Unit 4 Topic 3 Section A The main activities are 1a and 2a. 本课重点活动是1a和2a。 Ⅰ. Teaching aims and demands 教学目标 1. Learn the new word: research 2. Help the students to learn the usage of passive voice. 3. Talk about flying to Mars and the outer space and something about the aliens. 4. Help students to learn expressing possibility and impossibility. Ⅱ. Teaching aids 教具 录音机/ 一个破损的MP3 Ⅲ. Five-finger Teaching Plan 五指教学方案 Step 1 Review 第一步 复习(时间:14分钟) 1. (复习一般过去时的被动语态。) T: Good morning. Boys and girls! (突然面色表情由晴转阴。) What happened to my MP3? It was broken.(把坏的MP3给同学们看,面带心痛神色。) Who was my MP3 broken by? (转向全体同学。) Was it broken by you, S1? (对前排的一个同学提问。) (同学们笑,然后开始猜测,教师引导学生用英语表达。) S2: Was it broken by yourself, Miss / Mr.…? T: No.