QUICK ANSWER
"Sí" is a form of "sí", an adverb which is often translated as "yes". "Lo hago" is a phrase which is often translated as "I do it". Learn more about the difference between "lo hago" and "sí" below.
lo hago(
loh
ah
-
goh
)A phrase is a group of words commonly used together (e.g., once upon a time).
b. I'm doing it
Enhebrar una aguja es delicado. No me mires mientras lo hago porque me pongo nervioso.Threading a needle is tricky. Don't look at me while I'm doing it because I get nervous.
c. I'll do it
Lava los platos, Juan. - No, espera. Yo lo hago.Wash the dishes, Juan. - No, wait. I'll do it.
a. I make it
¿Te gusta el sushi? Yo lo hago muy a menudo en casa.Do you like sushi? I make it very often at home.
b. I'm making it
Me encanta el olor del pan mientras lo hago.I love the smell of bread while I'm making it.
c. I'll make it
¿Qué te apetece de almuerzo? Yo lo hago.What would you like for lunch? I'll make it.
a. I do it
No me gusta correr, pero lo hago para mantenerme en forma.I don't like to run, but I do it to stay in shape.
b. I'm doing it
No hace falta que me recuerdes que debo estudiar. Ya lo hago.There's no need for you to remind me I should study. I'm already doing it.
c. I'll do it
Si tú no puedes limpiar el desván por lo de tu alergia, yo lo hago.If you can't clean the attic because of your allergy, I'll do it.
sí(
see
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
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.
2. (emphatic)
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word 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!).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
A pronoun is a word that stands in for a noun (e.g., she).
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.
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!
