Dictionary.com
Thesaurus.com

had been assembling

  • past perfect progressive
    of assemble.
    assemble
    verb (used with object)
    to bring together or gather into one place, company, body, or whole.

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.

See Examples For:

Jones listened to hundreds of songs to decide which nine should go on the album, and employed a dream team of musicians and songwriters that he had been assembling over the years.

From BBC Nov. 4, 2024

The 10-year-old Dutch bike maker, headquartered in Nunspeet, about 50 miles east of Amsterdam, had been assembling about 600 e-bikes a day prior to the coronavirus pandemic.

From The Verge Mar. 31, 2020

In a brutal twist, he had been assembling his life’s work for transfer to nearby Stanford University.

From Los Angeles Times Sep. 26, 2018

Mr. Geisenberger said that the governor and the casinos had been assembling training materials, updating and testing software, working on logo options and training casino employees and gaming enforcement staff.

From New York Times Jun. 5, 2018

Sir Charles Warren, had been assembling at Estcourt, marched out for Frere, where General Buller's headquarters had been established after the battle of Colenso.

From Story of the War in South Africa 1899-1900 by A. T. (Alfred Thayer) Mahan