Unit 6 Electricity everywhere 单元知识点梳理 沪教版英语七年级下册

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Unit 6 Electricity everywhere 单元知识点梳理 沪教版英语七年级下册

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Unit 6 Electricity everywhere 单元知识点梳理
一、重点单词
1. electricity / lek tr s ti/ n. 电;电力(不可数名词;核心短语:Electricity everywhere 电无处不在)
2. everywhere / evriwe (r)/ adv. 到处;处处(同义:here and there)
3. use /ju z/ v. 使用 /ju s/ n. 用途(短语:use electricity 用电;a useful tool 有用的工具)
4. useful / ju sfl/ adj. 有用的(反义词:useless;短语:be useful for 对……有用)
5. important / m p tnt/ adj. 重要的(名词:importance;短语:be important for 对……重要)
6. safe /se f/ adj. 安全的(名词:safety 安全;副词:safely;短语:safe to use 安全使用)
7. dangerous / de nd r s/ adj. 危险的(名词:danger 危险;短语:be dangerous to do 做……很危险)
8. careful / ke fl/ adj. 小心的;仔细的(副词:carefully;短语:be careful with 小心对待)
9. careless / ke l s/ adj. 粗心的(反义词:careful;前缀 care-+否定后缀 -less)
10. turn /t n/ v. 转动;开关;转向(短语:turn on 打开;turn off 关掉;turn down 调小)
11. on / n/ prep. 在……上 adv. 开着(表电器状态;对应:off 关着)
12. off / f/ prep. 离开 adv. 关着(表电器状态;对应:on 开着)
13. plug /pl ɡ/ v. 插插头 n. 插头(短语:plug in 插上插头;a power plug 电源插头)
14. unplug / n pl ɡ/ v. 拔下插头(前缀 un- 表否定,对应:plug in)
15. light /la t/ n. 灯;光线 adj. 轻的 v. 点亮(短语:a light bulb 灯泡;turn on the light 开灯)
16. TV / ti vi / n. 电视机(全称:television;短语:watch TV 看电视)
puter /k m pju t (r)/ n. 电脑;计算机(短语:use a computer 用电脑)
18. fridge /fr d / n. 冰箱(全称:refrigerator;短语:in the fridge 在冰箱里)
19. fan /f n/ n. 风扇;扇子(短语:an electric fan 电风扇;turn on the fan 开风扇)
20. machine /m i n/ n. 机器(短语:electric machine 电器;a washing machine 洗衣机)
21. save /se v/ v. 节约;拯救(短语:save electricity 节约用电;save water 节约用水)
22. waste /we st/ v. 浪费 n. 浪费(短语:waste electricity 浪费电;a waste of energy 浪费能源)
23. touch /t t / v. 触摸;碰(短语:touch the wire 碰电线;don’t touch 请勿触摸)
24. wire / wa (r)/ n. 电线;金属丝(短语:a broken wire 断电线;power wire 电源线)
25. wet /wet/ adj. 湿的(反义词:dry 干的;短语:wet hands 湿手)
26. dry /dra / adj. 干的 v. 弄干(反义词:wet 湿的;短语:dry hands 擦干手)
27. burn /b n/ v. 燃烧;烫伤(过去式/过去分词:burnt/burnt;短语:burn one’s hand 烫伤手)
28. hurt /h t/ v. 伤害;使受伤(过去式/过去分词:hurt/hurt;短语:hurt oneself 伤到自己)
29. power / pa (r)/ n. 电力;力量(短语:power station 发电站;electric power 电力)
30. energy / en d i/ n. 能量;能源(不可数名词;短语:save energy 节约能源)
二、重点短语
1. Electricity everywhere 电无处不在
2. use electricity 使用电力
3. save electricity 节约用电
4. waste electricity 浪费电力
5. turn on 打开(电器、灯光等)
6. turn off 关掉(电器、灯光等)
7. plug in 插上插头
8. unplug sth. 拔下……的插头
9. be careful with 小心对待……
10. wet hands 湿手
11. touch the wire 触碰电线
12. electric machine 电器
13. washing machine 洗衣机
14. electric fan 电风扇
15. turn on the light 打开灯
16. turn off the TV 关掉电视
17. safe to use 安全使用
18. be dangerous to do sth. 做某事很危险
19. save energy 节约能源
20. a waste of electricity 浪费电
21. power station 发电站
22. in daily life 在日常生活中
23. on time 按时
24. keep safe 保证安全
25. follow the rules 遵守规则
三、重点句型
1. —What do we use electricity for in our daily life
—We use it to turn on the lights, watch TV and use the computer.
