vs
QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Lo hago" is a phrase which is often translated as "I do it". Learn more about the difference between "si" and "lo hago" below.
si(
see
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
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.