monitor
noun
(especially formerly) a student appointed to assist in the conduct of a class or school, as to help take attendance or keep order.
had been monitoring
-
past perfect progressiveof monitor.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
On Nov. 4, FBI agents who had been monitoring the men arrested him as he was awaiting a flight to Istanbul at Newark Liberty International Airport.
From The Wall Street Journal ● Nov. 12, 2025
However Andrew Dakers, chief executive of West London Business, said he felt the incident reflected an "enormously frustrating" ongoing issue with power supplies in the area, which it had been monitoring.
From BBC ● Mar. 24, 2025
Officials at the desert zoo had been monitoring weather conditions and news accounts of the fire, so they weren’t surprised when they got the call requesting help, said animal curator Heather Down.
From Los Angeles Times ● Sep. 18, 2024
Rutt enthusiasts had been monitoring his fan page for weeks hoping for news that the colossal creature would avoid a similar fate and safely cross Interstate 94.
From Seattle Times ● Nov. 21, 2023
Radio calls my teammate Stuart Hutchison had been monitoring from Rob Hall on the South Summit made clear that our leader was in desperate straits and that Doug Hansen was dead.
From "Into Thin Air" by Jon Krakauer
