内容正文:
Unit 6 Colours, Colours
Lesson 20 Magic Colours
基础练
一、选词填空。
orange blue Pink black green
1.Let's mix red and __________.Wow.It's purple.
2.The sun is __________.It's warm.
3.The grass turns __________ in spring.
4.Let's mix orange and green.Oh,it's __________ now.
5.__________ is the colour of flowers.
二、【新题型·学科融合】光学中将红、绿、蓝定义为光学三原色,把它们叠加在一起能够变出很多神奇的颜色。根据图片提示填一填。
1. + green = yellow
2. red + = purple
3. + blue = cyan(青色)
4. red + green + blue =
三、【新情境·生活运用】根据图片,判断对话描述的内容是否符合生活实际,符合的画“”,不符合的画“”。
1.—What colour is the ? —It's green.
2.—What colour are the ? —They're orange.
3.—What colour is the ?—It's pink.
4.—What colour is the ?—It's black.
5.—What colour is the ? —It's colourful.
提升练
四、根据所给情景,选择合适的句子。
( )1.当你想问对方它是什么颜色时,你可以说:__________
A.What is that? B.What colour is it?
( )2.当你想告诉别人它是橙色时,你可以说:__________
A.It's orange. B.That is an orange.
( )3.当你想告诉别人红色加蓝色是紫色时,你可以说:__________
A.Red and yellow make orange. B.Red and blue make purple.
( )4.当你想告诉别人蓝色加黄色是绿色时,你可以说:__________
A.Blue and yellow make green. B.Yellow and red make orange.
五、为下列句子选择合适的答语。
( )1. What colour is this? A. I see some red flowers.
( )2. What do you see? B. It's yellow.
( )3. Let's mix red and yellow. C. What a colourful world!
( )4. The sky is blue. The trees are green. D. Wow! It's orange.
六、【新题型·新情境】从方框中选择恰当的句子,补全对话。
Miss Wang:1. __________
Sara: It's yellow.
Miss Wang: How about this colour?A. That's magic!
B. It's red.
C. Let's mix yellow and red.
D. Look, what colour is this?
Lingling: 2. __________
Miss Wang:3. __________ What colour is this now?
Lingling: Wow! It's orange now. The sun is orange.
Sara: 4. __________
拓展练
七、阅读并补全短文,每空一词。
Hi, let's mix colours together. Red and blue make 1.. Red and 2. make orange. Blue and yellow make 3.. Red, blue and yellow make 4.! Now, we are black bears.
八、阅读短文,判断句子正(T)误(F)。
Oh! There are so many animals. One orange cat is under(在……下面)the desk. Two yellow cats are beside(在……旁边)the chair. Four black and white birds are in the cage(笼子). One black cat is on the bed. Three brown dogs are on the desk. What a colourful animal world!
( )1. The cat under the desk is orange.
( )2. There are two yellow dogs beside the chair.
( )3. The birds are black and white.
( )4. There are three black dogs on the desk.
( )5. Two black cats are on the bed.
九、【新题型·新情境】三原色人们将三原色分为光学三原色以及色彩三原色。之前我们学习了光学三原色,现在我们一起来看看将色彩三原色混合可以成为什么颜色吧。读对话,选择正确的选项。(可重复选择)
A. B. C. D. E.黑色
蓝色
黄色
橙色
红色
1.A: Look. This is red. What colour is it?
B: It's yellow.
A: Let's mix red and yellow. What colour is it now?
B: Wow. It's orange.
2.A: Look. This is red. What colour is it?
B: It's blue.
A: Let's mix red and blue. What colour is it now?
B: Wow. It's purple.
3.A: Look. What colours are they?
B: They're red, yellow and blue.
A: Let's mix red, yellow and blue. What colour is it now?
B: Wow. It's black.
参考解析
基础练
一、1. blue 2. orange 3. green 4. black 5. Pink
1.由最后得到的颜色是紫色可推断出红色 和蓝色混成紫色,故填blue.
2. sun意为“太阳”,太阳的颜色是橘色的, 故填orange.
3. grass意为“草”,草在春天变成绿色,故 填green.
二、1.red + green = yellow解析:红(red)和绿(green)叠加呈现黄色(yellow),对应图中红与绿的重叠区域。
2.red + blue = purple解析:红(red)和蓝(blue)叠加呈现紫色(purple),对应图中红与蓝的重叠区域。
3.green + blue = cyan(青色)解析:绿(green)和蓝(blue)叠加呈现青色(cyan),对应图中绿与蓝的重叠区域。
4.red + green + blue = black(或 white,根据光的混合性质)解析:图中红、绿、蓝三者重叠区域显示为黑色,此处结合题目图示,填black。
三、1. 2. 3. 4. 5.
提升练
四、1. B 2. A 3. B 4. A
五、1. B 2. A 3. D 4. C
1.句意为“这是什么颜色”,应该回答颜色, 故选B.
2.句意为“你看到了什么”,应该回答看到 的事物,故选A.
3.句意为“让我们把红色和黄色混合”,选 项D“哇!它是橙色的”符合语境。
4.句意为“天空是蓝色的。树是绿色的”, 选项C“多么五彩缤纷的世界啊”符合 语境。
六、1. D 2. B 3. C 4. A
拓展练
七、1. purple 2. yellow 3. green 4. black
八、1. T 2. F 3. T 4. F 5. F
1.由“One orange cat is under the desk.” 可知,在课桌下面的猫是橘色的,故此题 正确。
2. 由“Two yellow cats are beside the chair.”可知,有两只黄色的猫在椅子旁 边,而不是两只黄色的狗,故此题错误。
5.由“One black cat is on the bed.”可知, 是一只黑色的猫在床上,而不是两只黑色 的猫在床上,故此题错误。
九、1. 对话中 “red + yellow = orange”,对应选项:
第一个空填 C(黄色)
第二个空填 D(橙色)
2. 对话中 “red + blue = purple”,对应选项:
第一个空填 E(红色)
第二个空填 B(蓝色)
3. 对话中 “red + yellow + blue = black”,对应选项:
三个空依次填 E(红色)、C(黄色)、B(蓝色)
结果填 A(黑色)
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