Example sentences of "[modal v] [verb] if [noun sg] is " in BNC.

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1 Even the biggest stars rarely sell 6m copies ( as Janet must do if Virgin is to make a profit ) for more than a couple of records .
2 Yet , as we have seen , there is a symbiotic relationship between the formal codes of the laws of war and the generally accepted rules which must apply if humanity is to triumph over warfare .
3 This framework must change if action is to be effective .
4 The speaker 's ability to plan utterances is not sufficiently good to allow planning and production to co-occur smoothly and without interference ; and so there are periods when production must suffer if planning is to proceed .
5 It was pointed out by Wragg and Robertson ( 1978 ) that total factor productivity must rise if growth is to be sustained .
6 The problems that may occur if gonorrhoea is left untreated can usefully be divided into those that occur locally , that is , close to the original site of infection , and those that are systemic , due to dissemination of the infection ( usually by means of the blood-stream ) throughout the body .
7 In certain topographical regions , linear patterns may develop if water is at a premium , as in the chalk valleys , or if factors other than subsistence are important , such as roads or water routes .
8 Checking the electricity bill will show if consumption is greater than , say , 20,000kW/hr a month .
9 Drift allowance not enough The QDMs will decrease if wind is from your left The QDMs will increase if wind is from your right .
10 Drift allowance too much The QDMs will increase if wind is from your left The QDMs will decrease if wind is from your right 6 .
11 Drift allowance not enough The QDMs will decrease if wind is from your left The QDMs will increase if wind is from your right .
12 Drift allowance too much The QDMs will increase if wind is from your left The QDMs will decrease if wind is from your right 6 .
13 This is a very convenient system , but as well as contact problems electronic ones can arise if pressure is insufficient .
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