Derivational affixes can produce new words, some change grammatical classes of words.
派生词缀可以产生新单词，一些改变单词语法等级。
According to the analysis errors of derivational affixes in the texts, the author point out the possible causes that lead to errors.
作者通过分析测试者的词缀知识的习得情况，揭示了导致产生失误的原因可能。
According to the analysis errors of derivational affixes in the texts, the author point out the possible causes that lead to errors.
作者通过分析测试者的词缀知识的习得情况，揭示了导致产生失误的原因可能。
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