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"That" is a conjunction which is often translated as "que", and "these" is an adjective which is often translated as "estos". Learn more about the difference between "that" and "these" below.
that(
thaht
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A pronoun is a word that stands in for a noun (e.g., she).
An adjective is a word that describes a noun (e.g., the big dog).
these(
thiz
)An adjective is a word that describes a noun (e.g., the big dog).
a. estos (masculine)
These toys aren't going to put themselves away.Estos juguetes no se van a guardar ellos solos.
b. estas (feminine)
I want these compositions finished by ten.Quiero que estas redacciones estén acabadas para las diez.
A pronoun is a word that stands in for a noun (e.g., she).
a. estos (masculine)
Which cars do you mean? - These over here.¿A qué coches se refiere? - A estos de aquí.