Example sentences of "shown [pron] to [be] [adj] [prep] " in BNC.

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1 Market related pricing has shown itself to be effective in ensuring that consumers are aware of the real value of the resources they use , not only as it affects energy consumption but also in the realms of energy efficiency investment .
2 YTS has been a major provider of new opportunities and through its funding mechanism , its special assessment and age exclusions , and its provision of special equipment and services , it has shown itself to be responsive to the needs of very many young people with disabilities and learning difficulties .
3 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 .
4 Tests carried out by Australia 's CSIRO research body has shown it to be effective against over 30 pests ranging from beetles to nematodes .
5 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 .
6 It seemed to me at the time that the teachers of science at school , who had certainly shown themselves to be opposed to me were , if not actually off their trolleys , a trifle on the demented side and undoubtedly strangers to coolness .
7 The two stallions who could not even do the test had previously shown themselves to be intelligent by their rapid ability to learn when they were broken in .
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