设计任务：
请阅读下面学生信息和语言素材，设计20分钟的口语教学方案。教案没有固定格式，但须包含下列要点：

教学时间：20分钟
教学时间：20分钟
学生概况：某城镇普通中学七年级（初中一年级）学生，班级人数40人。多数学生已经达到《义务教育英语课程标准（2011年版）》二级水平。学生课堂参与积极性一般。
语言素材：
Ms Li: Hello, my name is Li Fang. I'm your teacher and you are my students.I'm Chinese.I'm from Wuhan. What's your name?
Lingling: My name is Wang Lingling.
Ms Li: Nice to meet you, Lingling. Where are you from?
Lingling:I'm from Beijing.I'm Chinese.
Ms Li: How old are you?
Lingling:I'm thirteen years old. Ms Li: Good. Hello, what about you?
Daming: Hello, Ms Li, my name is Li Daming and I'm from Beijing, too.I'm twelve years old.
Ms Li: Thanks. Hello, are you from America?
Tony: No,I'm not.I'm from England.I'm Tony Smith.
Ms Li: Nice to meet you, Tony. Hi, are you English, too?
Betty: No, I'm not. I'm American and my name is Betty King.
Lingling: Tony and Betty are our friends.
Ms Li: Good! Welcome to Class 4 Grade 7!