导学案 Unit 4 Lesson 13 The food is placed in the oven一 填信息词1)In a microwave oven, _ are absorbed by_.2)_are turned into heat, when they are absorbed.3) _are not absorbed by_.4) In a microwave oven, _is heated at the same time.二 总结一般现在时被动语态的结构四框词填空put, wash, hang, switch, take, programme, useHow does a washing machine work ?Washing machines _ by millions of people every day. They are very easy to use. First the dirty clothes and the powder (洗衣粉）_ in the machine. Then the machine _for the correct time and after that it _ on. The clothes _ for some time and then they _ out of the machine. At last the clean clothes _ up on the clothes line outside . Very easy.五作文1