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?

问题描述:

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?

elder
older

第一个填elder ,你较大的姐姐多大了?
第二个天older,她比我大3岁。

elder, older

elder
older

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