(—我们日常生活中用电做什么?—我们用电开灯、看电视和用电脑。)
2. Electricity is very useful and it is important for our modern life.
(电非常有用,它对我们的现代生活至关重要。)
3. We must turn off the lights when we leave the room to save electricity.
(离开房间时我们必须关灯,以此节约用电。)
4. It’s dangerous to touch the electric wire with wet hands.
(用湿手触碰电线是很危险的。)
5. Please be careful with electricity and don’t play with it at home.
(请小心用电,不要在家里玩电。)
6. We should unplug the charger when the phone is fully charged.
(手机充满电后,我们应该拔下充电器。)
7. Don’t leave the fridge open for a long time, because it will waste a lot of electricity.
(不要让冰箱长时间开着,因为这会浪费很多电。)
8. Electricity is everywhere, but we must use it safely and wisely.
(电无处不在,但我们必须安全且明智地使用它。)
9. It’s a good habit to save electricity from the small things in life.
(从生活中的小事做起节约用电,是一个好习惯。)
10. We mustn’t play near the power station, because it’s not safe.
(我们不许在发电站附近玩耍,因为那不安全。)
四、重点词汇辨析
1. turn on & turn off & turn up & turn down
短语 含义 适用对象 例句
turn on 打开(电器、水源、煤气等) 灯、电视、风扇、水龙头等 Please turn on the light. It’s too dark.
turn off 关掉(电器、水源、煤气等) 与turn on一致 Remember to turn off the TV before you go out.
turn up 调大(音量、温度等) 收音机、电视、空调等 Can you turn up the radio I can’t hear it clearly.
turn down 调小(音量、温度等) 与turn up一致 Please turn down the music. My sister is sleeping.
2. safe & safely & safety
词汇 词性 含义 核心搭配/例句
safe adj. 形容词 安全的 It’s safe to cross the road now. / a safe place
safely adv. 副词 安全地(修饰动词) We can use electricity safely if we are careful.
safety n. 名词 安全(抽象概念) We must pay attention to electricity safety in life.
3. careful & careless
词汇 词性 含义 反义词 核心搭配/例句
careful adj. 形容词 小心的、仔细的 careless Be careful with the broken glass. / a careful student
careless adj. 形容词 粗心的、马虎的 careful He is a careless boy and often forgets to turn off the light.
4. use (v.) & be used for (doing) sth.
词汇/短语 句式结构 含义 例句
use sb. + use + sth. + to do sth. 某人用某物做某事 We use electricity to power the fridge.
be used for sth. + be used for (doing) sth. 某物被用来做某事 Electricity is used for lighting the room.
5. dangerous & in danger
词汇/短语 词性 含义 用法/例句
dangerous adj. 形容词 危险的(修饰人/物/事) It’s dangerous to play with fire. / a dangerous animal
in danger 介词短语 处于危险中(作表语) The little boy is in danger because he touches the wire.
五、重点语法
1. 祈使句(肯定式/否定式/委婉式)
本单元核心语法之一,用于发出安全用电、节约用电的指令、提醒和建议,是七年级下册祈使句的强化运用,贴合生活用电的日常场景,简洁易懂。
(1)肯定式:动词原形 + 其他
- 例句:Turn off the lights when you leave.(离开时关灯。)/ Be careful with electricity.(小心用电。)
(2)否定式:Don’t + 动词原形 + 其他
- 例句:Don’t touch the wire with wet hands.(不要用湿手碰电线。)/ Don’t waste electricity.(不要浪费电。)
(3)委婉式:Please + 动词原形/Don’t + 动词原形
- 例句:Please unplug the charger in time.(请及时拔下充电器。)/ Please don’t leave the fan on all night.(请不要让风扇开一整晚。)
2. 情态动词must/mustn’t/should/shouldn’t的综合运用
围绕安全用电、节约用电表达义务、禁止、建议,是七年级下册情态动词的核心运用,贴合用电场景的语言表达,区分主观建议与客观规定。
(1)must:表必须、义务,强调用电的硬性要求
- 结构:主语 + must + 动词原形 + 其他
- 例句:We must follow the rules of safe electricity use.(我们必须遵守安全用电规则。)
(2)mustn’t:表禁止、不许,强调绝对不能做的危险用电行为
- 结构:主语 + mustn’t + 动词原形 + 其他
- 例句:We mustn’t play with electric wires at home.(我们不许在家里玩电线。)
(3)should:表应该,提出节约用电、安全用电的具体建议
- 结构:主语 + should + 动词原形 + 其他
- 例句:We should turn off the computer when we don’t use it.(我们不用电脑时应该关掉它。)
(4)shouldn’t:表不应该,指出错误的用电行为
- 结构:主语 + shouldn’t + 动词原形 + 其他
- 例句:We shouldn’t keep the air conditioner on for a long time.(我们不应该让空调一直开着。)
3. it作形式主语的句式:It’s + 形容词 + to do sth.
本单元高频运用,用于评价用电行为的安全性、必要性,形容词贴合本单元核心话题,是七年级下册重点句式的巩固运用,真正主语为后面的to do sth.。
(1)核心结构
It’s + 形容词(dangerous/safe/important/good) + to do sth.
