§ 82. Tentative, tentatively. Прилагательное tentative можно употреблять при переводе русских прилагательных «предварительный», «пробный», «временный», «ориентировочный».

Например:

Наши опыты привели к предварительному выводу, что эти системы смешанных растворителей способствуют реакциям целлюлозы. «Our experiments have led to the tentative conclusion that these mixed solvent systems facilitate cellulose reactions».

В настоящее время нельзя предположить никакой определенной формы колебаний, отвечающей этому соотношению, следовательно, это соотношение следует считать лишь предварительным.

«No particular vibrational mode can be suggested at present which might account for this correlation which must therefore be regarded as a tentative one».

Наречие tentatively, соответственно, можно употребить при переводе русских наречий «предварительно», «предположительно», «в порядке опыта», «временно», «ориентировочно». Например:

Помимо этого, некоторые исследователи отметили слабую полосу и предположительно отнесли ее к добавочному NH поглощению. «In addition, the weak band was noted by some workers and assigned tentatively to an additional NH absorption».

Можно получить дальнейшие данные относительно правильности ориентировочно предполагаемой электродной реакции. «Further evidence bearing on the correctness of a tentatively assigned electrode reaction can be secured».

Наречие

§ 83. Место в предложении наречий времени типа: hitherto, generally, previously, recently, already, long, now, then, since, never.

Общепризнано, что наречия времени ставятся перед смысловым глаголом в Present и Past Indefinite, после глагола-связки to be, а в составных глагольных формах стоят после первого вспомогательного (или модального) глагола.

Например:

This reduction is generally made by choosing the critical state as the reference state. Such a reaction would generally be held to proceed through a substituted carbonium ion. They generally considered this reaction as proceeding via two routes. We have hitherto studied the metal complexes of the bidentate ligands, 2,2'-bipyri-dyl and 1,10-phenanthroline. The simple modification of Trouton's rule has not previously been employed as a basis for the comparison

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of liquids. We have previously given reasons for disfavouring this model. The other solution is that of Melander and Myhre, who have recently pointed out, that the unsymmetrical «structure» of composition SH⁺ need not correspond to a potential minimum along the reaction co-ordinate. The rates have already been measured at +20° by a rapid-reaction technique. Evidence that these reactions are proton-transfers has already been given. The first stable crystalline ethoxyformic anhydrides have only recently been reported, although two methoxyformic anhydrides with similar properties have long been known. We have now developed an apparatus to follow reactions photometrically at temperatures down to —140°. We have then examined the lability of the bis-series of complexes. It has since been shown that this result is not confined to the aqueous acids first studied. There has since been little systematic work on the complexes formed by this interesting ligand.

Однако в научной и технической литературе очень часто наречия времени ставятся после второго и даже после третьего глагола в составных глагольных формах.

Например:

Since Werner's time it has been generally assumed that sulphur-metal bonds are involved in such compounds. Spectroscopic studies of «living» polystyrene have been recently reported by Ku-wata. The infrared spectrum of N'-, N", N'"-triethylborazole has not been previously described. Filter-sheet separations on 3MM paper were effected on paper which had been previously extracted. We have now prepared a series of dimercapto-alkanols, the only other representative of this class to have been prepared hitherto being l,3-dimercaptopropan-2-ol, 3,4-dimercaptobutan-l-ol, and 4,5-dimercaptopental-l-ol. The two glycosides have been isolated previously from the bark of Engelhardtia formosana engelitin and isoengelitin. In particular, the magnetic properties of ammonium vanadium alum have been studied previously.

§ 84. Место в предложении наречий образа действия, придающих качественную характеристику глаголам, типа: mainly, largely, markedly, readily, easily, accurately, slowly, gradually, closely, effectively, immediately, reversibly, exclusively, satisfactorily, normally, unequivocally, unambiguously, tentatively, virtually.

Как и наречия времени, эти наречия не имеют определенного места в предложении.

Например:

In other cases, where some of the products do not crystallise easily, these could not be isolated.

