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(共24张PPT)
Unit 6 Electricity everywhere
主题范畴：
人与自然；人与社会
主题群：
环境保护；科学与技术
子主题：
环境污染及原因，环保意识和行为；科学技术与工程，人类发明与创造
Key question
What role does electricity play in our daily lives
understand why electricity is important.
explain different ways of producing electricity.
observe safety rules for using electricity.
talk about how to save electricity.
Unit objectives 单元目标
I can:
New words
safety n.安全；平安
instruction n.用法说明；操作指南
connect v.（使）连接
*device n. 装置；设备
electrical appliance 电器
A debate
Is electricity a good thing or a bad thing
Electricity can be both useful and dangerous. It all depends on how we use it.
Lead-in
Electrical safety tips
Speaking
Talking about using electricity safely
Talk in pairs about safety rules for using different electrical appliances. Look at the example and use the tips below to help you.
Never touch electrical appliances with wet hands.
Electrical safety tips
Make sure all cables are safe to use.
Do not use broken cables.
Electrical safety tips
Do not use broken electrical appliances.
Read the instructions carefully before you use a new electrical appliance.
Pair work
S1: We use different electrical appliances in our homes every
day. How can we use them safely
S2: We need to make sure that the cables are connected
correctly before we turn on the device. And we mustn’t
touch any electrical appliances with wet hands.
S1: That’s right! Also, we cannot use any broken cables.
...
Johnny’s father is talking to Johnny about safety at home. Work in pairs. S1 is Johnny. S2 is Dad. Follow the example.
cover the meat
lock the door
switch off the electricity
test the water
tidy up
Example:
S1: May I change the bulb
S2: No, you may not. You must switch off the electricity. Then you may change the bulb.
Pair work
______ put the meat in the fridge
S1: May I put the meat in the fridge
S2: No, you many not. You must cover the meat. Then you may put the meat in the fridge.
______ go to bed
S1: May I go the bed
S2: No, you many not. You must lock the door. Then you may go to bed.
______ take a bath now
S1: May I take a bath now
S2: No, you many not. You must test the water. Then you may take a bath.
______ go out now
S1: May I go out now
S2: No, you many not. You must tidy up. Then you may go out.
Syllables
Improve your pronounciation
English words can be divided into syllables. All words have one or more syllables.
1 syllable 2 syllable 3 syllable 4 syllable 5 syllable
safe pow-er com-pu-ter su-per-mar-ket e-lec-tri-ci-ty
Syllables
A syllable usually has a vowel sound. However, the consonant sounds in bold in the following words are separate syllables too.
音节
音节：有的单词只包括一个音节，有的单词包含两个、三个或更多的音节，分别称为单音节词、双音节词和多音节词。单音节词一般都是重读的。双音节词一般只有一个音节是重读的。多音节词除了重读音节外，有时还有一个次重读音节。
音节的核心是元音。少数辅音字母，如l、m、n也可以构成非重读音节。一个音节里可以只有一个元音字母而没有其他字母，如i、a。元音字母的前面或后面可以有一个或两个辅音字母，如we, she, at, ask, box, them, desk, middle, letter等。
Complete the table with the words below. Separate them into syllables with hyphens (-).
ma-chine
ex-er-cise
pto-duce
im-por-tant
Look at the syllables bine them into words with hyphens (-).
2 syllables pa-cket
3 syllables che-mi-cal
in-side
ex-am-ple
ca-ble
en-er-gy
1. newspaper ( )
2. hear ( )
3. able ( )
4. anyone ( )
5. candle ( )
6. dangerous ( )
7. battery ( )
8. American ( )
Say these words. Then write the number of syllables in brackets.
3
1
2
3
2
3
3
4
Notes
1. safety n. 安全；平安
变形：
形容词为safe安全的
副词为safely安全地
反义词为danger危险
短语：
in safety 安全地
safety belt 安全带
safety measure 安全措施
用safe，safely，danger，in safety，safety belt，safety measure完成句子。
We should always keep ourselves _________ when we are alone at home.
The children crossed the road _________ with the help of the policeman.
Fire is a great _________ if not used properly.
They arrived at the destination _________ after a long journey.
Don’t forget to fasten your _________ before driving.
The school has taken many _________ to protect students.
safe
safely
danger
in safety
safety belt
safety measure
2. instruction n. 用法说明；操作指南
变形：
动词为instruct指示；命令；教导
形容词为instructive有教育意义的；增长知识的
instruction表示“用法说明；操作指南”时常用复数形式instructions 。
短语：follow the instructions 按照说明；give instructions 下达指令
Practice: Read the ____________ (instruct) carefully before you use the new machine.
instructions
3. connect v. （使）连接

变形：第三人称单数connects，现在分词connecting，过去式和过去分词 connected,名词形式为connection（连接；联系）。
短语：
connect ... to ... 把……连接到……
connect with 与……相连/联系
Practice: You can ________ the computer ________ the printer to print the document.
connect to
Thank you!

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