(2)本单元高频例句
- It’s dangerous to plug in the machine with wet hands.(用湿手给电器插插头很危险。)
- It’s important to save electricity in our daily life.(日常生活中节约用电很重要。)
- It’s safe to use electricity if we are careful enough.(如果我们足够小心,用电是安全的。)
4. 时间状语从句(when引导)
用于表达“做某一动作的同时/在某一时段做另一动作”,贴合用电场景中“做某事时要注意的用电规则”,从句多用一般现在时,主句为祈使句/情态动词句式。
(1)核心结构
When + 主语 + 动词原形/三单 + 其他,主句(祈使句/情态动词句式)
(2)本单元例句
- When you leave the classroom, you must turn off the lights.(当你离开教室时,必须关灯。)
- When the phone is fully charged, please unplug the charger.(当手机充满电时,请拔下充电器。)
六、写作指导(电的用途/安全用电/节约用电倡议类短文)
1. 核心写作结构
主题一:电的用途(基础核心)
部分 内容要点 本单元常用表达
开头 总述电的重要性,点题“电无处不在”,引出电的广泛用途 Electricity is everywhere in our modern life. It is very useful and important for us. We can’t live a convenient life without it.
主体 分2-3点说明电的具体用途:① 家庭生活(照明、家电);② 学习工作(电脑、电灯);③ 公共场所(路灯、电梯) First, we use electricity at home to turn on the lights, watch TV and use the fridge, washing machine and other electric machines. Second, we use it for studying and working—we use computers and lights to study and work better. Third, electricity is used in public places, like street lights and elevators.
结尾 总结电的价值,引出“安全、节约用电”的观点 Electricity makes our life more convenient and wonderful. We must use it safely and save it in our daily life.
主题二:安全用电倡议书(重点)
部分 内容要点 本单元常用表达
开头 点明电的重要性,同时指出用电不当的危险性,提出“安全用电”的倡议 Electricity is very useful, but it is dangerous if we use it carelessly. Many accidents happen because of wrong electricity use. So it’s very important for us to use electricity safely.
主体 分点提出具体的安全用电措施:① 不做危险行为(不碰电线、不用湿手碰电器);② 正确使用电器(插拔插头要小心);③ 远离危险区域(发电站、高压电线) First, we mustn’t touch the broken wire or plug in the machine with wet hands. Second, we should be careful when we plug or unplug the electric machines. Third, we mustn’t play near the power station or high-voltage wire.
结尾 呼吁大家重视安全用电,表达美好愿景 Safety is the first. Let’s use electricity carefully and safely. It can help us stay away from danger and live a happy life.
主题三:节约用电倡议书(重点)
部分 内容要点 本单元常用表达
开头 点明电力是珍贵的能源,现状存在浪费电的行为,提出“节约用电”的倡议 Electricity is a precious energy. But many people waste it in daily life, like leaving the lights on when going out. Saving electricity is our duty, and we should start from small things.
主体 分点提出具体的节约用电措施:① 随手关电器(灯、电视、风扇);② 合理使用大功率电器(空调、冰箱);③ 养成好习惯(不用充电器及时拔下) First, we must turn off the lights, TV and fan when we leave the room. Second, we shouldn’t keep the fridge open for long or the air conditioner on all day. Third, we should unplug the charger when the phone is full.
结尾 呼吁大家共同节约用电,表达美好愿景 Saving electricity is saving energy. Let’s work together to save electricity from every small thing. Our life will be better with our joint efforts!
2. 范文示例(主题二:安全用电倡议书)
Use Electricity Safely
Electricity is everywhere in our daily life and it makes our life more convenient. But electricity is dangerous if we use it carelessly. Many hurt accidents happen every year because of wrong electricity use. So it’s very important for all of us to learn to use electricity safely.
What can we do to use electricity safely First, we mustn’t touch any electric wire, especially the broken one. It’s very dangerous and it may hurt us. Second, we mustn’t plug in or turn on electric machines with wet hands. We should dry our hands first before using any electricity. Third, we should be careful when we use electric machines at home. Don’t play with plugs or switches. Fourth, we mustn’t play near the power station or high-voltage wire. Those places are not safe for us.
Safety is always the first thing in our life. Electricity is a good helper, but it can be a dangerous enemy if we are careless. Let’s learn the rules of safe electricity use and use it carefully. Let’s stay away from electricity danger together!
3. 范文示例(主题三:节约用电倡议书)
Let’s Save Electricity Together
Electricity is one of the most important energy in our modern life. We use it every day, but many people don’t know how to save it. They leave the lights on when going out and keep the air conditioner on for a long time. Now the earth is short of energy, so saving electricity is our duty.
We can save electricity from many small things in life. First, we must form a good habit—turn off the lights, TV and electric fan when we leave the room. Second, we shouldn’t keep the fridge open for a long time when we get food. Third, we need to unplug the charger when our phone or watch is fully charged. Fourth, we can use the fan instead of the air conditioner when it’s not too hot.
Saving electricity is saving our earth. Every little thing we do can save a lot of electricity. Let’s start from ourselves and start from now. Let’s work together to save electricity and make our earth better!

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