1.younger 更年轻的,  older 更年老的,  younger brother 弟弟,  

  younger sister 妹妹,  older brother 哥哥,  older sister 姐姐,  

  parents 父母,  grandparents (外)祖父母,  teacher 老师,  

  student 学生,  doctor 医生,  police officer 警察.

2.Who is he/she? 他/她是谁?

   He/She is …….. He/She is my ………. 

   他/她是......., 他/她是我的 .......

   Who is he?

   He is Lee. He is my older brother.

   He is Bruno. He is my younger brother. 

   Who is she?

   She is Amanda. She is my older sister.

   She is Christina. She is my younger sister.

3.Who are they? 他们是谁

   They are my ………. 他们是我的……..

   Who are they?

   They are my parents.

   They are my grandparents.

   They are my uncle and aunt.

   They are my older brother and younger sister.

   They are my older sister and younger brother.