Need help with "is believed to be"

[peroxwhygen]

Good evening, I was hoping to get some help with the following sentence:

"The president is believed to be in good health"

Does anyone know what kind of grammar this is or what tense it relates to?
What does the structure look like, is it subject+verb+infinitive?

Any help would be greatly appreciated.

Many thanks

Sean

[Lucy]

Hi Sean,

this is the passive voice.

The people believe the President to be in good health. Active

The President is believed to be in good health. Passive

Lucy