UNIT 1 Hello Again!再次相见! Lesson 2 Friends 朋友 1.Boy and girl男孩和女孩 This is Jenny.这是珍妮. She is a girl.她是女孩. She is my friend.她是我的朋友. This is Danny.这是丹尼. He is a boy.他是男孩. He is my friend.他...