職業(yè)學(xué)校英語(yǔ)第四冊(cè)文PPT課件

1、第一段課文和詞組 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 started to melt. microwave 微波 makr()wev 過(guò)去式 microwaved

2、過(guò)去分詞 microwaved 現(xiàn)在分詞 microwaving engineer 工程師 endn generated 發(fā)生的den,retd high-frequency 高頻率的；高周波的haifri:kwnsi第1頁(yè)/共8頁(yè)第一段語(yǔ)法let sb do sth(讓某人做某事）let out 放掉 ; 發(fā)出 ; 泄露 ; 放走 let down 放下 ; 使失望 ; 降低 ; 放低 let alone 更別提 ; 更不用說(shuō) ; 不干涉 ; 不打擾 when the American engineer let his chocolate bar get too close to an el

3、ectronic tube that generated high-frequency radio waves,it started to melt 當(dāng)美國(guó)工程師讓他的巧克力太接近電子管產(chǎn)生高頻無(wú)線電波,它開(kāi)始融化 本句中，when引導(dǎo)了一個(gè)狀語(yǔ)從句，其中有一個(gè)用that引導(dǎo)的定語(yǔ)從句that generates high-frequency radio waves，該從句修飾tube第2頁(yè)/共8頁(yè)第二段課文和詞組IntriguedIntrigued,spencer placed,spencer placed popcorn popcorn kernels kernels near the e

4、lectronic near the electronic tubetube,soon ,soon popcorn was popping out over the lab floor.the next moring,spencer 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 decided to put the electronic tube near an eg

5、g.spencer was joined by a curiouscurious colleague,and they both watched as the egg began to shake. colleague,and they both watched as the egg began to shake.the the rapid temperature rapid temperature rise rise within the egg was causing within the egg was causing tremendous tremendous pressurepres

6、sure,the curious colleague moved in for a closer look just as the ,the curious colleague moved in for a closer look just as the eggegg exploded exploded and and splashed splashed all over his amazed face.the face of spencer all over his amazed face.the face of spencer lit up with a lit up with a log

7、ical scientific conclusionlogical scientific conclusion:the melted candy bar,the :the melted candy bar,the popcorn,and now the exploding egg,were all caused bypopcorn,and now the exploding egg,were all caused by exposure exposure t to o microwave energy.microwave energy.thusthus,if an egg can be coo

8、ked that quickly,why not ,if an egg can be cooked that quickly,why not other foods? other foods? Intrigued 好奇的；被迷住了的 ntridpopcorn 爆米花，爆玉米花 ppknkernels 核心程序，核心 knl (kernel的復(fù)數(shù)形式） tube 電子管 tjub 過(guò)去式 tubed 過(guò)去分詞 tubed 現(xiàn)在分詞 tubing curious 好奇的 kjrs 比較級(jí) more curious 最高級(jí) most curioustremendous 極大 trmends 比較級(jí)

9、more tremendous 最高級(jí) most tremendousexploded 爆炸了的 kspldd （explode的過(guò)去分詞）splashed 散點(diǎn) spltlogical 合邏輯的 ldk()l 比較級(jí) more logical 最高級(jí) most logical scientific 科學(xué)的 santfk 比較級(jí) more scientific 最高級(jí) most scientific conclusion 結(jié)論 knklu()nexposure 暴露 ksp; ek-第3頁(yè)/共8頁(yè)第二段語(yǔ)法 decide on決定；選定 decide for 作對(duì)有利的決定；贊成做某事 dec

10、ide to do 決定做某事 the rapid temperature rise within the egg was causing tremendous pressure雞蛋內(nèi)的溫度迅速升高，造成巨大的壓力本句中，rise是名詞，the rapid temperature rise within the egg修飾rise，謂語(yǔ)是was causing tremendous pressure第4頁(yè)/共8頁(yè)第三段課文和詞組 spencer designed a spencer designed a metal metal box with a box with a holehole in

11、to which he fed into which he fed microwave power .microwave power .the energy enering the box was unable to the energy enering the box was unable to escape,thus creating an escape,thus creating an electromagnetic electromagnetic field when food was field when food was placed in the box and microwav

12、e energy fed in,the temperature of placed in the box and microwave energy fed in,the temperature of the food rose very the food rose very rapidly.rapidly.Dr.spencer had invented the microwave Dr.spencer had invented the microwave ovenoven metal metal 金屬；合金 met()l 過(guò)去式 metalled或-aled 過(guò)去分詞 metalled或-al

13、ed 現(xiàn)在分詞 metalling或-aling hole hole 洞 hl 過(guò)去式 holed 過(guò)去分詞 holed 現(xiàn)在分詞 holing electromagneticelectromagnetic adj. 電磁的 rapidly adv. rapidly adv. 迅速地；很快地；立即 rpdl 第5頁(yè)/共8頁(yè)第四段語(yǔ)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 work on spencers hot new idea,developing and refinin