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"She is my sister" is a phrase which is often translated as "es mi hermana", and "this" is a pronoun which is often translated as "este". Learn more about the difference between "she is my sister" and "this" below.
she is my sister(
shi
ihz
may
sihs
-
tuhr
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. es mi hermana
Let me introduce you to Melanie. She is my sister.Te presento a Melanie. Es mi hermana.
this(
thihs
)A pronoun is a word that stands in for a noun (e.g., she).
d. así
Is this enough for you or would you like a bigger piece?¿Así te llega o quieres un trozo más grande?
An adjective is a word that describes a noun (e.g., the big dog).
a. este (masculine)
This winter has been the coldest one in twenty years.Este invierno ha sido el más frío en veinte años.