Translating helps us to know our mother tongue better.

You cannot learn too much about your own language.

She speaks English as if she were a native speaker.

She is a native speaker of French.

She doesn't even speak her own language well, let alone French.

He was raised in the States, but his mother tongue is Japanese.

He speaks English like a native.

To hear him speak English, you would take him for a native.

Japanese is our mother tongue.

My mother tongue is Japanese.

Brent is an American, but he speaks Japanese as if it were his mother tongue.

French is her mother tongue.

French is their mother tongue.

The author translated the fairy tale into our mother tongue.

The foreigner spoke Japanese as if it were her mother tongue.

Not all Americans speak English as their mother tongue.

Spanish is her native language.

Spanish is her native language.

Julia's native language is Italian.

This book is for students whose native language is not Japanese.