electricityPPT课件
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2. 告诉人们必须或禁止做某事用must或mustn’t You must hand in your homework at once. You mustn’t talk loudly in public.
3. 表示请求或允许做某事may 或can May I come in ? Can I open the door ?
4、must have done 也表示肯定的猜测， 意为“ 一定做过……”
They must have cleaned the room . It’s so clean .他们一定打扫过房间了， 它这么干净。
Ⅰ.用适当的情态动词填空：。
1.___C__an_____you swim? 2.We ___c_o_u_ld_n_’_t __operate the machine last week, but we can operate it now. 3.Don’t worry. You _m_a_y__ return me this book tomorrow. 4.He said if he ___c_o_ul_d___ask me another question. 5.My grandma is ill. Youc_a_n_’t__ talk so loudly here . 6.I can’t play with you. I __m_u_s_t_____finish my homework first. 7.I____m_u_s_t___ get up early tomorrow.
4. look like =be like 1. He looks like his father .= He is like his father . 2. ---- What’s he like ?=What does he look like?
---- He is short and fat .
11. contain v. 包含；容纳；装有 Beer contains alcohol. 啤酒含有酒精。 The envelop contains some photos of her family.
Phrases :
1. 转化,变成 change into
2. 戏弄某人 trick sb
3. 最后
1. trick: v/n 戏弄,欺骗 It’s wrong to trick others.=It’s wrong to fool others =It’s wrong to play tricks (a trick) on others.= It’s wrong to play jokes (a joke) on others
Unit 4 Electricity
Words and expressions in Reading A
What do you know about:
electricity n. 电 electrician n. 电工 There is a problem with the electricity in Tom’s flat . An electrician has come to deal with it .
n. 找头；（找回的）零钱 Here is your change.
energy n. Young people usually have more energy than the old.
年轻人通常比老年人有活力。
energetic a.
1. He is an energetic boy; he enjoys sports.
★★★Notes : 1、can 和 be able to的区别 : be able to 有
人称数和时态的变化。
I can come tomorrow .
I will be able to come tomorrow. 2、 在回答must的疑问句时，否定回答常用 needn’t 或don’t have to表示不必，而不用 mustn’t 。 Must we stay here ?
6. explain v. explanation n. Can you explain it to me ? = Can you give an explanation about it to me ?
7. form v. 组成 ＆ n. 形式 1.Mike formed a football team in his class
8.______C_o_u_ld_____you please open the window?
9. Nobody __c_a_n_______live without air.
10._C__a_n_____he speak Chinese ?Yes ,a little. 11. The book __m_u_s_t____ be returned before Saturday.
at last
4. 看上去很傻 look foolish
5. 流经 flow through
6. 某种意义上 in a way
7. 看电缆联结在一起 be connected to cables
8. 电灯泡 a light bulb
9. 挠头 scratch one’s head
10. 11.
发不电同站形式的a 能po量werdisftfaetrieonnt
2. Hong Kong and Shenzhen are connected by Luohu Bridge . connect v.
1. （常与to, with连用）连接；结合；连结 Will you connect this wire to the television?
你把这根电线和电视机连上好吗？
to the conversation between the electrician and Benny’s mother. Find out which things were on or off when the electricity stopped, and circle ON or OFF next to the objects.
change it into different forms of energy
NO
Who is looking foolish now, Benny
There is a problem with the electricity in Benny’s flat.
An electrician came to deal with this problem. Listen
washing machine television
vacuum cleaner
rice cooker
iron
★Language 情态动词
情态动词不能单独作谓语动词，后接其它动词 原形做谓语，没有人称和数的变化。
1. 表示能够或不能做某事用can 或 can’t A bird can fly . Fish can’t live without water.
5. in a way (partly)在某种程度上, 稍稍 In a way , I agree with him . Some of his ideas are right by the way By the way , can you tell me when we will leave ? in the way The table is in the way .Please move it . on the way On the way to school , I saw Ken . in this way I have collected many stamps in this way .
4 .谈论该做或不该做某事用should , ought to 或 shouldn’t , ought not to She should do her homework first . They ought to finish the work on time . they ought not to be late for school .
2."The more the young students worked, the more energetic they became." 这些年青学生们越干越有劲。
a b a
c
c
c
contain politely in a way
flows
Words and expressions in Reading B :
No, you need n’t . ( No, you don’t have to .) 3、 must be 表示肯定的猜测，意为“一定……”
can’t be 表示否定的猜测，意为“ 不可 能……”
She must be a nurse .
I saw her in the library just now .She can’t be here .
forms
of
energy
it=electricity
It=electricity
me=Benny
They=cables
They=batteries
wire cable
street power station
Yes
I was able to trick Daisy at last
NO
We can’t see electricity, but we can
2. at last = in the end =finally I finished my work at last . I finished my work in the end . I finished my work finally . 3. flow through Elctricity flows through a wire .It’s like water ,in a way .
2 . 接通电话 Connect me with Beijing University.
给我接北京大学。
9 bury v. buried buried When people died , they are usually buried .
10. cable n. 电缆 wire: n. 电线 Computers are connected with each other by means of cables.
with his classmates last term . 2. We can change it into different forms of energy. 3. She has a tall graceful form.
她有着高大优雅的外形。
8 be connected to
1. The wires in our flat are connected to cables buried under the street .
electric a. 电的 electric storm electric shock electrical a. 电气科学的 electrical apparatus 电器 electrical engineer
change v/n. 变化 We can’t see electricity , but we can change it into energy . Great changes have taken place in Shenzhen since 1980. changeable a. The weather is changeable on top of the mountain .
