我昨天在食堂吃饭了。 Yesterday I ate in the canteen. Traditional 我昨天在食堂吃飯了。 Pinyin Wǒ zuótiān zài shítáng chīfànle. Bopomofo ㄨㄛˇ ㄗㄨㄛˊ ㄊㄧㄢ ㄗㄞˋ ㄕˊ ㄊㄤˊ ㄔ ㄈㄢˋ ˙ㄌㄜ。 Where this sentence is used Past events in Mandarin Chinese grammar (there's no past tense!) All Chinese example sentences