语内干扰主要表现为过度概括，忽略了规则的限制，语言规则的不完整应用，错误的假设概念。
While intralingual error is caused by overgeneralization, ignorance of rule restrictions, incomplete application of rules, false concept hypothesized, induced factors and lack of practice.
导致失误的原因有：非语言因素干扰、语内负迁移及语际负迁移。
The causes of them include non-linguistic interference, negative intralingual and interlingual transfer.
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