例如：My younger sonis five and my elder sonis nine。我的小兒子5歲，大兒子9歲。 Tom is two years older than I.湯姆比我年長兩歲。
elder在句中只用作定語，不作表語；older兩者皆可。例如： My elder sister does her homework all by herself. 我的姐姐獨自做作業。 Hiselder songot married last week. 他的長子是上星期結婚的。 I think hismother is older. 我認為他的母親年齡大引起。
elder只能用來指人；older既可修飾人，也可修飾修物。例如： My elder brother joined the army when he was only fifteen.我哥哥年僅15負就參了軍。 Thisdog is older than any other dogs here.這條狗在這裡是最老的一條。 I have a sister older than myself.我有位比我大的姐姐。 It is said MrChenis over ten years older than Mrs Li.據說陳先生比李女士大10多歲。
這兩個詞均是old的比較級。在用法上有所區別。 elder表示“前輩的”、“年紀較長的”，僅用於同一家庭成員的比較；older則不限於此。
例如：My younger sonis five and my elder sonis nine。我的小兒子5歲，大兒子9歲。 Tom is two years older than I.湯姆比我年長兩歲。
elder在句中只用作定語，不作表語；older兩者皆可。例如： My elder sister does her homework all by herself. 我的姐姐獨自做作業。 Hiselder songot married last week. 他的長子是上星期結婚的。 I think hismother is older. 我認為他的母親年齡大引起。
elder只能用來指人；older既可修飾人，也可修飾修物。例如： My elder brother joined the army when he was only fifteen.我哥哥年僅15負就參了軍。 Thisdog is older than any other dogs here.這條狗在這裡是最老的一條。 I have a sister older than myself.我有位比我大的姐姐。 It is said MrChenis over ten years older than Mrs Li.據說陳先生比李女士大10多歲。