中文摘要：

面向英汉机器翻译，提出改进的介词语义模式相关概念和单重介词扩展形式，构建英语单双重介词语义模式库，提出一种基于语义模式扩展的英语单双重介词语义分析和汉译算法。将该算法与单双重介词固定搭配语义模式库、介词相关句式语义模式库、一般双重介词语义模式库和特殊单双重介词语义模式库相结合，对英语单双重介词进行总体语义分析和汉译。实验表明，利用该方法能有效解决一般文体和体育体裁中的英语单双重介词汉译的问题。

英文摘要：

For English-Chinese machine translation,this paper introduced the improved concept of semantic pattern and the ex- tending forms of English single prepositions.Semantic Pattern Bases of English single and double prepositions were constructed, and a new semantic analysis and Chinese translation algorithm based on Semantic Pattern Extending for English single and dou- ble prepositions were presented.The algorithm was combined with Single and Double Preposition Set Phrase and Sentence Seman- tic Pattern Bases,General Double Preposition and Special Single and Double Preposition Semantic Pattern Base to resolve the problem.The test results show that this method has a good effect on resolving Chinese translation of English single and double prepositions in general and sports contexts.