Interlanguage can affect pedagogy by influencing the way teachers design instruction to address errors and facilitate language development. Understanding learners' interlanguage can help teachers provide more targeted feedback and create activities that build on students' existing linguistic knowledge. By acknowledging and working with interlanguage, educators can better support language learners in their journey towards proficiency.

SLA research on interlanguage suggests that it is a dynamic system that learners develop as they attempt to communicate in a second language. Interlanguage is seen as unique to each learner and is influenced by factors such as native language transfer, communication strategies, input quality, and frequency of language use. Researchers emphasize the importance of understanding and addressing learners' interlanguage in teaching and assessment.

Interlanguage refers to a language system that emerges when a person is in the process of learning a second language. It is a dynamic and evolving system that combines elements of the learner's native language and the target language. Interlanguage is seen as a transitional stage that learners pass through on their way to achieving full proficiency in the target language.

A newer look at the interlanguage link

Jianfu Liu has written:

'Measuring interlanguage pragmatic knowledge of EFL learners' -- subject(s): English language, Study and teaching, Rhetoric, Ability testing, Chinese speakers, Research, Interlanguage (Language learning), Methodology, Language and languages