Before you listen, make sure you know the following words:
Vacuum v. 用真空吸尘器清扫 properly adv. 正确地lug n.插头
lights
air conditioner
fridge
kettle
3. 表示请求或允许做某事may 或can May I come in ? Can I open the door ?
4、must have done 也表示肯定的猜测， 意为“ 一定做过……”
They must have cleaned the room . It’s so clean .他们一定打扫过房间了， 它这么干净。
Ⅰ.用适当的情态动词填空：。
1.___C__an_____you swim? 2.We ___c_o_u_ld_n_’_t __operate the machine last week, but we can operate it now. 3.Don’t worry. You _m_a_y__ return me this book tomorrow. 4.He said if he ___c_o_ul_d___ask me another question. 5.My grandma is ill. Youc_a_n_’t__ talk so loudly here . 6.I can’t play with you. I __m_u_s_t_____finish my homework first. 7.I____m_u_s_t___ get up early tomorrow.
4. look like =be like 1. He looks like his father .= He is like his father . 2. ---- What’s he like ?=What does he look like?
---- He is short and fat .
11. contain v. 包含；容纳；装有 Beer contains alcohol. 啤酒含有酒精。 The envelop contains some photos of her family.
Phrases :
1. 转化,变成 change into
2. 戏弄某人 trick sb
3. 最后
1. trick: v/n 戏弄,欺骗 It’s wrong to trick others.=It’s wrong to fool others =It’s wrong to play tricks (a trick) on others.= It’s wrong to play jokes (a joke) on others
Unit 4 Electricity
Words and expressions in Reading A
What do you know about:
electricity n. 电 electrician n. 电工 There is a problem with the electricity in Tom’s flat . An electrician has come to deal with it .
n. 找头；（找回的）零钱 Here is your change.
energy n. Young people usually have more energy than the old.
年轻人通常比老年人有活力。
energetic a.
1. He is an energetic boy; he enjoys sports.
★★★Notes : 1、can 和 be able to的区别 : be able to 有
人称数和时态的变化。
I can come tomorrow .
I will be able to come tomorrow. 2、 在回答must的疑问句时，否定回答常用 needn’t 或don’t have to表示不必，而不用 mustn’t 。 Must we stay here ?
6. explain v. explanation n. Can you explain it to me ? = Can you give an explanation about it to me ?
7. form v. 组成 ＆ n. 形式 1.Mike formed a football team in his class
8.______C_o_u_ld_____you please open the window?
9. Nobody __c_a_n_______live without air.
10._C__a_n_____he speak Chinese ?Yes ,a little. 11. The book __m_u_s_t____ be returned before Saturday.
at last
4. 看上去很傻 look foolish
5. 流经 flow through
6. 某种意义上 in a way
7. 看电缆联结在一起 be connected to cables
8. 电灯泡 a light bulb
9. 挠头 scratch one’s head
10. 11.
发不电同站形式的a 能po量werdisftfaetrieonnt
2. Hong Kong and Shenzhen are connected by Luohu Bridge . connect v.
1. （常与to, with连用）连接；结合；连结 Will you connect this wire to the television?
你把这根电线和电视机连上好吗？
to the conversation between the electrician and Benny’s mother. Find out which things were on or off when the electricity stopped, and circle ON or OFF next to the objects.
change it into different forms of energy
NO
Who is looking foolish now, Benny
There is a problem with the electricity in Benny’s flat.
An electrician came to deal with this problem. Listen
washing machine television
vacuum cleaner
rice cooker
iron
★Language 情态动词
情态动词不能单独作谓语动词，后接其它动词 原形做谓语，没有人称和数的变化。
1. 表示能够或不能做某事用can 或 can’t A bird can fly . Fish can’t live without water.
5. in a way (partly)在某种程度上, 稍稍 In a way , I agree with him . Some of his ideas are right by the way By the way , can you tell me when we will leave ? in the way The table is in the way .Please move it . on the way On the way to school , I saw Ken . in this way I have collected many stamps in this way .
4 .谈论该做或不该做某事用should , ought to 或 shouldn’t , ought not to She should do her homework first . They ought to finish the work on time . they ought not to be late for school .
2."The more the young students worked, the more energetic they became." 这些年青学生们越干越有劲。
a b a
c
c
c
contain politely in a way
flows
Words and expressions in Reading B :
No, you need n’t . ( No, you don’t have to .) 3、 must be 表示肯定的猜测，意为“一定……”
can’t be 表示否定的猜测，意为“ 不可 能……”
She must be a nurse .
I saw her in the library just now .She can’t be here .
forms
of
energy
it=electricity
It=electricity
me=Benny
They=cables
They=batteries
wire cable
street power station
Yes
I was able to trick Daisy at last
NO
We can’t see electricity, but we can
2. at last = in the end =finally I finished my work at last . I finished my work in the end . I finished my work finally . 3. flow through Elctricity flows through a wire .It’s like water ,in a way .
2 . 接通电话 Connect me with Beijing University.
给我接北京大学。
9 bury v. buried buried When people died , they are usually buried .
10. cable n. 电缆 wire: n. 电线 Computers are connected with each other by means of cables.
with his classmates last term . 2. We can change it into different forms of energy. 3. She has a tall graceful form.
她有着高大优雅的外形。
8 be connected to
1. The wires in our flat are connected to cables buried under the street .
electric a. 电的 electric storm electric shock electrical a. 电气科学的 electrical apparatus 电器 electrical engineer
change v/n. 变化 We can’t see electricity , but we can change it into energy . Great changes have taken place in Shenzhen since 1980. changeable a. The weather is changeable on top of the mountain .
Before you listen, make sure you know the following words:
Vacuum v. 用真空吸尘器清扫 properly adv. 正确地lug n.插头
lights
air conditioner
fridge
kettle