Lesson 28 Brother, Sister 第28课 兄弟,姐妹 1. This is my sister. This is my brother. 1.这是我妹妹。 这是我哥哥。 This is my sister, Lynn. 这是我的妹妹,林恩。 Her hair is very red. 她的头发很红。 She is a pretty g...