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(共42张PPT)
Unit 6
Electricity everywhere
七年级
沪教版（2024）
下
核心知识梳理总结
梳理内容
01
单元单词梳理
05
单元语法梳理
02
单元词形变换
03
单元短语梳理
04
单元句型梳理
06
话题写作讲解
01
单元单词梳理
单元单词梳理
词汇 音标 词性和词义
battery /'b t ri/ n.电池
electricity / lek tr s ti/ n.电;电能
apartment / 'pa:tm nt/ n.公寓套房
fridge /fr d / n.冰箱
household / ha sh ld/ adj.家庭的
*switch-off / sw t f/ adj.关闭(电灯、机器等
*tablet / t bl t/ n.平板电脑
task /ta:sk/ n.任务;活动
video game 电子游戏
单元单词梳理
词汇 音标 词性和词义
while /wa l/ n.一段时间；一会儿
yogurt / j ɡ t/ n.酸奶
against / ɡenst/ prep.紧靠；碰；撞
speed /spi d/ n.速度;速率
connect /k nekt/ v.（使）连接
*device /d va s/ n.装置；设备
instructionn / n str k n/ 用法说明;操作指南
safety /'se fti/ n.安全；平安
rule /ru:l/ n.规则；条例
单元单词梳理
词汇 音标 词性和词义
power / pa / v.驱动;推动(机器或车辆)
landmark / l ndmɑ:k/ n.地标
climate /'kla m t/ n.气候
amount / 'maunt/ n.数量；数额
air conditioner 空调机；空调设备
have something in common
light bulb 电灯泡
go bad 变质
run out of 用完；耗尽
单元单词梳理
词汇 音标 词性和词义
electric car 电动汽车
electrical appliance 电器
television set / tel v n/ 电视机
climate change 气候变化
care about 关注:担忧
join in 参加;加入
02
单元词形变换
单元词形变换
electricity n.电;电能→electric adj.电的；用电的→electrical adj.与电有关的；
apartment n.公寓套房→apartmental adj.公寓的；房间的；分户的
household adj.家庭的→householder n.户主；家长；住户
task n.任务;活动→taskless adj.没有任务的；空闲的
→ taskmaster n.工头；监工
→tasking n.任务分配；任务安排（动词 task 的现在分词）
yogurt n.酸奶→yogurted adj.加酸奶的；制成酸奶的
speed n.速度;速率→speedy adj.迅速的；快的；敏捷的
单元词形变换
connect v.（使）连接 → connection n.连接；联系；关系；连接点
→connected adj.连接的；有关系的；有联系的
device n.装置；设备 →deviceless adj.无设备的；没有装置的
instruction n.用法说明;操作指南→ instructive adj.有益的；教育性的
→instructor n.指导者；教师；讲师
safety n.安全；平安→safe adj.安全的；平安的
→safely adv.安全地；平安地
rule n.规则；条例 →ruler n.统治者；直尺 →ruleless adj.无规则的；无约束的
单元词形变换
power v.驱动;推动 → powerful adj.强大的；有影响力的
→powerless adj.无力的；无动力的
→powerfully adv.强大地；有力地
landmark n.地标 →landmarkless adj.无地标性的；无标志性的
→landmarkable adj.可成为地标性的；值得纪念的
climate n.气候 →climatic adj.气候的；与气候有关的
amount n.数量；数额 → amountless adj.无数量的；无限量的
词汇练习
一、根据句意及提示写出所缺单词
1．Cathy checked her paper c_________ so that she could get good grades this time.
2．You can go, but you s_______ say goodbye to Mum.
3．I’m a robot. My energy comes from e__________ .
4．We can put the vegetables in the f _______ to keep them fresh.
5．The workers are c___________the telephone to the computer.
arefully
hould
lectricity
ridge
onnecting
词汇练习
6．Torches (手电筒) can give us light with the help of b________.
7．T_____ off the rice cooker if the pot is empty.
8．Please be sure to pay a visit to our a_________ when you come to our university next month.
9．In order to protect the environment, the government is encouraging people to recycle their__________ ['ha sh ld] rubbish.
10．Dolphins can communicate with each other by __________ [pr dju s ] a great variety of noises.
atteries
urn
partment
household
producing
词汇练习
二、用括号中所给单词的正确形式填空。
1.We must _________ (connection) the cables carefully to set up the new light.
2.I often prepare some extra _________ (battery) for my camera when travelling.
3.The light isn't as bright as usual.I think it's _________ (run) out of power.
4.The ____________ (electricity) fan is very helpful on hot days.
5.The food in the fridge _______ (go) bad because the power was off for too long.
6.Following _________ (safe) rules can protect you from accidents.
went
connect
batteries
running
electric
safety
词汇练习
7.I am looking forward to _______ (join) in Earth Hour next year.
8.The factory uses large _________ (amount) of electricity to power its machines.
