Los hermanos compiten al fútbol hoy de las trece (13:00) a las quince horas (15:00). Ellos compiten 2 horas
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•Alguno/a(s) and Ninguno/a change to match the noun it is describing in gender and number.
<em>Some pencils- </em><em><u>Algunos</u></em><em> lápices , No one girl- </em><em>Ninguna</em><em> chica</em>
•Algún and alguno are both equivalent forms of "some/any."
•When the masc/singular noun is present, use the short version algún.
<em>I need any book. Necesito </em><em>algún</em><em> libro.</em>
○Only use alguno when the masc/singular noun is implied but not in the expression.
<em>¿Tienes dinero? Necesito </em><em>alguno</em><em> ("some"-about dinero)</em>
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•Same rules apply for "none/not any" - ningún versus ninguno.
○If one of the negative words above appears AFTER the conjugated verb in the sentence, you MUST put the word "NO" before the verb.
○A double negative is negative in Spanish when "no" comes before the verb.
Indefinite words that come after "No + verb" MUST BE negatives
I don't want any homework. NO, no quiero ninguna tarea.
○When someone/anyone or no one is the indefinite word, you must put the preposition "a" before "alguien/nadie"
Do you know anyone from Spain? ¿Conoces a alguien de España?