Example sentences of "[noun] is [adj] when a [noun sg] " in BNC.

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1 The effect is similar when a District Health Authority pays a private hospital to perform operations on NHS patients .
2 This effect is noticeable when a stream of sunlight passes into a darkened and dusty room .
3 A criterion is satisfied when a skill involved is used satisfactorily in accordance with a teacher 's judgement .
4 The main advantage is that no ACT is payable when a company issues additional shares to a shareholder in lieu of a cash dividend .
5 Back channel behaviour , which can also include nods and sentence completions is used when a participant wants to indicate to the person speaking that he should continue .
6 The cake is ready when a skewer inserted into the deepest part comes out cleanly .
7 The extra plasmids may appear simply because of the normal instability of the genetic material of the blood cell : cutting out large chunks of DNA is routine when a blood cell makes antibody genes .
8 This structure is useful when a project does not begin to generate revenue until completed .
9 Secondly , the variation in the reference measurement is greater when a plant is present , but still considerably less than the variation in the plant measurement .
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