The phrase "advent has been" is correct and usable in written English.
It can be used to discuss the arrival or beginning of a significant event or period, often in a religious or seasonal context.
Example: "The advent has been a time of reflection and preparation for many communities around the world."
Alternatives: "the arrival has been" or "the onset has been".
Their advent has been compared to that of the barbarian penetration of western Europe in the 5th century ad, which marked the end of the declining western Roman Empire.
Many of the fake messiahs were picked up by security men in the courtyard to the mosque in Jamkaran, a village near Qom, whose reputation as the place of the awaited Mahdi's advent has been popularised nationwide by President Mahmoud Ahmadinejad.
Being innkeepers for our homeless guests this Advent has been good practice for living into our daily, all-year-long call to serve Jesus.
The movie (whose advent has been eagerly awaited by members of both sexes although reportedly, more by the fair sex than the other one) tells a story of a young woman's introduction into the world of sexual bondage.
In many respects, the advent of competition has been good for the media.
The advent of MDCT has been the greatest advance in trauma care in the last 25 years.
The advent of omics has been a tantamount to the progress in all the fields of biotechnology.
While the advent of technology has been the prime cause of the media's indoctrination, it is also going to be the greatest strength for spreading body-positive messages.
As three of the tracks from this album were reused in the soundtrack to Final Fantasy VII Advent Children, it has been speculated that the album was produced with the intention to provide tunes for Advent Children.
The advent of Fox News has been more momentous.
"The advent of T.S.A. employees has been a nightmare for my work life.
