He speaks English well enough to pass for a native speaker.他英语流利得使人会以为他讲本国语呢。She's a native speaker of Swahili.她的母语是斯瓦希里语。There has been an assumption in the past that anyone who is a native speaker of English is equipped to teach English.过去有种观点，就是以英语为母语的人都能够教英语。