La diferencia entre “Allí”, “Su” y “Son”

La diferencia entre “Allí”, “Su” y “Son”

“There”, “their” y “they’re” son fáciles de confundir porque suenan idénticos.

Collection of articles discussing the Difference Between similar terms and things, categories range from Nature to Technology.

  • “There” is a place. For example:
    • I live there. ✔️
    • There are lots of shops. ✔️
      (“There” is like “here.”)
  • “Their” is for possession. For example:
    • I understand their argument. ✔️
      (“Their” is just like “my,” “his,” “her,” and “our.”)
  • “They’re” is short for “they are.” For example:
    • Where are the rabbits? They’re near the tree. ✔️

More about “They’re,” “Their,” and “There”

“Allí”, “su” y “son” son palabras comunes, y sus lectores esperarán que use la correcta. Un error relacionado con uno de estos es un grave riesgo para su credibilidad como escritor.


“ellos son” es una contracción de “ellos son”.
Ejemplos de oraciones con “they’re”:

  • They’re not leaving on Saturday now. ✔️
    (Do the expansion test: “They are not leaving on Saturday now.”)
  • I cannot believe they’re from Boston. ✔️
    (Test: “I cannot believe they are from Boston.”)
  • More than 20 people left they’re coats in the cloakroom. ❌
    (Test: “More than 20 people left they are coats in the cloakroom.” This is nonsense. Therefore, “they’re” is wrong.)
  • My doctor gave me two weeks to live. I hope they’re in August. (Comedian Ronnie Shakes) ✔️
    (Test: “I hope they are in August.”)
  • Things are only impossible until they’re not. (Captain Jean-Luc Picard) ✔️
    (Test: “Things are only impossible until they are not.”)

Top Tip

Solo usa “they’re” si puedes sustituirlo por “they are”.

Understand the grammar.
“Son” es una contracción. Hay dos tipos de contracción:

  • A shortened version of a word (e.g., “cannot” contracts to “can’t”)
  • One word formed from two words (e.g., “they are” contracts to “they’re”)

Ambos tipos de contracción cuentan con apóstrofes. En la contracción “they’re”, el apóstrofe reemplaza la letra “a” y las dos palabras se fusionan en una sola).


“Su” es para posesión. Es como “mi”, “tu”, “su”, “ella”, “su” y “nuestro”. Estos se denominan determinantes posesivos (“adjetivos posesivos” en la gramática tradicional).

Top Trick (Use The “Our” Test)

Aquí hay un pequeño truco para probar si “their” es correcto:

Use la palabra “nuestro” en lugar de “su”. Si la oración aún tiene sentido, entonces “their” es correcto. Este truco funciona porque “nuestro” y “su” son determinantes posesivos que se usan para los plurales.

Ejemplos de oraciones con “their”:

  • Can you show the guests to their cabins? ✔️
    (Do the “our” test: “Can you show the guests to our cabins?”
    This sounds okay. Therefore, “their” is correct.)
  • I have seen their footprints before. ✔️
    (Test: “I have seen our footprints before.”
    This sounds okay. Therefore, “their” is correct.)
  • Their all leaving. ❌
    (Test: “Our all leaving.”
    This is nonsense. Therefore, “their” is wrong. It should be “They’re.”)
  • Their less likely to cause offence. ❌
    (Test: “Our less likely to cause offence.”
    This is nonsense. Therefore, “their” is wrong. It should be “They’re.”)
  • Experience is the name every one gives to their mistakes. (Playwright Oscar Wilde) ✔️


“Allí” es como “aquí” porque representa un lugar. (“Allí” y “aquí” son adverbios de lugar).

“Allí” tiene dos usos:

(1) It means a specific place.

  • She is there. ✔️

(2) It means that something exists.

  • There are two apples. ✔️

Más oraciones de ejemplo con “there”:

  • The Germans are over there. ✔️
    (In this example, “there” is a specific place.)
  • There is a good reason I’m not attending the party this year. ✔️
    (In this example, it means “a good reason exists.”)

Ready for All 3?

Aquí hay un ejemplo con “they’re”, “their” y “there”.

  • They’re unqualified, and their opinions were worthless while they were there. ✔️

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