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"Sí" is a form of "sí", an adverb which is often translated as "yes". "Lo hice" is a phrase which is often translated as "I did it". Learn more about the difference between "sí" and "lo hice" below.
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An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. yes
¿Quieres ir al cine? - Sí, pero primero hay que comer.Do you want to go to the movies? - Yes, but let's eat first.
a.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Yo sí quiero acompañarlos a Disney.I do want to go with you to Disney World.
Ella no aprobó, pero yo sí.She didn't pass, but I did.
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
interjection
a. yes
¿Quieren ir mañana a la playa? -¡Sí!Do you want to go to the beach tomorrow? - Yes!
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. yes
El departamento dio el sí a la propuesta.The department said yes to the proposal.
A pronoun is a word that stands in for a noun (e.g., she).
pronoun
a. himself (third person singular masculine)
Suele jugar ajedrez con sí mismo.He usually plays chess against himself.
b. herself (third person singular feminine)
¡Se envió una carta a sí misma!She sent a letter to herself!
c. itself (third person singular)
El hilo se está enredando en sí.The string is getting tangled up in itself.
d. themselves (third person plural)
Se mienten a sí mismos.They're lying to themselves.
e. yourself (second person singular formal)
Solo desea el bien para sí.You only wish good for yourself.
f. yourselves (second person plural formal)
¡Solo tienen que creer en sí mismos!You just have to believe in yourselves!
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lo hice(
loh
 
ee
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seh
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A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. I did it
No era un examen difícil. Lo hice en menos de una hora.It wasn't a difficult test. I did it in less than an hour.
a. I made it
¿No quieres probar este delicioso plato de pasta? Lo hice yo mismo.Don't you want to try this delicious pasta dish? I made it myself.
a. I did it
Acepté el trabajo solo para que tú pudieras dedicarte por entero a tu novela. Lo hice por ti.I accepted the job just so you could devote yourself entirely to your novel. I did it for you.
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