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英文科技论文中的语言技巧，不可不看
a)如何指出当前研究的不足以及有目的地引导出自己的研究的重要性通常在叙述了前人成果之后，用However来引导不足，比如However, little information.. little attention... little work... little data little researchor few studies few investigations... few researchers... few attempts...or no none of these studieshas (have) been less done on ... focused on attempted to conducted investigated studied (with respect to)Previous research (studies, records) has (have) failed to consider ignored misinterpreted neglected to overestimated, underestimated misleadedthus, these previus results are inconclisive, misleading, unsatisfactory, questionable, controversial..Uncertainties (discrepancies) still exist ...这种引导一般提出一种新方法，或者一种新方向。如果研究的方法以及方向和前人一样，可以通过下面的方式强调自己工作的作用：However, data is still scarce rare less accurate there is still dearth ofWe need to aim to have to provide more documents data records studies increase the datasetFurther studies are still necessary... essential...为了强调自己研究的重要性，一般还要在However之前介绍自己研究问题的反方面，另一方面等等比如：
1)时间问题如果你研究的问题时间上比较新，你就可以大量提及对时间较老的问题的研究及重要性，然后说(However)，对时间尺度比较新的问题研究不足
2)物性及研究手段问题如果你要应用一种新手段或者研究方向，你可以提出当前比较流行的方法以及物质性质，然后说对你所研究的方向和方法，研究甚少。