我爷爷已经七十几岁了,嘴巴里“一望无牙”,而且满头银发。年幼的我经常问爷爷:“爷爷,我的头发是黑黑的,而你的头发为什么是白白的呢?”爷爷总是笑着回答:“傻孩子,爷爷老了,头发当然是白的啦!”爷爷的头发要是和我的一样是黑的那该多好啊! My grandfather has been seventy years old, his mouth, “a toothless,” and full of silver hair. Young I often ask Grandpa: “Grandpa, my hair is dark, and why is your hair white?” Grandpa always smiled and replied: “Silly boy, grandpa is old, of course the hair is white ”Grandpa's hair should be black like mine