职业学校英语第四册第四单元课文

• conclusion 结论
[kən'kluːʒ(ə)n]'spəʊʒə; ek-]
4
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
• spencer designed a metal box with a hole into which he fed microwave power .the energy enering the box was unable to escape,thus creating an electromagnetic field when food was placed in the box and microwave energy fed in,the temperature of the food rose very rapidly.Dr.spencer had invented the microwave oven
adj. 电磁的
• rapidly adv. ['ræpɪdlɪ]
迅速地；很快地；立即
6
第四段语法
• make use of 使用，利用 • in use 在使用中 • use in 用于；…的效用 • use for 某物有什么作用；用于…
• engineers went to work on spencer's hot new idea,developing and refining it for practica use
• splashed
散点
[splæʃt]
• logical
合逻辑的
['lɒdʒɪk(ə)l] [ 比较级 more logical 最高级 most logical ]
• scientific
科学的
[saɪən'tɪfɪk] 比较级 more scientific 最高级 most scientific ]
unit4
The invention of the microwave oven
——课文语法
1
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
• 工程师们开始忙于斯宾塞的这个新主意，对之进 行开发和完善，使之能够具有实际用途
• 本句中developing and refining it for practical use是伴随状语，其中的its指代 spencer’s hot new idea.
7
The end,thank you!
8
• electronic tube that generated high-frequency radio waves,it started to melt.
microwave 微波 ['maɪkrə(ʊ)weɪv] 过去式 microwaved 过 去分词 microwaved 现在分词 microwaving ] engineer 工程师 [endʒɪ'nɪə] generated 发生的['dʒenə,reɪtɪd] high-frequency 高频率的；高周波的['hai'fri:kwənsi]
• Intrigued
好奇的；被迷住了的 [ɪn'triɡd]
• popcorn
爆米花，爆玉米花 ['pɒpkɔːn]
• kernels
核心程序，核心
['kɝnl] (kernel的复数形式）
• tube
电子管
[tjuːb] 过去式 tubed 过去分词 tubed 现在分词 tubing
• curious
• metal
金属；合金
• ['met(ə)l][ 过去式 metalled或-aled 过去分词 metalled或-aled 现在分词 metalling或-aling ]
• hole
洞 [həʊl] [ 过去
式 holed 过去分词 holed 现在分词 holing ]
• electromagnetic
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 pressure
5
第三段课文和词组
2
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 the American engineer let his chocolate bar get too close to an electronic tube that generated highfrequency radio waves,it started to melt
好奇的
['kjʊərɪəs] 比较级 more curious 最高级 most curious
• tremendous 极大
[trɪ'mendəs] 比较级 more tremendous 最高级 most tremendous
• exploded
爆炸了的
ɪk'spləʊdɪd] （explode的过去分词）
• 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
3
第二段课文和词组
• Intrigued,spencer placed popcorn kernels near the electronic tube,soon popcorn was popping out over the lab floor.the next moring,spencer decided to put the electronic tube near an egg.spencer was joined by a curious colleague,and they both watched as the egg began to shake.the rapid temperature rise within the egg was causing tremendous pressure,the curious colleague moved in for a closer look just as the egg exploded and splashed all over his amazed face.the face of spencer lit up with a logical scientific conclusion:the melted candy bar,the popcorn,and now the exploding egg,were all caused by exposure to microwave energy.thus,if an egg can be cooked that quickly,why not other foods?