姐姐的英语表达是:elder sister,音标:英 [ˈeldə(r) ˈsɪstə(r)]美 [ˈeldər ˈsɪstər] 。如果表示堂姐或者表姐,统一用cousin表示,音标:英 [ˈkʌzn]美 [ˈkʌzn]。

例句示范:

She made liberal use of her elder sister's make-up and clothes. 

她随便把姐姐的化妆品和衣服拿来用。

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。

My little grandson is no trouble at all, but his 6-year-old elder sister is rude and selfish.

我的小孙子一点都不让人操心,但是他6岁大的姐姐却野蛮而又自私。

Clare's close resemblance to his elder sister invoked a deep dislike in him. 

克莱尔酷似他姐姐,这引起他极大的反感。

She used to play games of make-believe with her elder sister. 

她过去常跟姐姐玩扮家家的游戏。

So it was Xiao Wang's elder sister who called just now. 

刚才打电话的敢情是小王的姐姐呀!

She has an elder sister. 

她有一个姐姐。

The elder sister is called mary. 

姐姐名叫玛丽。

My cousin Mark helped me 

表兄马克帮了我。

Whereas West Germans drink wine, their Eastern cousins prefer Schnapps 

西德人喝葡萄酒,而他们东德的兄弟姐妹则喜欢喝杜松子酒。

We are cousins. 

我们是表亲。

The average European kitchen is smaller than its American cousin. 

欧式的厨房一般比美式厨房小。

His cousin was about to wed. 

他表弟要结婚了。

George ducked out of his forced marriage to a cousin 

乔治逃脱了和他表亲的包办婚姻。