Example sentences of "may [verb] been based on " in BNC.
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| 1 | This rumour may have been based on someone having witnessed some signs of a growing affection between Richard and Margaret , but we can not be sure . |
| 2 | Some voices of the past may have been based on shaky techniques , or their use transgressed today 's views about musical taste , but many others still shatter the sense by their beauty , magnificence and sheer character in the vocalisation . |
| 3 | AN UNLIKELY winner , John Byme 's bright , affectionate ( and , as usual , part-autobiographical ) comedy may have been based on the dubious allure of flabby men playing rock 'n' roll in the '80s ( Scotland 's The Majestics , led by the formidable Robbie Coltrane ) but it provided umpteen memorable supporting characters , some genuinely touching , if wacky , romantic interludes and tons of '50s classics for the nostalgia vote . |
| 4 | The ad may alter or undermine an unfavourable attitude or group of attitudes to the brand ( which may have been based on ignorance or emotion … ) . |
| 5 | His pamphlet Nothing gained by overcrowding ! ( 1912 ) may have been based on questionable statistics , but the approach and general philosophy proved increasingly acceptable to informed opinion . |