the baby is one and a half _____ (year)old

问题描述:

the baby is one and a half _____ (year)old

the baby is one and a half __years_ (year)old
【释义】这个婴儿一岁半大.
【解析】
不足1的名词,用单数(多指分数);
大于1的名词,用复数;