9.Read the ___________ (instruct)on how to use the television set correctly.
10.One turn of the wind turbine__________ (power) a house for around 29 hours.
joining
amounts
instructions
powers
03
单元短语梳理
单元短语梳理
1.尝试做某事 try doing sth.
2.听起来有趣 sound interesting
3.决定做某事 decide to do sth.
4.结果是 turn out (that)
5.手洗衣服 wash clothes by hand
6.电动汽车 electric car
7.以……的速度 at the speed of …
8.尽力做某事 try one's best to do sth.
单元短语梳理
9.利用 make use of
10.根据 according to
11.省电 save electricity
12. 电器 electrical appliance
13.关灯 switch off the lights
14.打开空调 turn on the air conditioner
15.让冰箱门开着 leave the fridge door open
单元短语梳理
17. 保护我们的星球 protect our planet
18.关注；担忧 care about
19.气候变化 climate change
20.参加；加入 join in
21.有作用；有影响 make a difference
22.数以千计；成千上万 thousands of
23.有相同的特征 have something in common
24.电灯泡 light builb
单元短语梳理
25.空调机 air conditioner
26.电子游戏 video game
27.用完，耗尽 run out of
28.变质 go bad
29.太阳能 solar power
30.水能 water power
31.关掉 turn off/ switch off
32. 想象做某事 imagine doing sth
04
单元句型梳理
单元句型梳理
1.用完电脑要关机。
Turn off your computer when you're not using it.
2.—为什么你觉得电对我们这么重要
Why do you think electricity is important to us
—因为电使我们的生活更舒适。
Because electricity makes our lives easier.
3. 然而，事实证明没有电生活会很难。
However it turned out that it was very hard to live without electricity.
4.你能告诉我你所知道的关于电的事实吗
Can you tell me what you know about electricity
单元句型梳理
5.并且我们千万不要用湿手去触碰任何电器。
And we mustn't touch any electrical appliances with wet hands.
6.他们在试图证明小小的改变可以给我们的星球带来很大的影响。
They are trying to show that small changes can make a great difference to our planet.
7.我们玩了一会儿游戏。
We played games for a while.
8.我们的平板电脑没电了。
Our tablet ran out of battery.
单元句型梳理
9.因为没有电，所以在冰箱里的一些东西很快变质了。
Since there was no electricity, some things in the fridge quickly went bad
10.在暴风雨期间我们禁止出外。
We mustn't go outdoors during a storm.
11.我可以试一试吗？
May I try
12.我们需要在打开设备前确保电缆正确连接。
We need to make sure that cables are connected correctly before we turn on the device.
单元句型梳理
13.你必须要把它还给我因为它是我最喜欢的尺子。
You must give it back to me because it's my favourite ruler.
14.当你离开家时，关灯。
Turn off the lights when you leave home.
15.在窗户开着的时候，不要打开空调。
Don't turn on the air conditioner when the window is open.
短语句子练习
一、根据汉语意思完成句子，每空一词。
1．当我们在黑暗的房间里打开灯时，房间里的一切都会立即亮起来。
When we _____ ____ a lamp in a dark room, everything is lit up in the room at once.
2．人们在街上应该遵守交通规则。
People should _____ _______ ______on the streets.
3．一旦被建成，这座发电站将向所有邻近的城镇和村庄供电。
Once completed, this _______ _______ ________ will supply all the neighbouring towns and villages with .
turn on
obey traffic rules
power station electricity
短语句子练习
4．我和我最好的朋友有着某些相同之处。
My best friend and I _____ ____ __________ something .
5．我手机里的电池没电了。
The battery in my phone has ______ _____.
6．在未来，汽车很可能会使用水或太阳能为其提供动力。
In the future, cars will probably use water or solar ________ to _______them.
7．他已经来拜访过两次了，我们每次都闲谈一会儿。
He has come round twice already and we chatted ____ ___ _______ each time.
have in common
run out
energy power
for a while
05
单元语法梳理
单元语法梳理
情态动词can、may、must的相关用法
1. 情态动词概念：
情态动词具有一定的词义，但不能独立存在，须与动词原形一起构词谓语，表示说话人对某一 动作或状态的看法或主观设想，如意愿、需要、可能或怀疑等。
情态动词有时态的变化，但没有人称和数的变化（have to 除外）。
2. 一些常见情态动词的用法：
（1）情态动词 can 的用法
单元语法梳理
表示一种能力： I can speak English.我会说英语。
表示“可以”,相当于 may.May/can I ...... You can ask me for help.I can speak English.
can't 表不可以，不能够。 He can’t speak French.他不会说法语。
can’t be 表示不可能(对事情的否定推测） It can’t be true.这不可能是真的。
could:比 can 更加委婉，也可用于 can 的过去 式。could 引导一般疑问句，用 can 回答。 Jack asked his mom whether he could go out tonight. 杰克问他妈妈今晚是否可以出去。
---Could I go out tonight 我今晚可以出去吗？
---Yes,you can./---No,you can't.
