most important and useful sentece in all languages

[Lazy8]

Here it is again, with the actual tones (which the numbers were meant to substitute for):

wŏ bú huì shuō hànyŭ

(And correction on the tone on the second word; I always get that one mixed up.)

[Krisse Kovacs]

Here it is again, with the actual tones (which the numbers were meant to substitute for):

wŏ bú huì shuō hànyŭ

(And correction on the tone on the second word; I always get that one mixed up.)

I add this!

For Welsh it is
:wales: Dwi'm yn Siarad Cymraeg
(pronounced) Du eem un-sharad cymraig

For Japanese
:japan: 日本語を話しません
(pronounced) Nihongo wo hanashimasen

and added these two too, thanks!

[heiteru]

Oh, I just noticed a typo in Icelandic.
íslensku instead islandsku.
The pronunciation will sound roughly like "IEh tala ehki islensku"
(I wrote IE because "ég" pronounced not just like "eh," it sounds more like a quick pronunciation of "i" and "e" (e-acute, u know?))

[Krisse Kovacs]

Oh, I just noticed a typo in Icelandic.
íslensku instead islandsku.
The pronunciation will sound roughly like "IEh tala ehki islensku"
(I wrote IE because "ég" pronounced not just like "eh," it sounds more like a quick pronunciation of "i" and "e" (e-acute, u know?))

I wrote with an í first, but I was unsure if it was with a dot or not on top becuasemyhandwritesucks, thanks for correcting it!
andthedwasatypoIswear... you know, typing island.... then the rest...

[heiteru]

I wrote with an í first, but I was unsure if it was with a dot or not on top becuasemyhandwritesucks, thanks for correcting it!
andthedwasatypoIswear... you know, typing island.... then the rest...

Yes, I remember that at first everything was written correctly, but here I am! 
and yah I know. once it was difficult for me to distinguish between "Iceland" and "island". and Iceland IS an island. Jesus, it's hard.

[Krisse Kovacs]

Yes, I remember that at first everything was written correctly, but here I am! 
and yah I know. once it was difficult for me to distinguish between "Iceland" and "island". and Iceland IS an island. Jesus, it's hard.

but by island I meant iceland in other languages (like swedish) lol I just remembered it was a english word too xD

[viola]

This is an awesome idea! When I get home tonight I will see if I can get some of those missing flags uploaded

[Scots]

:brazil & :portugal : Eu não falo português. I noticed that no one had posted that yet. Português precisa ser ver mais frequentemente!

[Auxivele]

Korean: 한국말 못 해요. (Hangukmal mot haeyo.)

[wavewright62]

Hijacking the thread slightly, my husband once knew a young woman who collected the sentence "you are very beautiful" in every language.
Before you picture her as vain, remember that she wanted to say it to *everyone else.*

[Lenny]

Afrikaans: Ek praat nie Afrikaans nie.

...I know we have a South African flag, but it'd be weird using that. The country has 11 official languages and many more unofficial ones.

[cati]

Faroese -
:faroe: Eg dugi ikki føroyskt.

(not pronounced exactly as it might look, for one 'gi' in dugi is like 'wi' in window)

[wavewright62]

This one is prompted by fija's sig:
"special talents include knowing how to say „i like spaghetti because i am spaghetti” in 17 languages."
fija, it's time to lay it here!

I can contribute (assuming it's not one of your 17) Estonian :estonia:
Minul meeldib spageti sellepärast mina olen spageti.
(GT spins it a little differently, they may or may not be correct?)

Go!

[fija]

I can contribute (assuming it's not one of your 17) Estonian :estonia:
Minul meeldib spageti sellepärast mina olen spageti.

Omg it was not on my list (until now), thanks a lot for the contribution!

Language count so far: 18

‎Arabic: .أنا أحب السباغيتي لآنني أنا سباغيتي

Bulgarian: обичам спагети, защото аз съм спагети.

:denmark: jeg kan lide spaghetti for jeg er spaghetti.

:netherlands: ik hou van spaghetti omdat ik spaghetti ben.

:estonia: minul meeldib spageti sellepärast mina olen spageti.

:finland: tykkään spagetista koska olen spagetti.
 
:france: j’aime les spaghettis parce que je suis spaghetti.

:germany: ich mag Spaghetti, weil ich Spaghetti bin.

:japan: 私はスパゲッティですからスパゲッティが好きです。

:latvia: man patīk spagetti, jo es esmu spagetti.

:china: (Mandarin) 我喜欢面条，我是面条.

:norway: jeg liker spaghetti fordi jeg er spaghetti.

:poland: lubię spaghetti, bo jestem spaghetti.

:portugal: eu gosto de esparguete porque eu sou esparguete.

:romania: îmi plac spaghetele pentru că eu sunt spaghete.

:russia: я люблю спагетти потому что я спагетти.

:spain: me gusta spaghetti porque soy spaghetti.

:sweden: jag älskar spagetti för att jag är spagetti.

If anyone would like to add to the list, I will highly appreciate it some of these were taught by native speakers, some by learners, some formed by me, so if you spot a mistake, corrections are more than welcome too

[GeiYin]

:russia: я люблю спагетти потому что я спагетти.


If anyone would like to add to the list, I will highly appreciate it some of these were taught by native speakers, some by learners, some formed by me, so if you spot a mistake, corrections are more than welcome too

:russia: я люблю спагетти, потому что я спагетти.

Sometimes , is very important in russian grammar! Luckily it's not the case where it's position can completely change the meaning Beware of , in russian!