Example sentences of "when they [vb mod] [adv] [vb infin] [art] " in BNC.

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1 The conclusion on predators is therefore that they have minimal effects on small mammal populations when numbers are high , that they have no braking effect when numbers are increasing , that they may have some effect when numbers are declining , but their major effect is when numbers are low , when they may also delay the recovery phase of the population cycle ( Southern , 1979 ) .
2 Spreads ( i.e. differences between buying and selling prices ) have sometimes been enormous , particularly if quoted by a Harvard market-maker when they would sometimes overreach the 10% level .
3 YOU CAN always spot people who do n't know anything about pop music when they ca n't tell the blokes from the women on records .
4 ‘ I do n't say they are there for months but when they ca n't find a friend or relative to put them up they have to resort to anywhere to keep out of the wind and rain .
5 Octavia Hill , too , adopted the principle that her housing ventures must be self-supporting , and that the tenants should pay an economic rent ; she maintained that rate-aided housing might be a danger to poorer tenants , who would be in the position of having to contribute through the rates to council housing , when they could scarcely afford the rent for their own inferior accommodation .
6 Because students felt that they could not approach staff , they often had problems about what to do when they could n't understand the work :
7 As we have seen , defendants can protect themselves by making written offers when they can not make an effective payment into court because they are faced with a split trial .
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