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untried where English is an official or de facto official language, or national language, and is spoken fluently by the majority of the population
US (57.3%)
UK (16.3%)
Canada (4.9%)
Australia (4.1%)
Nigeria (1.1%)
Ireland (1%)
South Africa (1%)
New Zealand (1%)
Other (13.3%)
ESL or EFL? What do ESL and EFL mean? ESL stands for English as a Second Language. EFL stands for English as a Foreign Language. ESL is used when people learn English in an English speaking country. EFL is used when people learn English in a non-English speaking country. Is this important? Not very, if you are a student. But there are some important technical considerations for teachers.