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had been monitoring
  • past perfect progressive of monitor.

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

She had been monitoring Angel, a 2-year-old black German shepherd, who was kenneled in the back at the Palmdale shelter, in an area that required an escort.

From Los Angeles Times • Dec. 3, 2023

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