have been prolonging
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present perfect progressiveof prolong.present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
prolongverb (used with object)to lengthen out in time; extend the duration of; cause to continue longer.
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.
Or he may, merely, have been prolonging an experience which he found agreeable.
From Mary Wollaston by Henry Kitchell Webster
They have all been assisting at the marriage of a niece of yours, I hear, and the Heavenly Twins have been prolonging the festivities on their own account.
From The Heavenly Twins by Madame Sarah Grand