younger sister

あのかわいい少女は私の妹です。

That pretty girl is my sister.

妹は足が長い。

My sister has long legs.

私の妹は有名だ。

My sister is famous.

彼は妹がいません。

He doesn't have a sister.

私の妹はよく泣く。

My sister often cries.

私には妹がいません。

I do not have a sister.

妹は人形で遊んでいる。

My sister is playing with a doll.

妹は２１で大学生です。

My sister is twenty-one years old and a college student.

彼女の妹はとても好き。

I like her sister very much.

彼は妹を連れて行った。

He took his sister along.