"I know you!"

Translation: 我认识你！

[Rodolfho7]

Can i say "我知道你"? Which one is more used?

[Keith_APP]

These words are used differently. You cannot use 知道 here.

知道 is to know a piece of fact (not necessarily a simple one)

认识 is to know about sb/sth from several aspects, or to a certain depth.

他认识考古学。
He knows about archaeology.

他知道埃及人如何建造金字塔。
He knows how Egyptians built pyramids.

认识 also means to learn but 知道 doesn't.

我们来认识埃及人如何建造金字塔。
Let's learn how Egyptians built pyramids.

[Handrisuselo]

It is also like Conocer VS Saber in Spanish.

[ElderFinch2]

Like kennen and wissen in German

[EdVilla10]

知道 means "to know, to be aware of." So it can't be used in this case.

认识 may also mean "to know, understand, etc." But it also means "to meet (person)." So it should be used in this case.

[Lomochibi]

知道 refers more to 'information based' knowledge, like knowing a phone number or a fact etc.

[maxkoryukov]

I am a bit confused. Google Translate marks and reads 识 in 4-tone, but on all Duolingo cards, it is marked as 2d tone.. Maybe I am wrong, but please, tell me, which tone is required here.

[maxkoryukov]

Also, I found an answer.

Both 4th and 2d tones are used for this, here is an explanation [it is russian]: http://www.zhonga.ru/chinese-russian/%E8%AF%86/a7h1b

[KaityCastl]

Don't use Google Translate.

[DannyMonte916378]

I don't trust Google Translate because it really is not acurate. Maybe try asking native Chinese speakers around you.

[Ira334181]

Huh. Never learned this phrase or word for the progress quiz...do the progress quizzes give questions you havent learned?