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"Sea" is a form of "sea", a phrase which is often translated as "be". "Pienso que" is a phrase which is often translated as "I think that". Learn more about the difference between "sea" and "pienso que" below.
sea
A phrase is a group of words commonly used together (e.g., once upon a time).
1. (formal) (imperative; second person singular)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
3. (formal) (subjunctive; second person singular)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
a. to be
Es importante que sea amable con sus vecinos.It's important for you to be kind to your neighbors.
a. to be
Ana María le pidió a su hermana que sea su dama de honor en la boda.Ana Maria asked her sister to be her bridesmaid in her wedding.
pienso que(
pyehn
-
soh
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. I think that
Pienso que todos deberíamos usar más el transporte público y menos nuestros automóviles.I think that we should all use public transport more and our cars less.
b. I think
¿Qué opinas de lo que dice Carlos? - Pienso que es un mentiroso.What do you think about what Carlos said? - I think he's a liar.