Example sentences of "they have be [vb pp] [to-vb] [adj] " in BNC.

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1 They have been devised to place minimum strain on the lifter and her back , while ensuring that the patient is not at risk of falling or being dropped .
2 Dogs are polymorphic in appearance because they have been made to look different by selective breeding controlled by their human masters .
3 First , they represent a putative developmental sequence which reflects the child 's gradual mastery of language for dealing with abstract ideas and , second , they have been shown to generate high levels of inter-observer agreement ( Blank and Franklin 1980 ) ( see Table 7.3 ) .
4 They have been forced to drink dirty water and ration meagre food supplies while both Israel and Lebanon leave them to starve .
5 Consequently the professional should discuss what has happened with the parents and make quite certain they know exactly why they have been advised to adopt certain practices .
6 For the same reason they have been known to treat surrounding farmland as though it were a vast municipal park across which their dogs can roam or their children can ride their ponies without much thought for the consequences .
7 Now they have been told to restore normal services ‘ without delay ’ , but no deadline is stipulated .
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