Example sentences of "if you do [not/n't] know what " in BNC.

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1 If you do not know what a tree or shrub is , exercise clemency and give it a year 's grace to demonstrate its worth before you turn it over to the axeman .
2 If you do not know what the true variable costs are , how can you make correct decisions ?
3 If you do not know what you are doing , you can pay out money unnecessarily .
4 This sum is impossible if you do not know what x stands for .
5 If you do not know what documents you have and how they relate to one another , your priority should be to put them in order rather than to transfer them to an electronic system .
6 If you do n't know what the system is required to do ; you do n't know anything .
7 If you do n't know what you 'd choose to do on the last day of your life , you do n't know what 's really important to you .
8 Oh well , if you do n't know what I 'm talking about , it does n't matter .
9 Trailers are perfect for films that you can only really put up with if you do n't know what they ‘ mean ’ .
10 If you do n't know what you want to do , you can never judge whether you 've done it .
11 And what I want then is to hold his hand in front of the television for several evenings a week , and if you do n't understand that , if you do n't know what that feeling is , if you do n't know why it 's like that then you know nothing , nothing , nothing .
12 There is no point in keeping exciting sounds if you do n't know what they are , or if you ca n't find them .
13 If you do n't know what to say , you have to think … you just stand quietly and do n't say nothing and something comes into your brain . ’
14 But perhaps we should apply a variant of this to pseudoscience : ‘ everything is possible if you do n't know what you are talking about ’ .
15 This tendency toward self-identification seems to be the norm for all the modern multi-processors and I must say I see little point ; if you do n't know what unit it is already …
16 If you do n't know what you want to communicate you ca n't make anyone else understand .
17 If you do n't know what they mean i anything if you do n't know how to do it it 's hard but if you do n't even know what they mean it 's very hard to work out what 's going on is n't it and what you 're supposed to be doing .
18 For instance , it is no use trying to prove that a certain sequence of steps will lead to supper if you do n't know what is in your larder .
19 They can be very confusing if you do n't know what it 's about .
20 If you do n't know what 's true , or what 's meant to be true , then the value of what is n't true , or is n't meant to be true , becomes diminished .
21 Erm now what they say about erm extroverts is that , if you do n't know what an extrovert thinks , you have n't listened .
22 Er if you do n't know what an introvert thinks , it 's because you have n't asked her .
23 Right , okay , well I 'll do it now , so we do n't , so we 're not mechanically going through this , cos I mean if you do n't know what a P E P is , it 's worth looking at now .
24 If you do n't know what to do right .
25 You can be caught out with your follow-up question if you do n't know what you are talking about ’ — Sir Robin Day .
26 Does anybody have a problem with what they 've got to do before we start put your hand up if you do n't know what to do .
27 Now this is a problem er because if you do n't sharply define your objectives and if you do n't know what you need to achieve them , then you 're likely to stumble into the possibility of an uncontrolled war e even into a total war whereas the original objective was not in fact er as serious er as , as er as that .
28 If you do n't know what you 're doing , do it neatly .
29 Honestly , David , if you do n't know what you did to Jennifer … ’
30 But it can be dangerous if you do n't know what you 're doing .
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