关于I am 11 years old.今天有朋友说可以不可以years后面加上所有格呢?也就是years' old

I am 11 years old. I am 20 years old. I am twelve years old. I am 11 years old怎么读 I am 13 years old.John is 13 years old I am 13 years old 对13 years old提问 I am 13 years old用13 years old提问 l am years old. I am fourteen years old.提问 I am fifteen years old this__ 《if i am twenty years old I am twelve years old 英语疑问句