Example sentences of "shown [pers pn] to be " in BNC.

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1 Occasionally long-term contracts have been used , but recent experience has shown them to be uncertain , given the volatility of currencies .
2 Although magistrates are no longer predominantly male , successive studies ( notably Baldwin , 1976 ; but see also Hood , 1972 , and Burney , 1979 ) have shown them to be overwhelmingly middle-aged and middle-class .
3 Peter Conrad 's previous books of critiism ismand autobiography have shown him to be a master of a certain style of brilliant , allusive , penetrating prose .
4 For Forget , who had demonstrated such courage under pressure , ti was a match which , according to Borotra , had ‘ shown him to be a really great player ’ .
5 Wellcome 's share price lost 85p in early dealing after news that trials of its anti-Aids drug , AZT , had shown it to be ineffective in treating the virus .
6 Experience here has shown it to be highly successful .
7 This is one of the things that some studies have shown it to be the case , other studies have n't .
8 Since then , however , two further studies have shown it to be no better than placebo and inferior to 5-ASA .
9 The theoretical advantage of this technique is that it deals directly with the oesophageal varices without affecting liver perfusion : a prospective study has shown it to be superior to standard and distal splenorenal shunts in patients with portal hypertension secondary to schistosomiasis .
10 Tests carried out by Australia 's CSIRO research body has shown it to be effective against over 30 pests ranging from beetles to nematodes .
11 I have seen a kingfisher here and a survey of the pond has shown it to be very important for invertebrates as well as amphibians .
12 ‘ This sort of thing can actually work out to a station 's ultimate advantage if handled correctly , which it has been , since you 've shown us to be flexible and public-spirited .
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