我有一个姐姐和两只猫。

I have one older sister and two cats.

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我有一个姐姐、一个妹妹、一个弟弟。

I have one older sister, one younger sister and one younger brother.

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莫菲女士说，去年在绿色田野，两个幼儿园的孩子在室外玩耍，一个单亲母亲的儿子对一个同班的孩子说他有一个姐姐。

At Green Acres last year, Ms. Murphy said, two kindergartners were playing outside when a boy, the son of a single mother, told a classmate that he had an older sister.

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