Example sentences of "[adj] [verb] when [art] [noun sg] " in BNC.

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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 Unfortunately , nickel cadmium batteries run down from full power very quickly , and it is almost impossible to tell when a charge may be required .
3 But I do not mean to suggest either , he wrote , that it was all waiting and no doing , all sitting and no action , for though it was impossible to tell when the beginning would come , indeed , he wrote , there could not have been a real beginning if it had been possible to tell , for if it had been possible to tell that would have meant that there had already been a beginning , no , wrote Harsnet ( typed Goldberg ) , occasionally things were done , work was begun , though it was soon abandoned , it added up to nothing , it only showed me that I had been mistaken in thinking that I had indeed started .
4 The grapevine always flashed advance notice of such events , though it was never hard to guess when a VIP visit was imminent because of the frenzied housekeeping activity at each plant which always preceded it .
5 It may , for example , be hard to decide when an inquiry commences , particularly when it is the less formal variety of administrative action which is in question .
6 The television commentators are quick to say when a referee penalises the attacking team for collapsing in their opponents ' 22 metre area : ‘ Why would the attacking team want to collapse scrummage ? ’
7 By applying such a low EM field to a cell in order to excite it and then observing how long it takes to discharge , it is possible to determine when a cell has become transformed from a normal state to a cancerous condition .
8 Er , based on the evidence which the public consultation produced the Committee considered that the primary concern of consumers was to be able to identify when a gene likely to be a cause of concern to a significant proportion of the population was present in foodstuff .
9 it follows that it is important to recognise when the limitation period expires and ensure that no action is taken which could mislead a plaintiff .
10 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 .
11 Firstly , so that those who are slow know when the joke ends , or can have a moment to reflect and catch the subtleties of any double entendre .
12 It 's hard , I mean it 's , it 's difficult to tell , difficult to decide when the meaning has actually changed it 's a notoriously hard problem , which nobody really knows how to solve in the principle way .
13 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 .
14 During the day it was difficult to judge when the charcoal was at the correct stage . ’
15 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 ?
16 Upon the record being reperformed , it was at least possible to tell when the pianoforte stopped playing . ’
17 This is easiest to detect when the mound has been made of a material with a distinctive colour , such as chalk .
18 Section 59 defines when a company becomes insolvent for the purposes of section 58 .
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