Example sentences of "[pers pn] is essential [conj] [noun sg] [noun] " in BNC.
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| 1 | As it is estimated that 25 per cent of schoolchildren will have a sight problem that needs attention ( Optical Information Council ) it is essential that vision screening procedures should be effective . |
| 2 | It is essential that back-up copies of computer programs are made . |
| 3 | The power supply for the ventilation system introduces another factor , since it is essential that emergency power to other functions in the accommodation should not be jeopardised . |
| 4 | It is essential that management reward rather than punish the risk taking required in abandoning the old and trying the new . |
| 5 | It must be emphasised , therefore , that it is essential that management monitor and frequently check the competence of their surveying staff , the methods of measurement used , and that sub-contractor 's accounts are accurate and up to date . |
| 6 | ‘ Therefore , it is essential that sound guidance is available to those who need it . ’ |
| 7 | It is essential that healthcare staff know how to prevent cross-infection of HIV without letting it affect patient care . |