For instance,even native speakers are often not sure when to use "lie" and when to use "lay."

VOA: special.2010.02.11

They wanted to study how non-native speakers pronounce different sounds.

VOA: special.2011.08.04

At Indiana University in Bloomington, sixty percent of students who use the Office of Writing Tutorial Services are non-native English speakers.

VOA: special.2009.04.16

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

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

The other half are native English speakers.

VOA: special.2010.06.17