The affirmative usted, generally, takes the Yo- indicative form of a verb, and uses the opposite ending of what would be normal for that verb. (for er/ir verbs, the usted command will end in "a", for ar verbs, the usted command will end in "e"). This form is very similar, and usually identical, to the present subjunctive.
Our verb is comer:
Since Comer is a regular verb, the yo form is like any indicative form, "com"
We add the opposite of the typical ending, which means we use "a"
Affirmative Usted Command:
Coma
Example:
"Coma esa mansana, para que no tenga que ir al doctor"
I love playing the piano. that is why they fascinate me
Answer:
Lukas y Katharina son de Alemania. Ellos son Alemanes.
Me llamo Francisco y soy de México. Yo soy Mexicano.
Marie-Claire es de Francia. Ella es Francesa.
Belem es de Portugal. Ella es Portugués.
Tú (masculino) eres de Puerto Rico. Eres Puerto Riqueño.
Yo (masculino) soy de Bolivia. Soy Boliviano.
OA. nadar it is right cause it means swimming