Non-native English speakers take the test to demonstrate their English skills when seeking a new job or a promotion.

VOA: special.2010.02.18

Other languages don't have that distinction and so those distinctions are very difficult for non-native English speakers to learn.

其他语言并没有这样的差别,所以非英语母语的说话者,很难发现这些差别

耶鲁公开课 - 心理学导论课程节选

And then there's also high demand for English speakers,

另一方面，英语为母语的人也有极大的需求，

旧金山的公立教育 - SpeakingMax英语口语达人

Graduate tutor Lars Soderlund says non-native English speakers generally have some trouble with English grammar.

VOA: special.2009.04.30

It includes resources that can help non-native English speakers.

VOA: special.2010.02.11

English speakers just started using it.

VOA: special.2011.01.12

Look for English speakers to talk to.

VOA: special.2009.01.15

The other half are native English speakers.

VOA: special.2010.06.17

English is becoming the common language of millions of people worldwide, helping speakers of many different languages communicate.

VOA: special.2011.01.12