Hello ))

My native languages: portuguese and spanish ( my great-grandparents was Frenchs and Spaniards)

Studied: 14 years English- British, 3 years French, I also study a little of German because is where I live right now, I'm learning now Russian and Ukrainian I will learn 1st Russian and after Ukrainian because they are a little similar...I want learn more language but for now I'm busy improve my skills in languages I know.

Cantonese

Mandarin

English

Chinese dialect

A bit Korean

A bit Japenese

Just started learning Russian, sounds like a cool language. 

And Sarah is right, its really depends. For me I don't really care how much language should I learn or need to because I just enjoy learning new language.

my native language is arabic and i can speak english, french and a bit of amazigh and korean 

i'm trying to learn korean then i'll learn chinese

Chinese - native

English - learned at middle school

Japanese - beginner 

What is "to know" :-)

Okay my native language is Dutch, I am fluent in English, but I lack some vocabulary. I once did some test and I know about 17,000 words and a native speaker about 30,000. I am pretty good in German too, but I make some mistakes in gramatical cases when I speak fast. I can speak Spanish reasonably. I was married to a Spanish speaking girl for ten years and we spoke Spanish at home. But I divorced her ten years ago, so I have forgotten it a little. Apart from that I can make myself more or less understandable in French, and I can order a beer and talk about small things in Korean. But mostly I do not count the latter two, since my knowledge of those two languages is just too small to be able to say I really "speak" them.

In many careers though, especially technical careers, one language is more than enough.