has been testing
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present perfect progressiveof test (3rd person singular).present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
testnounthe means by which the presence, quality, or genuineness of anything is determined; a means of trial.
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.
He has been testing the alliance’s resolve for some time.
From Slate ● Aug. 29, 2026
The company has been testing its autonomous vehicles in San Diego with a safety driver behind the wheel since earlier this year.
From Los Angeles Times ● Jul. 9, 2026
The hospital has been testing an AI-based patient-observation system that alerts staff when elderly patients are at risk of falling out of bed, which leads to longer hospital stays.
From The Wall Street Journal ● May 12, 2026
Zoox currently offers free public trips in Las Vegas and has been testing in Los Angeles for almost a year.
From MarketWatch ● Mar. 11, 2026
George has been testing seed," said Jay, "and he might tell us about it now, couldn't he, Chief?
From The Library of Work and Play: Gardening and Farming. by Ellen Eddy Shaw