I am four years old at home,and two and a half in a bus and

I am four years old at home,and two and a half in a bus and Four years old at home,Two and a Half in Buses and Trains短文翻 Why is the boy four years old at home but two and a half on I am four years old at home and two on the bus.什么意思?这小孩到底几岁? - years ago ,I came to the USA.Two and a half Two and half a some two-and-a-half years and two novels later,^^^^^^ 英语翻译I am twelve years old,and I am in Grade Six now.I have a two and a half two years and a half=two and a half years吗? two years and a half 或者two and a half years two years and a half 还是two year and a half two hours and a half