Example sentences of "[adj] [verb] when [art] [noun sg] [be] " in BNC.
Next page| No | Sentence |
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| 1 | It is not always easy to identify when a person is an employee and when he is not ; various tests have evolved and some concern questions of " control " . |
| 2 | CRP , so called because of the proteinic nature of the C-reactive substance was first discovered when a precipitate was formed where pneumococcal C-polysaccharide was added to the sera of ill patients . |
| 3 | Although protection of databases is reasonably effective ( there may also be issues of breach of confidence if parts of a database are used or published without permission ) , it may prove difficult to decide when the database was created , especially if it is subject to continual modification . |
| 4 | During the day it was difficult to judge when the charcoal was at the correct stage . ’ |
| 5 | If this is the exchange-rate mechanism working as it is supposed to , how will it be possible to tell when the system is failing ? |