Example sentences of "[is] [adj] to be certain " in BNC.
Next page| No | Sentence |
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| 1 | From the tracks alone it is possible to be certain of the bipedal stance of certain dinosaurs , and to measure their stride . |
| 2 | However , in the absence of detailed comparative work on the Continent it is impossible to be certain , but such textiles are viewed as a Continental fashion entering southern England through Kent . |
| 3 | Although it is impossible to be certain , this assumption is supported by the overall length of service of the majority , their attachment to the particular employer , as well as their answers to specific questions about redundancy and early retirement . |
| 4 | It is impossible to be certain , however , whether it is always technology that has caused change or whether technical innovation has been spurred by changes elsewhere . |
| 5 | It is impossible to be certain that the child is making explicit his indecision about which square is being targeted ( though the eye movement record suggested that this was the case ) . |
| 6 | If this is correct , and it is impossible to be certain how far the places for which adequate data survive are typical , it may indicate that rural areas saw an earlier recovery of population than the towns and certainly suggests that there were marked variations between different regions of the country . |
| 7 | In the absence of an obvious bleeding point , it is impossible to be certain that bleeding originates from the angiodysplasia until the rest of the gastrointestinal tract has been examined . |
| 8 | Variable proportions of patients with anaemia are found to have dual pathology and it is impossible to be certain which lesion is the major contributor to blood loss until the lesions have been treated . |
| 9 | Many studies have been performed using in vitro tests and it is difficult to be certain of the relevance of these tests to platelet function in vivo . |
| 10 | Spokesman Andrew Davis said : ‘ We believe freak weather conditions may have caused an inversion , but it is difficult to be certain at this stage . |
| 11 | In the absence of a greater range of evidence it is difficult to be certain about how representative the Sutton Hoo mound 1 boat is of the range of ship types . |
| 12 | Now , they were combined and synthesized on aesthetic principles which apparently did not always depend on the content of the subject matter , although it is difficult to be certain in an area such as this . |
| 13 | A variety of wording is used and it is difficult to be certain how such clauses will be interpreted ; but the change in judicial attitudes just noted would suggest that they will fare better than did the clause in Anisminic . |
| 14 | It was described in a Greek herbal written in the third century B.C. and is probably a native of the eastern Mediterranean area , though it is now so widespread it is difficult to be certain of its origin . |
| 15 | It is difficult to be certain of the impact of unemployment upon women . |
| 16 | Never use detergent for cleaning , as it is difficult to be certain when all traces have been removed . |
| 17 | It is difficult to be certain from the passage whether Hezarfen believes there to have been official muftiliks at all in the fifteenth century , but he is clear on the point that the arrangements for whether formal or informal , were similar in the three cities . |
| 18 | From the demonstration alone , it is difficult to be certain that the motion is chaotic , in the specific sense that the word is now used , and not just very complicated . |