As
you have noticed, the Green Level is focused entirely
on the passive voice. Normally the passive voice is constructed
with the verb "be" or "get" and then the past participle.
However, there are other similar verb constructions you should
know about.
have + the past participle
I have my oil changed once every three
months.
or
get + the past participle
I get my oil changed once every three
months.
Both
sentences have the same meaning. What makes them different
from the passive voice is the word order:
S + V + DO + V
Generally, when you use
this word order, it sounds like you had some kind of work
done for you. You paid someone or got someone to do something
and you didn't do anything.