Osmium pentafluoride melts at 70° to a green, viscous liquid which does not easily recrystallise. The liquid changes colour reversibly as the temperature is raised and at the boiling point (233°)

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is bright blue. Osmium pentafluoride can be handled and stored in glass under rigorously dry conditions. This cannot readily be achieved without introducing steps the chemistry of which cannot be visualised in detail. Analytical results prove that reduction occurs more readily in 24n- than in!6n-sulphuric acid. Their susceptibilities obey a Curie law quite closely. The liquids selected do not follow the principle of corresponding states accurately and it is concluded that their intermolecular forces are not conformal. The pronounced effect of additions of acetaldehyde shows it to give more vigorous branching than crotonaldehyde despite the fact that radical attack takes place preferentially on the latter. In another experiment, ammonia and ammonium chloride were added and the ammonia was immediately removed at low temperature to minimise ammonolysis of the aminoborine. At room temperature, the solid gradually lost hydrogen. As is to be expected, this effect is displayed most markedly by the strongest acid used. The ultraviolet and infrared spectra of ocotine are closely related to those of sepeerine and rodiasine. The group is found to consist of molecules all of which are effectively spherical. It is virtually identical with the spectrum given by a solution of acetophenone and m-dinitrobenzene in alkali of the same concentration. This model has mainly been built up from physical evidence. For condensed phases, however, conformity of physical properties to corresponding states has not been so extensively investigated. Previous «rules» relating to the entropy of vaporisation have been concerned mainly with the entropy difference between a liquid and vapour. This lack of interest has been largely due to the difficulty of synthesis. In most cases iodometric thiol determinations showed that acylation had occurred almost exclusively on thehydroxyl rather than on a thiol group. The titanium atom is normally considered to have a covalency maximum of six. The presence of these compounds has not been established unequivocally. At these temperatures the reaction is complex, and it is difficult to set up a mechanism which satisfies unambiguously all the observed facts. Ocotine can be assigned tentatively the molecular formula С₃₅Нз8Л^т₂О_в. It is tentatively suggested that, in the solid, the anions are polymeric. They suggest the formation of B-H bonds in the pyrolysis product, which might therefore be tentatively formulated as follows. The structure of the long-known series of compounds has never been satisfactorily explained.

Следующий отрывок иллюстрирует разные варианты расположения наречий образа действия в группе сказуемого:

Although acid-hydrolysis of the product KH₂N, B₂H₆ was fairly rapid, alkaline hydrolysis was slow and incomplete. The solid salt slowly evolved hydrogen at 150°, but no diborane or borazole. Tri-methylamine reacted very slowly and incompletely. These facts do not support a formula KH₃B—NH₂-BH₃ for the salt, from which diborane or borazole would be expected as pyrolysis products, from

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which trimethylamine might readily remove a borane group as Me₃N' BH₃, and which would be hydrolysed readily in acid or alkaline solution. The rapid acid and slow alkaline hydrolysis observed are however characteristic of an alkali-metal borohydride; this would not react readily with trimethylamine and would not decompose easily when heated. If the apparent KH₂N, B₂H₆ does contain the borohydride KBH₄, then the other constituent is probably polymerised aminoborine, H₂N,BH₂, and this also would not react with trimethylamine and would slowly yield hydrogen on being heated. The difficulty of completely replacing the methyl groups could then be explained if these were present in the polymeric aminoborine; their presence in the borohydride anion is much less probable. Potassium borohydride is soluble in liquid ammonia without reaction; aminoborine is slowly ammonolysed. The solid KH₂N,B₂H_e in liquid ammonia only evolved hydrogen very slowly even above 33°, but addition of ammonium chloride produced rapid evolution at low temperature.

§ 85. Место в предложении наречий, характеризующих научные и технические процессы, типа: mechanically, electrically, electrolytically, botani-cally, conductometrically, colorimetrically, potentiometrically, ехот thermally, thermodynamically, azeotropically, gravimetrically, ste-reochemically, fractionally, structurally, quantitatively, qualitatively.

