whereas的用法：作为名词，中文含义有“鉴于”、“开场白”、“条件性陈述”；作为连词，中文含义有“然而”、“但是”、“尽管”、“鉴于”，可用以比较或对比两个事实，也可用于正式文件中句子的开头。
whereas的中文意思及用法介绍
1、作为名词时，意为鉴于;开场白;条件性陈述。
例句：The research of image and video is very important whereas their characteristic.
鉴于图象和视频数据的这些特点，对图象和视频的研究就显得尤为重要。
The statements made in the whereas clauses above are hereby confirmed as true and accurate.
确认上述“鉴于”条款中所做出的声明真实、准确。
2、作为连词时，意为(用以比较或对比两个事实)然而，但是，尽管;(用于正式文件中句子的开头)鉴于。
例句：Some of the studies show positive results, whereas others do not.
有一些研究结果令人满意，然而其他的则不然。
Pensions are linked to inflation, whereas they should be linked to the cost of living...
养老金与通货膨胀挂钩，然而它们其实应该和生活费用挂钩。
Whereas income distribution of economic interests involved ownership and equity problems and its important influence.
同时鉴于收入分配牵涉经济利益的归属和公平问题以及其重要影响。
Whereas, all the Civil Law countries make provision concerning Eigentumerhypothek.
鉴于此，大陆法系国家的民法都对所有人抵押权作了规定。
Whereas the property is held in trust for the appellant.
鉴于财产是为上诉人托管的。
Whereas even this evidence of his is incomplete.
尽管他的证据还不完全。
Whereas he has no financial support to go to college.
但是，没有人资助他上大学。
Some of the studies show positive results, whereas others do not.
有一些研究结果令人满意，然而其他的则不然。
