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

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1 The most obvious example is when a competitor raises or lowers his prices .
2 How sad it is when a believer in his forties or fifties is merely an absentee landlord , living idly off the intellectual rent from the thinking of his student days !
3 DUCK HOOK : This is when a ball is mishit and flies very low and fast while veering rapidly to the left , usually landing the unfortunate player in terrible trouble .
4 The true mark of the Spirit 's operation is when a man can say from his heart that Jesus is his Lord .
5 The time to change to a smaller hook is when a lack of bites suggests you ought to try a smaller bait .
6 When a crisis comes , that is when a paradigm no longer seems valid , a multitude of competing theories may arise , and the scientific community is in a state of disarray .
7 Pica is when a child regularly and excessively eats inappropriate objects , such as dirt , coal , stones , fluffy materials .
8 Depression is when a recession gets really bad .
9 The only times the die is rolled to advance the token is when a word is identified within the one minute time limit
10 or the team is first to identify the word in any hang on , hang on the only the time the die is rolled to advance the token is when a word is identified within the one minute time limit comma or a team is first to identify the word in any all play situation .
11 One exception to this requirement is when a view to the front can be obtained without first looking through the windscreen .
12 This is when a phrase finishes on the second ( or weak ) and not on the first or third beat of a final bar .
13 ( Note that what matters is when a gene affects survival and fertility , not when it is expressed ; for example , a gene which is expressed early in the development of the heart might increase the chance of heart disease much later in life . )
14 Using the binary tree structure , a successful search is when a node in the tree is reached containing the candidate string .
15 The most obvious case is when a hoard includes both coins and other objects ; indeed it is only in these cases that the objects in question can be accurately dated ( or rather the date by which they must have been made can be accurately established ) .
16 A disaster is when a plane falls out of the sky and 296 people get killed .
17 The only category in which that will not apply is when a student is living with or married to someone who is not a student .
18 There is also the danger of a stroke which is when a blood clot occurs in the brain and the blood supply is cut off .
19 The other interesting scenario is when a woman who has lived with a man at some stage in her life subsequently opts for marriage , either with this partner or a future one .
20 So it is when a woman is giving birth .
21 The one time you see it is when a woman takes her clothes off and can not look you in the eyes ( as I could n't then ) .
22 Other cutoff points have also been prevalent : quickening , for instance , which is when a woman first becomes aware of fetal movement .
23 ‘ Fasting can be resorted to only against a lover , not to extort rights but to reform him , is when a son fasts for a father who drinks …
24 A more publicised arrangement is when a wholesaler or group of wholesalers invite retailers to affiliate to them and agree to take the bulk of their purchases from them .
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