Need help wth "he 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

[Alan]

It is a present indicative passive verb phrase consisting of a predicator (is believed) and a subject-complement (the infinitive phrase 'to be in good health').

Does that help you?