是的，你可以/---不，你不能。
单元语法梳理
（2）情态动词 may 的用法
1.表示“可以” May I come in 我可以进来吗？
2.表推测：可能 That boy may be Jack.But I'm not sure.那个男孩可能是杰克。但我不确定。
3. might:比 may 更加委婉，也可用于 may 的过去式，也可表推测。 Tom might know the answer.汤姆可能知道答案。
【拓展】 may,maybe,may be 的用法区别
maybe 为副词，不能做句子谓语，常放在句首或者主谓之间。
如：Maybe she will come tomorrow.也许她明天会来。
may be 构成谓语结构“可能是”
如：She may be a teacher.她可能是一名教师。
单元语法梳理
（3）情态动词 must 的用法
1.must 表示“必须”主观意愿， have to 表“不得不”客观因素 I must go home now.我现在必须回家了。
It's raining hard outside,so we have to stay at home.
外面雨下得很大，所以我们不得不呆在家里。
2.表推测：‘一定’,表肯定推测。(重点考点) That book must be Mary's.Her name is on it.那本书一定是玛丽的。她的名字在上面。
3.must 引导的一般疑问句。 否定回答：No,you needn't/don't have to. 肯定回答：Yes,you must./have to. Must I arrive at the airport before 5 p.m
Yes, you must./No, you needn’t.
我必须在下午5点之前到达机场吗？
是的，你必须/不，你不用。
4.注意：mustn't 表示“禁止” You mustn't smoke here.你不能在这里抽烟。
语法练习
一 、单项选择。
1.All passengers _____ go through safety check before they take a plane.
A.can B.may C.must D.could
2.—You look very pretty if I _____ say so.
—Thanks a lot for saying that.
A.must B.may C.will D.have to
3.You _____ walk to close to the edge of the hill because you might fall and hurt
yourselves.
A.mustn't B.must C.can D.needn't
C
B
A
语法练习
4.—Do you think that Kobe will be elected as the MVP this year —It _____ him.He has retired(退役)since April 13.
A.can't be B.mustn't be C.must be D.can be
5.—Mum, _____I play football this afternoon —Sure,but you ______finish your homework first.
A. may;could B.can;must C.can;mustn't D.may;can't
6.Please don't make so much noise.I _____ hear the speaker very well.
A.needn't B.mustn't C.can't D.shouldn't
A
B
C
语法练习
二、根据句子需要用情态动词结构，补全句子，每空一词。
1.迈克，你千万不要玩火。
Mike, you ________________ fire.
2.我可以问你一个问题吗
_________ I _____ you a question
3.你上课不要接电话。
You ______________ the telephone in class.
4.她必须为她的自行车找个适当的地方.
She __________ a right place for her bike.
mustn’t play with
May/Can ask
mustn’t answer
must find
06
话题写作讲解
话题写作讲解
假设你是李明，你们家很注意节约用电，并 且很关注用电安全常识。经过和家人讨论，你们 制定了一套有关用电安全的家规。请根据下面 表格中的要点提示，写一篇不少于70词的短文 介绍 一 下该家规。
必须 禁止
不用电器的时候关掉它们 在炉具旁放纸张
保持电线干燥 随处扔电池
取完东西后记得关上冰箱门 用湿手去碰电器
___________________________________________________________________________________________________________________________________________________________________________________________________
话题写作讲解
1. 体裁： 说明文；
2. 人称： 第一人称复数；
3. 时态： 一般现在时。
4. 写作内容：文章一开始首先强调了电在日常生活中的重要性，接着引出作者家庭制定的用电安全规则，并告知读者将有六条规则介绍给大家。然后中间部分详细具体阐述了这六条用电安全规则。结尾总结全文，强调遵循这些规则的好处，呼吁节约用电。
写作思路点拨
话题写作讲解
开始：强调电的重要性，引出作者家庭制定的用电安全规则
中间：详细具体阐述了这六条用电安全规则
主题：介绍你喜欢的人
最后：结尾总结全文，强调遵循这些规则的好处，呼吁节约用电。
Electricity is very important in our daily lives. In my family, we make some rules... ...
First, ... Second,... Third, ... Fourth, ...
Fifth,...And the last, don't touch electrical appliances with wet hands.
Let's stop polluting the river. I hope that everyone will take some measures to protect our home.
文章结构
话题写作讲解
Electricity is very important in our daily lives. In my family, we make some rules about how to use electricity safely. Here are six of them.
First, switch off the electrical appliances when we don't use them. Second, we mustn't put paper beside a cooker. Third, we must keep the wire dry. Fourth, we mustn't throw batteries everywhere. Fifth, remember to close the door of the fridge after we take things out of it. And the last, don't touch electrical appliances with wet hands.
If we follow these rules, we will be safe and we can save a lot of electricity.
Thanks!
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