elder
单词辨析：
〔辨析〕
一般只用于人，尤指兄弟或姐妹中较年长的，只作定语，不与 than 连用。
〔例证〕
She is my elder daughter.
她是我的大女儿。
His elder brother/sister works in a clothing factory.
他的哥哥/姐姐在一家服装厂工作。
〔辨析〕
普通用词，可用于人或物，表示人们的年纪长幼或事物的新旧关系，多用作表语，可与 than 连用。
〔例证〕
I am three months older than Tom.
我比汤姆大3个月。
This house is older than that one.
这栋房子比那栋房子老。
相关例句：
The person you saw yesterday was not her, but her elder sister.
昨天你看见的不是她，（而）是她姐姐。
The elder son is the cook of the walk.
长子是掌权的人。
Jane: I have one younger brother and an elder sister.
简：我有一个弟弟和一个姐姐。
Which is the elder of the two sisters?
两姐妹中哪个是姐姐？
This is my elder sister.
这是我的姐姐。
He was in his late eighties and had become the country's most respected elder statesman.
他年近九旬，已成为该国最受尊崇的政界元老。