Example sentences of "and it [is] [adv] necessary [to-vb] " in BNC.
Next page| No | Sentence |
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| 1 | Clearly this gives the axial spin rate if the radius of the planet is known , and it is also necessary to know the axial orientation of the planet with respect to the Earth . |
| 2 | The solvent type paint removers do not normally raise the grain and it is not necessary to sand after stripping . |
| 3 | Unlike French polish , cold cure lacquers can be applied liberally and it is not necessary to use a good quality brush . |
| 4 | Many systems are menu-based and it is not necessary to recall the relation names . |
| 5 | Similarly , with a pellet accumulation , the identity of the owl or bird of prey is revealed by the size and shape of the pellets and their location , and it is not necessary to find any of its bones in order to identify the predator . |
| 6 | Thematically , in a the subject is the agent of the action and the object is the patient , in b the subject is the patient and it is not necessary to express the agent . |
| 7 | Another problem is that reactions such as halide exchange may occur during disk preparation , and it is sometimes necessary to evacuate the die during pressing to prevent oxidation of samples under the extreme pressure . |
| 8 | In practice , discriminatory rules may still be encountered in the member states and it is sometimes necessary to invoke EC rules in the appropriate national court in order to secure equal access to the relevant market . |
| 9 | Most coins , however , offer no direct evidence for their date , and it is consequently necessary to use other methods for establishing it . |
| 10 | The into-wind wing must always be kept down by moving the stick across a little into wind , and it is always necessary to rudder out of the wind . |
| 11 | However , every piece of music is different and has its own problems , and it is therefore necessary to point out a few pitfalls , and to make a few special recommendations . |
| 12 | When this point is reached , the resin and thus the softner is said to be exhausted , and it is therefore necessary to regenerate the resin in order to restore its softening ability . |
| 13 | In the actual examination all the figures are provided and it is only necessary to infer from inspecting the graph or drawing which of four alternatives is the correct one . |
| 14 | It has been said several times in this chapter that tone is carried by the tonic syllable , and it is now necessary to examine this statement more carefully . |
| 15 | It may be that the oleoresins of the dipterocarps have an effect on the bacteria of the fore-stomach of colobines and it is now necessary to study the interaction of these bacteria with fibre and the wide range of tannins , some of which shield protein from degradation in the fore-stomach , or denature them so as to enhance proteolysis . |
| 16 | The method is least satisfactory in health resorts , coastal ports , London etc. , and it is obviously necessary to avoid peak holiday times and advisable to choose a weekend . |
| 17 | Both E and G depend on the shape of the specimen and it is usually necessary to define the shape carefully for any measurement . |
| 18 | and it is usually necessary to remove it by flocculation with alum or alum with sodium aluminate , followed by filtration ; the final pH should be adjusted so as to be close to neutrality on the alkaline side . |
| 19 | Machine detergents : Comparative costing is a little more difficult as two or more chemicals are involved , such as detergent and rinse additive , and it is often necessary to compare powders with liquids . |
| 20 | Many aspects of the site , including dating , are revealed by its finds , and it is often necessary to compare finds with those discovered elsewhere . |
| 21 | Of course , this is a very simple case , and it is often necessary to consider many more AOs and MOs . |
| 22 | The term ‘ rich ’ implies that the pictures should contain a wealth of information relevant to the study ; however , trying to include too much detail can result in them becoming extremely cluttered , and it is often necessary to summarise the detail ( using the interview analysis technique if required ) and redraw them as the study progresses . |