Sentence examples for has often been doubted from inspiring English sources
The validity of the doctrine, however, has often been doubted on empirical grounds.
But there have often been doubts about the authenticity of Rembrandts - not just the obvious fakes or the minor pictures, but about works that were once (and perhaps, given the changes of fortune that reattribution brings, should be again) placed among the best of his work.
Liverpool insiders will tell you that, far from being the indomitable leader of legend, Gerrard has often been stricken by self-doubt.
But Djokovic, whose history of high-profile retirements has often been treated as a pretext to doubt his own resilience, raised his game to win 7-5, 6-4, 3-6, 6-4.
The so-called "sailing ship effect" has often been stated as though there is no doubt that it really took place in the end of the 19th century.
In the years since his masterpiece "Reasonable Doubt," the rapper has often been accused of running on empty, too distant now from what once made him real.
No doubt the shift has often been confusing and controversial in incorporating the convergence and collision of styles and ideas that compete for the attention of viewers globally.
There has never been any doubt about Smalling's ability to defend but there has often been some concern about his ability on the ball.
No doubt this is a useful corrective to the hero worship Columbus has often been accorded.
But while his talent has never been in doubt, his desire to put the success of the team above his individual needs has often been questioned.
