This article presents a critical, descriptive analysis of the convergences and divergences between grammar instruction in English as a second/foreign language (ESL/EFL) classrooms and in research-based recommendations found in instructed second language acquisition (ISLA) research. Using coursebooks as the representation of classroom grammar…

In the past, research on the cognitive neural mechanism of second language (L2) learners' processing time information has focused on Indo-European languages. It has also focused on the temporal category expressed by morphological changes. However, there has been a lack of research on L2 learners' various time coding means, especially for Mandarin,…

Research on L2 acquisition of the Spanish perfective and imperfective past has suggested that order-of-instruction (preterite before imperfect) may significantly contribute to learners' difficulty with mastering the imperfect. We sought to empirically test the effect of order-of-instruction by implementing a program-wide intervention in a beginner…

Previous research has indicated that explicit information (EI) about either the first language (L1) or second language (L2) along with task-essential practice can facilitate L2 learning (e.g., Fernández, 2008; McManus, 2022). However, little research has examined L1--L2 contrastive EI with L1/L2 practice. Targeting plural-marking accuracy, the…

This study investigated the relative ease or difficulty of grammar commonly taught in intermediate (second-year) German at the university level. Previous studies have investigated the ease or difficulty of specific grammar structures, factors that make it difficult to learn L2 grammar, and teachers' and learners' perceptions of difficult grammar.…

Inaudible syntactic markers are especially difficult to spell. This paper examines how 455 fourth graders spell silent French plural markers in a dictation with real and pseudowords after one year of formal French instruction (L2). The Generalized Linear Mixed Model analysis shows first that noun plural spelling (real and pseudo) is a strong…

This study investigates how speakers of Mandarin interpret negative sentences with the conjunction ("he" 'and'). Our experiments test three predictions that follow from the proposal that the Mandarin conjunction is a positive polarity item (PPI) for both children and adults. On this account, the Mandarin conjunction should be interpreted…

This paper explores the number marking challenges faced by L2 learners of English whose L1 is one of the classifier languages Mandarin Chinese (henceforth Chinese) or Bahasa Indonesia (henceforth Indonesian). It examines whether these groups differ in their marking of English number, and how the speaker's level of proficiency, as well as…

This study investigates the subject-verb (SV) concord of nouns with Latin plural endings in Philippine English. Despite the seemingly straightforward nature of SV agreement, it poses challenges for first-language (L1) and second-language (L2) English learners. Data from the GloWbe and NOW corpora were analyzed to identify the nouns' SV concord…

To become a native speaker, beyond obligatory rules, children need to learn systematic variation in the language, as it is present at all levels of language structure and is an integral part of linguistic knowledge. To give an example in English, speakers sometimes pronounce words ending in -ing with -in' (e.g., working vs. workin') depending on…

Languages vary with respect to whether sentences with two negative elements give rise to double negation or negative concord meanings. We explore an influential hypothesis about what governs this variation: namely, that whether a language exhibits double negation or negative concord is partly determined by the phonological and syntactic nature of…

Morphological variability in bilingual language production is widely attested. Producing inflected words has been found to be less reliable and consistent in bilinguals than in first-language (functionally monolingual) L1 speakers, even for bilingual speakers at advanced proficiency levels. The sources for these differences are not well…

This study is aimed at investigating how Indonesian writers in multidiscipline use reporting verbs (henceforth RVs) and reporting signals (henceforth RSs) in their research article introductions in English. Fifty research articles (henceforth RAs) were chosen on purpose from the recent edition of five different English language journals in…

This study explores the effects of receptive derivational affix knowledge, derivative frequency, part of speech, and vocabulary breadth on production of derivatives. Twenty-one speakers of English as a first language and 107 learners of English as a second language were asked to produce derivatives for 90 prompt words on a decontextualized…

The basic form of the superlative suffix in German is -"st (kleinst"-), with some adjectives requiring a longer form, -"est (lautest"-). While the superlative has long been a topic in teaching materials, the accuracy of textbook treatments continues to be less than satisfactory. The difficulty arises in characterizing the…