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
A coastguard ship had been monitoring the Adriana for 15 hours before it sank.
From BBC ● May 26, 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
Gadd had been monitoring traffic while parked in the shoulder lane.
From Seattle Times ● Mar. 7, 2024
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
