而com的部分曾经写作con，不过并不是pros and cons（利弊，正反）词组中con所代表的“否定”的意思，这个前缀实际上加强了单词的语气。

The com- in comfortable was once a con —but that didn’t mean “not” as in pros and cons, it is a prefix that intensifies the main meaning of the word.

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英语的间接否定句中，否定部分可借助于隐含否定意义的词、词组及惯用句式来表达。

The indirect negative parts of English sentences can be expressed by means of implied negative words, phrases and idiomatic sentence patterns.

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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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