The verb ser is conjugated accordingly:
yo: soy
tu: eres
el/ella/usted: es
nosotros: somos
vosotros: sois
ellos/ellas/ustedes: son
Two circumstances are when describing your job/occupation and describing anything in general.
Answer:
a speaker uses PowerPoint to enhance the impact of his presentation.
After the birth of their son, Atalanta and her husband were transformed into lions, because it was believed that they either insulted Zeus or Aphrodite.