在外语学习过程中，不同的学习者使用不同的学习策略，如回避、猜测、母语的迁移和过度概括等。由于外语学习者已习得了母语，掌握了各种概念，在初级阶段，外语学习者往往借助于母语的表达方式；由于外语学习者的水平差异，迁移的程度也有差异。当外语学习者把所学的外语语法 In the process of foreign language learning, different learners use different learning strategies such as avoidance, guessing, mother tongue migration, and oversimplification. Because foreign language learners have acquired their mother tongue and mastered various concepts, at the initial stage, foreign language learners often resort to the expression of their mother tongue; due to differences in the level of foreign language learners, the degree of migration also varies. When foreign language learners put the learned foreign language grammar