My grandfather is old.

我爷爷老了。

同一单元的其他句子

• This is my family photo.这是我的全家福。
• My father is a doctor.我爸爸是一名医生。
• My mother is a teacher.我妈妈是一名老师。
• I have a little sister.我有一个小妹妹。
• My brother is tall.我哥哥很高。