Question

Quick answer for the role of americian in english language development?

Answer 1

Despite a growing US literature on educating English learners (ELs) and an upsurge in studies of vocabulary interventions,1 surprisingly little research examines the effects of instruction on ELs' English language development (ELD). Since the Supreme Court's 1974 Lau v. Nicholsdecision affirming that English learners must be guaranteed a "meaningful education," controversy over bilingual versus English-only education has dominated research and policy discussions of ELs. Many of the programs involved in these studies included ELD instruction, but studies sought to measure the effects of the program on academic achievement, primarily reading, rather than estimating the effects of ELD instruction on English language acquisition.

This article synthesizes research that provides guidelines for ELD instruction. Many resources, such as theory, ELD standards, practitioner experience, and published programs, might provide such guidance. We focus on individual studies and research syntheses that point to how educators might provide effective ELD instruction—instruction that focuses specifically on helping English learners develop English language skills and that is delivered in a portion of the school day separate from the academic content that all students need to learn.
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Answer 2

well the american are the language development....because the English is the important language in the world..and the americans speak english fluently and this helps in developing language........