根据所给教学内容，设计一个课堂活动（英语表述)。
说明：在听说课型中role-play部分非常重要，请根据所给材料（一节课的内容）为 2d 部分设计一个活动，体现真实的课堂操练过程。请注明：
（1）本项活动的时间安排；
（2）各步骤内容（简洁明了）。
以下材料来自人教版初中英语教材， Go for it: Grade 9 ， Unit 9 ， Section A: I like music that I can dance to. (详见附件二）
附件二
Speaking Activities
Step 1: Video Playing (15 minutes)
Show students two kinds of film clips, one comedy and the other tragedy. Ask students to pay special attention to the plot and characters in the film.
Step 2: Group Discussion (10 minutes)
Have students talk about the one that is more preferred with the adequate reasons. Invite some students to expound their viewpoints.
Step 3: Role Play (15 minutes)
Ask students to work in pairs to make up a dialogue about inviting friends to see the movie together. The conversation may contain some basic information such as the name of the movie, the place and the time. After full preparation is made, randomly select several students that belong to different groups to perform the dialogue in front of the whole class.
Step 4: Evaluation (5 minutes)
Make an evaluation of students, performances, invite the whole class to vote for the best one, and give some rewards to the best performers.