vs 

QUICK ANSWER
"Too" is an adverb which is often translated as "también", and "so do I" is a phrase which is often translated as "yo también". Learn more about the difference between "too" and "so do I" below.
too(
tu
)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. también
He can play the guitar and the piano too.Sabe tocar la guitarra y el piano también.
a. demasiado
If you add too much sugar, the cake won't taste good.Si añades demasiado azúcar, el pastel no sabrá bien.
Copyright © 2025 Dictionary Media Group, Inc.
so do I(
so
 
du
 
ay
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. yo también
I love red lipstick. - So do I.Me encantan los pintalabios rojos. - Yo también.
Copyright © 2025 Dictionary Media Group, Inc.