新目标九年级上Unit 3五个课时教学课件 五个课时 Teenagers should be allowed to choose their own clothes. 1. Don’t arrive late for class. 2. Don’t run in the hallways. 3. Don’t eat in the classroom. 4. Don’t listen to music in the classrooms or the hallways. 5. Don’t fight. 2. 被动语态的构成 一般现在时的被动语态为: 主+am / is / are (not)+过去分词 Butter is made from milk. The office is cleaned every day (1)不知道或没有必要说明动作的执行者是谁,不用by+动作执行者短语 Such books are written for children. 这些书是为儿童写的。 I haven’t been told about it . 没有人告诉我这件事