How old is your ( ) sister?She is 17 years old.She is three years_英语解答

How old is your ( ) sister?She is 17 years old.She is three years ( ) than me.填 elder 和 older
并翻译这句话，再请讲明为什么？

人气：472 ℃　时间：2019-08-19 00:29:37

解答

年纪大小用 elder,
具体岁数用 older.
所以第一个用elder,第二个用older