French is her mother tongue.
- Le français est sa langue maternelle.
Brent is an American, but he speaks Japanese as if it were his mother tongue.
- Brent est Américain, mais il parle japonais comme si c'était sa langue maternelle.
Hebrew is my native tongue.
- L'hébreu, c'est ma langue maternelle.
I hate my native tongue.
- Je déteste ma langue maternelle.
She speaks English as if she were a native speaker.
- Elle parle anglais comme si c'était sa langue maternelle.