Language choice and code-switching are commonplaces for peer interaction among bilingual children from various language backgrounds in Hong Kong. However, few studies concern these linguistic practices of immigrant children proficient in Mandarin and English. This study adopted a qualitative research approach to investigate three Mandarin-English preschoolers’ language choice and code-switching by analyzing their conversations in interaction with a Cantonese–English bilingual peer under the framework of translanguaging. The findings reveal that these Mandarin-English preschoolers’ priority language for interaction is English, indicating that choosing a shared language is an essential communicative strategy for integrating with their Cantonese–English peers. The factors for those language choices include social environment, interlocutor’s ability, and sense of identity and belonging. Both inter-sentential and intra-sentential code-switching are adopted in verbal interaction. However, intra-sentential code-switching occurs more frequently and with greater diversity in Mandarin-based sentences, where nouns are the most easily switched component, followed by verbs and adjectives. This study enriches the study of bilingual children in Hong Kong, extends the application of translanguaging to peer interaction outside the classroom in multilingual contexts, and provides pedagogic implications. Copyright © 2024 Informa  UK  Limited, trading as Taylor & Francis Group.

This study examined the use of first language in English reading lessons and the perceptions of teachers and students towards it in three Hong Kong Chinese-medium secondary schools. The data comprised three teachers and sixty-three Form 2 students' participation and responses in (i) 3 classroom observations about how L1 was used in actual teaching and learning settings, (ii) survey forms gathering the frequency of participants using L1 teaching and learning strategies (based on the three teachers and nineteen selected students from the pool), and (iii) subsequent in-depth interviews concerning their perceptions about using L1 in English reading lessons. The findings revealed that (i) the use of L1 bottom-up language focused teaching strategies and condition-oriented teaching and learning strategies were effective for teaching and learning in English reading lessons and (ii) there was a negative relationship between students' proficiency in English and the use of L1. The study concluded that the use of first language in English reading lessons brought positive effects on the second language learning in English reading, especially when students' English proficiency and teaching contexts were taken into consideration. Copyright ©International Journal of Instruction.