你在北京都干嘛了? What did you do in Beijing? Traditional 你在北京都幹嘛了? Pinyin Nǐ zài Běijīng dōu gànmá le? Bopomofo ㄋㄧˇ ㄗㄞˋ ㄅㄟˇ ㄐㄧㄥ ㄉㄡ ㄍㄢˋ ㄇㄚˊ ˙ㄌㄜ? Where this sentence is used Using 嘛 (ma) in Chinese grammar: stating the obvious and describing expectations All Chinese example sentences