Did anyone ever greet (问候) you like this: "Kaltxì. Ngaru lu fpom srak?" Probably not. These words mean "Hello. Are you well?" in Na'vi. And there are more sentences like "Nga za'u ftu peseng? (Where do you come from?)", "Fyape syaw fko ngar? (What are you called?)" and "Ngari solalew zìsìt apolpxay? (How old are you?)".

The story begins with the movie, Avatar. James Cameron was the director. For this movie, he invented a world called Pandora, in which beautiful plants and amazing animals and nine-foot-tall blue aliens were created. These aliens were the Na'vi people. Cameron wanted one more thing: a special language for the Na'vi.

Soon Cameron created about 30 words, but they weren't enough. He needed help with the project, so he asked Paul Frommer, a professor at the University of Southern California, who studies languages. First, Frommer thought about the sounds. He chose 20 consonants (辅音) and 7 vowels (元音). These are sounds in English, too. Next, he created rules of grammar. For example, in Na'vi, the word order is not important. Finally, he created a vocabulary of about 1,000 words. He finished the project in six months.

Then Frommer taught Na'vi to the actors. They had special language classes. Frommer also recorded the Na'vi language. The actors listened to it on their iPods. He translated four songs from English to Na'vi, too. He helped the singers with the pronunciation. Soon the film crew (工作人员) started to speak in Na'vi. Sometimes someone made a mistake. Then other people laughed and said, "Skxawng!"