Unit The world of colours and light 全国公开课一等奖

WordpowerPaintingsUnit3TheworldofcoloursandlightRainbowSong

Redandyellowandpinkandgreen,

Orangeandpurpleandblue.

Icansingarainbow;singarainbow,

Singarainbowsong.Whatothercolorsdoyouknow?black黑色white白色

brown咖啡色

grey灰色

pink粉红purple紫色cyan

青色

[5saiEn]magenta洋红[mE5dVentE]palegreen苍绿色yellowgreen黄绿色Manycolourshavedifferentshades,likelightblueanddarkblue.Oftenthenamesoftheseshadesarethesameastheobjectsthatareofasimilarcolour.

plum杨李色

pansy紫罗兰色

peachpuff桃色

papayawhip番木色

rosybrown褐玫瑰红

springgreen春绿色

1.sandybrown

2.seagreen

3.seashell

4.winered

5.silver

6.snow

7.skyblue

8.steelblue9.tomato

10.wheat

沙褐色

海绿色

海贝色

葡萄酒红

银白色

雪白色

天蓝色

钢蓝色番茄色

浅黄色

Lookatthefollowingwordsandguessthecoloursbelow.

rose

cherrylemon

olivegreenseagreen

[5lAvindE]lavenderchocolate

limea.玫瑰红b.樱桃红c.柠檬黄d.橄榄绿,茶青色

e.海绿色f.淡紫色h.深褐色i.酸橙色12345678

1rose

2cherry3lemon

4olivegreen5seagreen

6lavender7chocolate

8limeColorsusedinpressingMostofthecolorsweseeprintedaremadeupofamixofshades,orscreen,ofthefourprocesscolors:Cyan,Magenta,YellowandBlack.BelowareexamplesofhowCyanink,Magentaink,YellowinkandBlackinkcombinetocreateothercolors:CMY

B

ALLINKS

100%CYAN

-100%YELLOW

-

GREEN

100%CYAN

-100%YELLOW25%BLACK

DARKGREEN

-

100%MAGENTA100%YELLOW

-

RED

-

100%MAGENTA

100%YELLOW25%BLACK

DARKRED

100%CYAN

50%MAGENTA

-

-

BLUE

50%CYAN75%MAGENTA

100%YELLOW

-

BROWN

45%CYAN

30%MAGENTA

30%YELLOW

-

GRAYTakegreen,above,asanexample.Ifweadd25%magentatoit,itwillbecomeforestgreen.Ifwetakeouthalfthecyan,itwillbecomelimegreen.Ifwetakeouthalftheyellow,itwillbecometurquoise.Evenaddingorsubtractingaslittleas1or2percentofoneoftheinkscanchangethecolornoticeably.Inprocessprintingonpaper,howislastphotocomposed?

CyanMagentaYellowBlackEachofthefourcolorsyouseeabovewillbeoutputtoaseparatenegative,burnedontoseparateplates,andinkedonseparaterollersonthepress.Afterthepaperhasbeenimpressedwitheachinkedplate,thecomposedimagewillappear,infullcolor.Whathappens?Colorsusedinpainting?Whatpaintingmaterialsapaintermayuse?watercolorcanvas[5kAnvEs]pencilspaintbrusheseasel[5i:zl]palette

[5pAlit]oilpaints1234567Whataretwomaintypesofpainting?Howcantheybedone?Examplesofwatercolorandoilpainting?ReadPartAonPage38watercoloroilpaintingportraitlandscapestilllife

LiMinghasdecidedtotakeuppaintingasahobby.HefoundsomeadviceontheInternetaboutstartingtopaint.Someofthewordsdidnotprintoutproperly.UsethewordsfromPartsAandBtocompleteit.(1)watercolour(2)oil(3)pencils(4)paper(5)canvas(6)easel(7)palette(8)portrait(9)stilllife

Furtherdiscussion:Illustrateapaintingtotheclass

…typeofpaintingcolorsofpaintingstyleofpainting…LanguageFocus1.Thepaintisverythickandthesecrettooilpaintingistobuilduplayeronlayeronacanvas.1)积聚;聚集

Trafficisbuildingupalongtheroadstothecoast.Onedayyourbookswillbuildupintoalibrary.2)增进；加强：发展体育运动,增强人民体质。

Promotephysicalcultureandbuildupthepeople'shealth

艰苦的工作条件能磨练人的性格。

Hardworkingconditionsbuildupcharacter.(喻)

增强体力

tobuildupone'sstrength

我们的生意兴隆。

Wearebuildingupagoodbusiness.Thevillagehasbeen____sinceIlivedhere.builtupbuiltonbuiltinbuiltinto2.Asofteraserwillalsobeneededincaseyoumakeamistake.以防万一,免得

incase

作短语连词，能引导状语从句;incase作副词性短语，常置于句末.

incaseof

置于句末常看作目的状语，作“以免，

以防”解；置于句首常视为条件状语，作

“如果，万一”解.

1)Thewallwasbuiltalongtheriverincaseoffloods.

2)Youshouldkeepafirst-aidkitinthecarincase

ofaccident．

3)万一有火灾,就拨119.Incaseoffire,call119.4)你最好带点钱,以防万一

Youhadbettercarrysomemoneyincase.inthecaseof，就...来说,关于inanycase无论如何innocase决不inthis/thatcase在这种/那种情况下1.Johnmayphonetonight．Idon'twanttogoout____hephones．（NMET2000，春季）

A.aslongas

B.inorderthat

C.incase

D.sothat

2.Ishouldstayinthehotelallday_____thereisnewsofthemissingchild．(NMET2000上海春季）

A.incase

B.nomatter

C.inanycase

D.evensince

3.Idon'tthinkI'llneedanymoneybutI'llbringsome____．（NMET2000）

A.atlast

B.incase

C.onceagain

D.intime物理三元色(红,绿,蓝)的与美术三元色(红,黄,蓝)光的三元色为：红、绿、兰，混合后为白色

颜料的三元色为：红、黄、兰，混合后为黑色

不同，光混合成无色，颜料混合成黑色。

不同，光混合是加法原则，颜料是减法原则。前者相加变亮，后者混合变暗。

彩色电视以及绘画、油漆、彩印、摄影等都要涉及到色光的混合与颜料的混合．为什么彩色电视利用的是红、绿、蓝三原色（基色）的混合，而绘画、彩印等颜料的混合却利用的是红、黄、青三原色（平常所说颜料三原色是红、黄、蓝是不确切的）？为什么旋转的七色盘的混合色为白色，而七色颜料的混合色却为黑色？Reference:black黑色 brown