职业学校英语第四册第四单元课文

1、unit4unit4The invention of the microwave oven课文语法第一段课文和词组第一段课文和词组percy spencer had no idea what might happen when he brought candy with him into his microwave lab in 1946.when the American engineer let his chocolate bar get too close to an electronic tube that generated high-frequency radio waves,it

2、 started to melt. microwave 微波微波 makr()wev 过去式 microwaved 过去分词 microwaved 现在分词 microwaving engineer 工程师工程师 endn generated 发生的发生的den,retd high-frequency 高频率的；高周波的高频率的；高周波的haifri:kwnsi第一段语法let sb do sth(让某人做某事）let out 放掉 ; 发出 ; 泄露 ; 放走 let down 放下 ; 使失望 ; 降低 ; 放低 let alone 更别提 ; 更不用说 ; 不干涉 ; 不打扰 when

3、the American engineer let his chocolate bar get too close to an electronic tube that generated high-frequency radio waves,it started to melt当美国工程师让他的巧克力太接近电子管产生高频无线电波,它开始融化本句中，when引导了一个状语从句，其中有一个用that引导的定语从句that generates high-frequency radio waves，该从句修饰tube第二段课文和词组第二段课文和词组IntriguedIntrigued,spencer

4、 placed,spencer placed popcorn popcorn kernels kernels near the electronic near the electronic tubetube,soon popcorn was ,soon popcorn was popping out over the lab floor.the next moring,spencer decided to put the electronic popping out over the lab floor.the next moring,spencer decided to put the el

5、ectronic tube near an egg.spencer was joined by a tube near an egg.spencer was joined by a curiouscurious colleague,and they both watched as colleague,and they both watched as the egg began to shake.the egg began to shake.the rapid temperature the rapid temperature rise rise within the egg was causi

6、ng within the egg was causing tremendous tremendous pressurepressure,the curious colleague moved in for a closer look just as the egg,the curious colleague moved in for a closer look just as the egg exploded exploded and and splashed splashed all over his amazed face.the face of spencer lit up with

7、a all over his amazed face.the face of spencer lit up with a logical scientific conclusionlogical scientific conclusion:the melted candy bar,the popcorn,and now the exploding :the melted candy bar,the popcorn,and now the exploding egg,were all caused byegg,were all caused by exposure exposure t to m

8、icrowave energy.o microwave energy.thusthus,if an egg can be cooked that ,if an egg can be cooked that quickly,why not other foods? quickly,why not other foods? Intrigued 好奇的；被迷住了的好奇的；被迷住了的 ntridpopcorn 爆米花，爆玉米花爆米花，爆玉米花 ppknkernels 核心程序，核心核心程序，核心 knl (kernel的复数形式） tube 电子管电子管 tjub 过去式 tubed 过去分词 tub

9、ed 现在分词 tubing curious 好奇的好奇的 kjrs 比较级 more curious 最高级 most curioustremendous 极大极大 trmends 比较级 more tremendous 最高级 most tremendousexploded 爆炸了的爆炸了的 kspldd （explode的过去分词）splashed 散点散点 spltlogical 合逻辑的合逻辑的 ldk()l 比较级 more logical 最高级 most logical scientific 科学的科学的 santfk 比较级 more scientific 最高级 most

10、scientific conclusion 结论结论 knklu()nexposure 暴露暴露 ksp; ek-第二段语法 decide on决定；选定 decide for 作对有利的决定；赞成做某事 decide to do 决定做某事 the rapid temperature rise within the egg was causing tremendous pressure鸡蛋内的温度迅速升高，造成巨大的压力本句中，rise是名词，the rapid temperature rise within the egg修饰rise，谓语是was causing tremendous p

11、ressure第三段课文和词组第三段课文和词组 spencer designed a spencer designed a metal metal box with a box with a holehole into into which he fed microwave power .which he fed microwave power .the energy the energy enering the box was unable to escape,thus enering the box was unable to escape,thus creating an creatin

12、g an electromagnetic electromagnetic field when food field when food was placed in the box and microwave energy fed was placed in the box and microwave energy fed in,the temperature of the food rose very in,the temperature of the food rose very rapidly.rapidly.Dr.spencer had invented the microwave D

13、r.spencer had invented the microwave ovenoven metal metal 金属；合金 met()l 过去式 metalled或-aled 过去分词 metalled或-aled 现在分词 metalling或-aling hole hole 洞 hl 过去式 holed 过去分词 holed 现在分词 holing electromagneticelectromagnetic adj. 电磁的 rapidly adv. rapidly adv. 迅速地；很快地；立即 rpdl 第四段语法第四段语法 make use of make use of 使用，利用使用，利用 in use in use 在使用中在使用中 use in use in 用于；用于；的效用的效用 use for use for 某物有什么作用；用于某物有什么作用；用于 engineers went to wor