This is my sister, and her name is Lily.

这是我的妹妹，她的名字叫莉莉。

同一单元的其他句子

• This is my sister, and she is very kind.这是我的妹妹，她非常善良。
• Is that your brother in the photo?照片里那是你的哥哥吗？
• My mother and father are both teachers.我的爸爸妈妈都是老师。
• These are my cousins from Canada.这些是我从加拿大来的表兄弟姐妹。
• Who is that woman next to your dad?你爸爸旁边的那个女人是谁？