.

First, noun cases. it is like conjugation of verbs in the Romance languages, but applied to nouns too. So there are no prepositions, you just modify the word endings instead. E.g. house is talo and in the house is talossa.

Second, vowel harmony. There are three vowel groups separated by mouth placement. Back vowels are a/o/u, middle vowels are i/e, front vowels are ä/ö/y. I’m not clear on the complete rules but simple words must have harmony, meaning the front and back vowels can’t be mixed together, and middle vowels are neutral and can go either way. From the earlier example, the vowels in talo are in the back of the mouth, but for sisäänkäynti (entrance) they are all front/middle. I’ve heard Japanese is similar.

I like how Chinese has a pronoun for we/us including the person you're speaking to (咱们 zanmen/zamen) in addition to the plural pronoun 我们 women that could be either.

I still find it funny that the Swedish word for vegetable is “grönsak”, which literally translates to “green thing”.

Spanish conjugation is complex enough that conditionality is baked into the verbs. "We would go if..." = "Nosotros iríamos si..."

I've always dug how Latin has not only verb conjugations but also noun declensions. It makes everything sound super cool and poetic. That's why people always liked it for so long. It just sounds cool.

I like that the Spanish grammar is really close to the real uses or the language. The same with English..In Portuguese we have a language we learn from the grammar and almost another we actually use in out daily lives. In Brazil we learn a lot of verb conjugations that we don't use without sounding too formal or pedantic. We also learn conjugations with pronouns like "tu" and "vós" that are not used in Brazil.