Question

present perfect tense
for positive sentences
sub/pronoun + auxiliary (have/has) + past participle verb (regular/irregular) + complement
i have / ive
you have / youve
she has / shes built a robot.
he has / hes
it has / its
we have / weve developed a video game.
you have / youve
they have / theyve

1. remember to use the regular and irregular participle verbs properly, you have practiced them in the previous progression 3 or you can check them at the end of the book.
2. in the present perfect tense “when” is not important, because we focus on completed actions in the past, but you can use other expressions with positive sentences:

already – recently – just
*these words come after have/has.
santiago has just won the first place in the national prototype contest.
lately
*the word “lately” goes at the end of the sentence.
the weather has been crazy lately.

Explanation:

El tema trata sobre el uso del Present Perfect Tense en oraciones afirmativas, incluyendo la estructura (sujeto + auxiliar have/has + verbo en participio + complemento) y expresiones como already, recently, just, lately. Se enfoca en gramática y uso de lenguaje, lo que corresponde a la subdisciplina de Linguistics (Lingüística) dentro de Arts, ya que aborda aspectos de la estructura y uso del idioma.

Answer:

La subdisciplina que mejor aplica es Linguistics (dentro de Arts), ya que el contenido explica la estructura y uso del Present Perfect Tense en inglés, lo que es un tema de lingüística (estudio del lenguaje, su gramática y uso).