He left home at sixteen.

　　他十六歲時(shí)離家獨(dú)立生活。

　　The last time I saw her was about sixteen years ago

　　我上次見她大約是16年前了。

　　Sixteen teams are taking part, divided into four groups

　　有16個(gè)隊(duì)參加，分為4組。