YOU SAID:
Friday is my big brothers 5 birthday
INTO JAPANESE
金曜日は私の兄貴の5歳の誕生日です
BACK INTO ENGLISH
Friday is my big brother's 5th birthday
INTO JAPANESE
金曜日は私の兄の5歳の誕生日です
BACK INTO ENGLISH
Friday is my brother's 5th birthday
INTO JAPANESE
金曜日は兄の5歳の誕生日です
BACK INTO ENGLISH
Friday is my brother's 5th birthday
You've done this before, haven't you.