Example sentences of "if they have been [v-ing] [prep] " in BNC.

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1 Sometimes my tears are so hot they feel as if they 've been baking inside me , sometimes they feel bigger and wetter , sometimes rather lighter and not so salty .
2 The English had not been acquiring new subjects in the first century and a half of their overseas expansion ; for the next century and a half they acquired new subjects at a rate which would have been quite inconceivable if they had been dealing with men and women who thought about their political rights and obligations in terms of nationalism .
3 The former concept had a crucial historical advantage at the birth of mechanics ; Western thinkers approaching things as materials which stay put until the craftsman or builder reaches for them , would not have started trying to measure how the inert is moved by external forces if they had been thinking in terms of inherently active ch'i .
4 By searching for flashes repeating at exactly the same rate as the radio pulses , they were able to investigate much fainter pulsations than if they had been looking for pulses occurring at an unknown rate .
5 If they had been working on fruit trees they 'd come in much higher .
6 Writing the software was somewhat tedious , but having to work at this level did help the designers to get away from preconceptions about interaction which they might have had if they had been working within the input/output facilities provided by a conventional mini or mainframe operating system ( for example , that it needs a RETURN to terminate user input or that the operating system can properly handle the echoing of characters to the terminal ) .
7 She did n't know if they had been driving for minutes or days .
8 However , the children of your unmarried partner can not inherit from you unless you adopt them or make a will even if they have been living as a family with you both .
9 if they have been sniffing for so e time , arrange a health check
10 When we have breakfast , on the 8th floor , we can look down on the river , and watch all the river traffic , including large passenger vessels , big merchant ships belching smoke , strings of wooden barges , and big and small old-fashioned junks , which look as if they have been sailing for a 100 years at least .
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