While...
This structure is used to indicate doing something while doing another action.
Exemplos
音楽を聞きながら勉強します。
I study while listening to music.
テレビを見ながら食事します。
I eat while watching TV.
友達と話しながら歩きます。
I walk while talking with friends.
Verificação rápida
Eu estudo ___ ouço música.