三天以前，我在南京。 Three days ago, I was in Nanjing. Pinyin Sāntiān yǐqián, wǒ zài Nánjīng. Bopomofo ㄙㄢ ㄊㄧㄢ ㄧˇ ㄑㄧㄢˊ，ㄨㄛˇ ㄗㄞˋ ㄋㄢˊ ㄐㄧㄥ。 Where this sentence is used 以前 (yǐqián) and 以后 (yǐhòu) in Chinese grammar: before and after, past and future All Chinese example sentences
