北京初三(15册)英语课件.ppt

microwave oven wave like -- dislike happy--- unhappy We put the food in the oven. We programme the oven for the time and switch (turn) it on. Then we take the food out from the oven. How to use a microwave oven? Lesson 13 The food is placed in the oven. Task 1: Read 1st paragraph, find out the answers and then write them on your paper. (according to the dialogue) 1) Is it easy or difficult to use a microwave oven? 2) Whats the first thing to do when you use a microwave oven? 3)Then what follows? It is easy to use a microwave oven. The food is placed in the oven. The oven is programmed for the correct time and then switched on. Task 2:Try to complete the chart and then write your sentences on the paper. The food is placed The oven The food in the oven for the correct time in the oven from the oven on the table is program- med is switched on is heated is taken out is served Read next paragraphs quickly, then tell us they are talking about ______________ A. how to use a microwave oven. B. how a microwave oven works and its advantage. C. appearance (size and color) of the microwave oven. B Read again, then answer these questions: Microwave ovens use microwaves to heat food. Because all the food is heated at the same time. No, they wont What are turned into heat? Microwaves are turned into heat. 1) What do microwave ovens use to heat food? 2) Why can microwave ovens cook food quickly? 3) If you put plastic or glass in a microwave oven, will they get hot? 塑料 Topic of the whole passage Main idea of the 1st paragraph Main idea of the 2nd paragraph Main idea of the rest(剩 下的 ) of the passage Task 3. A Can you complete this form according to this passage? microwave ovens how to use a microwave oven how a microwave oven works the advantages of a microwave oven The food is placed in the oven. The oven is programmed for the correct time . The oven is switched on. and switched on. The food is heated in the oven. The food is taken out from the oven. The food is served on the table. The food is heated in the oven and then taken out from the oven and served on the table. The microwaves are turned into heat. We put the food in the oven. We programme the oven for the time and switch it on. We take the food out from the oven The food is placed The oven is programmed (is) switched on. and (is) taken out The food is heated and (is )served e put the food We take the food the oven switch 当我们强调某个动作 ,而不强调动作的执行者时 , 我们使用被动语态。

我们不知道动作的执行者时， 我们也可以用被动语态 被动语态 : 被动语态 一般现在时结构 : am 主语 +is/are +过去分词 Task 3. B Try to complete the sentences: How to use The food ________(place) in the oven. The oven____(programme) for the correct time and then_______(switch) on. The food______(heat) and then____(take) out of the oven and____(serve) on the table. How to work Microwave oven______(use)microwaves to heat food. The microwaves______(absorb) by the food and they_________(turn) into heat. Advantage Microwave ovens____(cook)the food quickly, because the food ____(heat) at the same time. is placed is programmed switched on is heated taken served use are absorbed are turned cook is heated 。