'Do you know that you're really [or truly] very beautiful?' is an English equivalent of 'Sai tu che sei veramente bellissima?'
The verb 'sai' means '[you] are knowing, do know, know'. The subject pronoun 'tu' means '[informal] you'. The interrogative/relative pronoun 'che' means 'that'. The verb 'sei' means '[you] are'. The adverb 'veramente' means 'truly, really'. The feminine superlative 'bellissima' means 'extremely, very beautiful', etc.
All together, they're pronounced 'seye* too keh seh veh-rah-MEHN-teh behl-LEES-see-mah'.
That's what's said to a 'really, truly very beautiful' female. To a 'really, truly very beautiful [or handsome]' male, it's 'bellissimo', which is pronounced 'behl-LEES-see-moh'.
*The sound 'eye' is similar to the sound in the English noun 'eye'.
Ancora non sai! in Italian means "You still don't know!" in English.
"You know!" and "Do you know?" are English equivalents of the Italian word Sai. Context makes clear whether the second person informal singular present indicative serves as a declaration or a question. The pronunciation will be "seye" in Italian.
Lo sai or Sai che are Italian equivalents of the English phrase "You know that."Specifically, the personal pronoun lo means "him, it, that, this." The verb sai means "(informal singular you) are knowing, do know, know." The relative pronoun che means "that."The respective pronunciations are "lo seye"* and "seye keh."*The sound is similar to that in the English noun "eye."
multo gentilli o tu sai gentilli
"Give, you don't know how!" is an English equivalent of the Italian phrase Dare, non sai!Specifically, the present infinitive dare is "to give". The adverb non means "not". The verb sai translates as "(informal singular you) are knowing, do know, know".The pronunciation will be "DAH-rey nohn SEYE"* in Italian.*The sound is similar to that in the English noun "eye".
"But you know the Italian language" is a literal English equivalent of the Italian phrase Ma tu sai la lingua italiana. The pronunciation will be "ma too seye la LEEN-gwa EE-ta-LYA-na" in Italian.
"You're handsome, you know?" is an English equivalent of the Italian phrase Sei bello, sai?Specifically, the verb sei is "(informal singular you) are". The masculine adjective bello means "beautiful, handsome, nice, pretty". The verb sai translates as "(informal singular you) are knowing, do know, know".The pronunciation will be "sey BEHL-loh SEYE*" in Italian.*The sound is similar to that in the English noun "eye".
"You know it" or "You know this" or "You know that" are English equivalents of the Italian phrase Lo sai.Specifically, the personal pronoun lo means "him, it, that, this." The verb sai means "(informal singular you) are knowing, do know, know." The pronunciation is "loh seye."**The sound is similar to that in the English noun "eye."
Sai is an Italian equivalent of the English question "Do you know?"Specifically, the Italian word is a verb. It means "(informal singular you) are knowing, do know, know." The pronunciation is "seye."*The sound is similar to that in the English noun "eye."
"You don't know what... ." is an English equivalent of the incomplete Italian phrase Non sai che cosa... .Specifically, the adverb non is "not." The present indicative verb sai means "(informal singular you) are knowing, do know, know." The phrase che cosa translates literally as "what thing" and loosely as "what."The pronunciation will be "non seye* key** KO-sa" in Italian.*The sound is similar to that in the English noun "eye."**The sound is similar to that in the English exclamation "Hey!"
Sai che non voglio farti del male.
Non sai niente di me is an Italian equivalent of the English phrase "You don't know anything about me." The pronunciation will be "non seye*NYEN-tey dee mey" in Italian.*The sound is similar to that in the English noun "eye."