This multifactorial corpus-based exploration of past tenses focuses specifically on the present perfect (PP) versus simple past (SP) alternation in intermediate-to-advanced learner English produced by French and German native speakers. While existing work on past tenses in L2 has traditionally focused on the role of lexical aspect in the acquisition and uses of these past tenses, the current study focuses on the linguistic context of use of these tenses and identifies the linguistic features whose co-occurrence and combined effects cause native speakers and learners to differ in their uses of past tenses. Methodologically, the study uses a random forests approach including a surrogate logistic regression model and interactions between contextual linguistic features. Overall, the multifactorial results suggest that not all linguistic contexts facilitate native-like uses of the PP and SP equally as some contexts more than others are susceptible to cross-linguistic interference.

中文翻译：

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L2中过去时的语境化：当前完美与简单过去交替中的组合效应和交互作用

基于过去时态的多因素语料库探索特别侧重于法语和德语为母语的英语的中高级英语学习者的当前完美（PP）与简单过去（SP）的交替。虽然有关L2过去时态的现有工作传统上都集中在词汇方面在这些过去时态的习得和使用中的作用，但当前的研究集中在使用这些时态的语言背景上，并确定了它们共同出现和发生的语言特征。综合效果导致母语使用者和学习者在过去时的用法上有所不同。从方法上讲，该研究使用了随机森林方法，其中包括替代逻辑回归模型以及上下文语言特征之间的相互作用。全面的，