Example sentences of "[conj] have been [vb pp] [conj] [v-ing] " in BNC.

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1 Now the results of experiments on habituation of the OR have been taken as supporting the latter assertion — dishabituation fails to occur if the changed context is familiar .
2 Such are the difficulties that have been found when trying to scale up toy grammars that computational linguists are drifting away from the creation of demo-sized systems and aiming at larger systems .
3 It has also often been argued that there is empirical evidence that rules the suggestion quite out of court by demonstrating that a pre-exposed stimulus quite lacks the properties that have been taken as defining for an inhibitory CS ( Rescorla 1969 ) .
4 The range of chemicals that have been identified as causing problems is enormous — Table 3 shows a representative selection .
5 But the different ‘ policy groups ’ that have been identified as playing a part in policy-making and associated with specific interests and policy proposals are all bureaucrats — the military , industrial managers , agricultural experts , state officials , the economic bureaucracy , the party apparatus , police officials ( Brezezinski and Huntington 1964 ; Asparturian 1968 ; Skilling and Griffiths 1971 ; Schwartz and Keech 1968 ) .
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