Подобные наречия очень часто встречаются в научной и технической литературе и, как правило, стоят после того глагола, который они характеризуют. Например:

The technique consisted of making up mole-fractions by weight, sealing in Pyrex tubes, and rotating mechanically in a thermostat. The temperature was controlled electrically to + 0,05°.

Today over 90 per cent of all tin plate is produced electrolytically. The authors wish to acknowledge the kindness of Mr. B. J. Rendle for examining the timbers botanically. The stepwise replacement of aquo-by amine-groups can be followed by titrating sulphitotriaquo-palladium (II) with ammonia, both conductometrically and potentiometrically. The compound dissolves exothermally in water to give a brown solution and a small precipitate of hydrated osmium dioxide. The criterion adopted is related thermodynamically to the Barclay-Butler equation between heats and entropies of vaporisation. Benzene was added and the water was removed azeotropically. Iodine was determined gravimetrically as silver iodide. It was considered that this would stereochemically be unfavourable for proton-loss, and would therefore allow this process to occur predominantly in the methyl groups. The acid-insoluble SPNC was fractionally crystallised to give 712 g. of tetramer (m. 122°), 515 g. of a mixed

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polymer fraction (69% of trimer, 20% of tetramer), 808 g. of a mixture of oil and crystals, and a light yellow oil.

§ 86. Место наречий, относящихся к про д-л о ж е н и ю в целом, типа: fortunately, regrettably, unfortunately, undoubtedly, surprisingly (enough), obviously; originally, subsequently, eventually, finally; mathematically, physically, politically, scientifically, industrially; qualitatively, quantitatively.

Подобные наречия обычно характеризуют все предложение и являются вводными словами. Большей частью эти наречия ставятся в начале предложения.

Например:

Fortunately the methanol solvate of the ester (VII) could be converted into the solvent-free compound without loss of crystal-limly. Regrettably there have been no new world shaft-sinking records established during Congress, though indications are that at least one attempt will be made later this year. Unfortunately, the structure of Meinhard's compound is open to doubt. Undoubtedly, the syrupy triketal fraction was a mixture of various isomeric forms. Surprisingly, perhaps, chromatographically homogeneous 1,3-0-benzylideneglycerol showed absorption at 3633 and 3593 cm"¹. Obviously, the product formed from benzylsodium on prolonged storage is a poor initiator. Finally, positive proof of the presence of a methyl group on N(a) excludes structures in which N(a) is common to two rings, as in mavacurine and hunterine. Subsequently a number of the reactions with metal salts were investigated. Finally, heating at 200° produced more hydrogen than required by the reaction. Eventually, the system will contain only N- and 0-acetylethanolamine, the latter in an amount equivalent to that of acid originally added. Mathematically, there is no difference between this treatment and that described later in Section V. Physically, this may be regarded as an attraction of the surface for the ions immediately below it. Qualitatively, this is not unexpected.

Примечание. Однако указанные выше наречия встречаются иногда в середине предложения, по-видимому, в тех случаях, когда на них делается более слабое логическое ударение. Например:

Reaction between tw^To benzyl radicals could lead eventually to phenanthrene or anthracene.

§ 87. Роль наречий, характеризующих отношение автора к высказыванию и являющихся эквивалентом глаголов-характеристик (см. §221), типа: admittedly, announcedly, apparently, conceivably, reportedly, reputedly, seemingly, supposedly.

Эти наречия иногда употребляются вместо безличных предложений с глаголом-характеристикой, как например, it is admitted,

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it is announced, it is apparent, it is conceived, it is reported, it is reputed, it seems, it is supposed и их эквивалентов в обороте «Подлежащее с инфинитивом» (см. § 211). Несмотря на то, что их употребление значительно сокращает предложение, они все же встречаются относительно реже.

Например:

Считают, что эти толкования являются предположительными. «These interpretations are admittedly conjectural».

Как сообщают, это очень сильный реагент. «This is, announ-cedly, a very powerful reagent».

