"Ellos ofrecen un buen servicio a la comunidad"
present simple - They offer the community a good service.
The community is offered a good service by them.
A good service is offered to the community by them.
"Ellos están ofreciendo un buen servicio a la comunidad"
present continuous- They are offering the community a good service.
The community is being offered a good service by them.
A good service is being offered to the community by them.
"Ellos ofrecerán un buen servicio a la comunidad"
futuro simple - They will offer the community a good service.
The community will be offered a good service by them.
A good service will be offered to the community by them.
"Ellos ofrecieron/ofrecían un buen servicio a la comunidad"
past simple - They offered the community a good service.
The community was offered a good service by them.
A good service was offered to the community by them.
"Ellos han ofrecido un buen servicio a la comunidad"
present perfect- They have offered the community a good service.
The community has been offered a good service by them.
A good service has been offered to the community by them.