Example sentences of "[vb pp] [adv] [conj] prevent " in BNC.

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1 The proportion of responders achieving independence from parents rose with age and suggests that independence is delayed rather than prevented by the presence of cystic fibrosis .
2 Lessons must be designed so as to prevent the learner making mistakes .
3 They stopped it being watered down and prevented the part about combating discrimination from being taken out .
4 One views unusual vertical arrangements with suspicion , presuming that they are made so as to prevent others entering the industry , to raise margins and thereby increase profits at the expense of consumers .
5 ( 5 ) The agreement will be construed so as to prevent fraud .
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