По-видимому, группы в трансположении препятствуют этой реакции. «The groups in the «trans position» apparently prevent this reaction».

Можно предположить, что в качестве промежуточного соединения образовался дибромгидрин VI. «Dibromohydrin VI conceivably could be produced as an intermediate».

Как сообщалось, силикагидрогель готовили, смешивая разбавленный силикат натрия и серную кислоту в деревянных ретортах. «Silica hydrogel reportedly was prepared by combination of dilute sodium silicate and sulfuric acid in wooden tanks».

По-видимому, это соединение труднорастворимо в концентрированном растворе гидроокиси аммония. «The compound is seemingly difficultly soluble in concentrated ammonium hydroxide solution».

Это противоречие, по-видимому, указывает на разные механизмы образования бензола. «This discrepancy seemingly indicates different mechanisms of benzene formation».

Эфир трифенилкарбинола, фигурирующий в уравнении, претерпевает тетрасульфонирование, предположительно (как можно предположить), в указанных положениях. «The triphenylcarbinol ether shown in the equation undergoes tetrasulfonation, supposedly in the positions indicated».

Можно предположить, что имела место частичная рацемизация. «A partial racemization could supposedly take place».

Для простого случая можно было бы себе представить, что разделение осуществляется посредством очень простого прибора. «In a simple case, a separation could conceivably be carried out with very simple equipment».

§ 88. Роль и место в предложении наречий типа: however, nevertheless, again, also, now, thus, on the other hand, alternatively, further, furthermore, conversely, therefore, in fact (см. подробнее § 89—94).

В научной и технической литературе подобные наречия играют очень важную роль, поскольку они связывают отдельные звенья рассуждения и обеспечивают логические связи между двумя предложениями. В русском языке такие наречия обычно стоят в

Ш

начале предложения, в английском они очень часто ставятся веере-дине предложения, а при наличии составного сказуемого — после вспомогательного глагола или глагола-связки.

Например:

Однако дело не обстоит так в случае З-фенил-2-пентил-тозила-тов. «This is not so, however, in the case of the 3-phenyl-2-pentyl tosylates».

Тем не менее было трудно получить однозначное прямое подтверждение для наличия амино-группы. «Unequivocal direct confirmation for the presence of an amino-group was nevertheless difficult to obtain».

Еще примеры:

Quantum-mechanical tunnelling in proton-transfer should be more easily detected the lower the temperature, and it is therefore of interest to measure the rates of such reactions at temperatures as low as possible.

We have also shown that with Grignard reagents aromatic thiol-acids give triarylmethanethiols.

We have now examined in some detail the reaction of titanium (IV) chloride with three primary aliphatic amines.

We have in fact found that solvolysis is greater with primary than with secondary amines. Both types of structure, however, contain phosphorus in three different environments, and should therefore exhibit three nuclear magnetic resonances. Only the intramolecular second moment was therefore calculated from the published data. At temperature above the optimum, on the other hand, the reaction takes place more rapidly but the catalyst is more rapidly destroyed. A given carbohydrase, on the other hand, has always the same optimum pH, even when acting upon different substrates.

Тем не менее нередко возможны случаи употребления вводных слов в начале предложения.

Например:

It may be that an internal radical or ion rearrangement is occurring. Alternatively the radical might be formed by attack by D or D⁺ when the incoming particle might be confined to certain geometrical paths by virtue of the crystal structure. On the other hand there are a number of elements, whose salts form stronger adducts with sulphides than they do with oxygen-ethers. On the other hand, the polymerization initiated by the transformed benzylsodium produced a polymer. Further, the intensity of the characteristic peak at 505 m. was a maximum immediately the ketone had been mixed with alkali; in contrast, the intensity of the absorption band in a mixture of acetophenone, m-dinitrobenzene, and alcoholic potassium hydroxide increased steadily with time. Furthermore, spectroscopic examination of the coloured solutions produced in the test shows that the maximum absorption in the visible region is shifted to longer wavelength.

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Русские эквиваленты

некоторых английских наречий, характерных для научной п технической литературы