Example sentences of "[verb] [prep] [adv] long period " in BNC.

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1 Teachers often report that they completely switch off at the beginning of the holidays , or sleep for abnormally long periods of time for several days .
2 Interestingly , in those subjects living for fairly long periods in isolation , in whom the pattern of sleep and activity becomes irregular ( see Chapter 2 ) , meals too become erratic in their numbers and composition .
3 This will be quite different to their usual routine , of course , when they may sleep for quite long periods .
4 I have noticed that this frustrating experience usually occurs in promising conditions when you expect to catch fish , and when these bites begin they last for unusually long periods and happen very frequently .
5 Mood in such circumstances , however , generally refers to a state such as depression typically continuing for relatively long periods of time , often hours or days .
6 Above all it is important for the staff planning groups to decide what ‘ interdisciplinary ’ work or topic work will actually mean for the learner in practice , and choice will depend in part on the school 's view of the ‘ whole picture ’ spread across quite long periods of time , with the teachers planning carefully how they intend to create a balanced curriculum over weeks and months .
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