active & passive
The USA builds boeing planes. (> bildet den Passiv)
Boeing planes are built by the USA
How is the verb formed in the Simple Present Passive?
Form von 'to be' + Past Participle
Columbus discovered the Americas. (> bildet den Passiv)
The Americas were discovered by Columbus.
How is the verb formed in the Simple Past Passive?
was/were + Past Participle
This day .... Columbus Day in the USA.
is called
The letters ... by her.
were delivered