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

 ● teachingobjectives

 ● teachingcontents

 ● key anddifficult points

 ● major stepsand time allocation

 ● activitiesand justifications

 教学时间：20分钟

 学生概况：某城镇普通中学初中一年级第二学期学生，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：

Conversation 1

Tom: Hey，Peter.

Peter: Hi．Tom.

Tom: How's the weather down there in Shanghai?

Peter: it's cloudy. How's the weather in Moscow?

Tom: It's snowing right now.

 Conversation2

Peter: Hi Aunt Sally.

Aunt 8ally: Hello,Peter.

Peter: How's the'weather in Boston?

Aunt Sally: Oh, it's windy.

Conversation 3

Peter: So, how's the weather in Beijing?

 Julie:It's sunny.

Conversation 4

Peter: Hi,Uncle Bill.

Uncle Bill: Hello, Peter.

Peter: How's the weather in Toronto?

  UncleBill: It's raining, as usual!