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QUICK ANSWER
"Hi" is a form of "hi", an interjection which is often translated as "hola". "Do I know you?" is a phrase which is often translated as "¿Te conozco?". Learn more about the difference between "hi" and "Do I know you?" below.
hi(
hay
)An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
1. (colloquial) (salutation)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
Do I know you?(
du
ay
no
yu
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. ¿Te conozco? (informal) (singular)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
Do I know you? Where do you go to school?¿Te conozco? ¿A qué universidad vas?
b. ¿Lo conozco? (formal) (singular, masculine)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
You look very familiar. Do I know you?Me parece muy familiar. ¿Lo conozco?
c. ¿La conozco? (formal) (singular, feminine)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
Excuse me, ma'am. Do I know you?Disculpe, señora. ¿La conozco?
