现在完成时有否定结构、而现在完成进行时没有否定结构。
她不知道该往哪儿走，就去请警察帮助。（现在分词一般式的否定结构）
这就是在英语否定结构中常出现的歧义现象，这种否定结构即是英语歧异结构之一。
This is the ambiguity in the English negative structure, one of the English ambiguous structures.
本文列举了英语否定结构的主要表现形式及其在翻译中要注意的问题，以帮助学生提高翻译能力。
To help students improve their ability of translation, this paper listed the main forms of English negative structure and some problems in translation.
测试结果正确率达到了80%以上，表明上述方法在获取否定结构的语义特征上具有良好的性能。
This paper presents a comparison method to identify the focus of negation. Experiments get the case precision over 80%, which shows satisfactory performances with this method.
在含有否定结构的英语句中，如果是一个孤立的句子，往往会令读者觉得含有多种理解或者有多种意义。
In an English Sentence with negative structure, when it is isolated, there appears more than one interpretation or meaning.
本文探讨英语语言中一些特殊的否定结构，如转移否定、双重否定、隐形否定、部分否定和全体否定等。
This paper discusses some special negative structures in English, such as transferred negation, double negation, implied negation, partial negation and entire negation.
英语中的否定结构十分复杂，它在很多方面与汉语的否定结构不完全对称，是英语语法体系的难点之一。
English in the negative are complex, which in many ways the Chinese are not entirely negative structural Symmetrical, English grammar is one of the difficulties of the system.
本文从对外汉语教学的角度出发，对汉语和俄语中的否定结构进行了详细、系统的对比，包括词和词组层面上的否定以及句子层面上的否定。
This thesis contrasts the negation structures of Chinese with the structures of Russian in a comprehensive and systematical way from the Angle of the "Teaching of Chinese as a Second Language".
本文从对外汉语教学的角度出发，对汉语和俄语中的否定结构进行了详细、系统的对比，包括词和词组层面上的否定以及句子层面上的否定。
This thesis contrasts the negation structures of Chinese with the structures of Russian in a comprehensive and systematical way from the Angle of the "Teaching of Chinese as a Second Language".
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