YOU SAID:

my sister is writing the family shopping list while my mother is talking

INTO JAPANESE

私の妹は母が話している間に家族の買い物リストを書いています

BACK INTO ENGLISH

My sister is writing a family shopping list while my mother is talking

INTO JAPANESE

私の妹は母が話している間に家族の買い物リストを書いています

BACK INTO ENGLISH

My sister is writing a family shopping list while my mother is talking