Unit 5 Be Green Lesson 2 知识点清单＆同步训练-2025-2026学年北师大版八年级英语下册

Unit 5 Be Green ⭐Lesson2知识点清单 一、核心词汇 单词 词性 中文释义 常用搭配 / 拓展 electricity n. 电；电能 save electricity (节电), electricity bill (电费单) bulb n. 灯泡 light bulb (灯泡), LED bulb (LED 灯) remote adj. / n. 遥控的；遥控器 remote control (遥控器) condition n. 条件；环境 air conditioning (空调) temperature n. 温度 room temperature (室温), set the temperature (调温) from now on phr. 从现在开始 时间状语短语 bill n. 账单；法案 electricity bill (电费单) replace v. 替换；取代 replace... with... (用… 替换…) LED n. 发光二极管 (节能光源) use LED lights (使用 LED 灯) exclamation n. 感叹句 exclamation mark (感叹号) 二、高频短语 & 固定搭配 短语 中文释义 例句 do our part 尽我们的一份力 We need to do our part to save electricity. save electricity 节约用电 We can save electricity at home and at school. turn off the lights 关灯 Turn off the lights when you’re not in the room. turn off computers 关电脑 Remember to turn off computers when not in use. close windows 关窗户 Close windows when heating or air conditioning is on. turn the computer off 关电脑 We should turn the computer off when not using it. replace old light bulbs 更换旧灯泡 Replace old light bulbs with LED ones. from now on 从现在起 Let’s do it from now on. do one’s part 尽某人的力 Everyone should do their part. set the room temperature 调节室温 Set the room temperature high in summer. use air conditioning 使用空调 Don’t use air conditioning when not needed. be high/low 调高 / 低 set the temperature high (把温度调高) 三、核心句式 1. 提出建议 / 指令（Imperative） · 结构：Turn off... / Close... / Remember to... · 例：Turn off the lights when you’re not in a room. · 例：Close the windows when you’re using air conditioning. 2. 表达问题与解决方案 · 结构：Our electricity bill is very high. We need to do something. · 结构：First, let's... Then, let's... · 例：Our electricity bill is very high. First, let's turn off the lights. 3. 表达目的与必要性 · 结构：It’s important because... / We can do... by doing... · 例：It’s important because saving electricity helps the environment. · 例：We can save electricity by turning off the TV. 4. 感叹句（Exclamations） · 结构：How + adj./adv. + 主语 + 谓语! / What + (a/an) + adj. + n. + 主语 + 谓语! · 例：Oh, dear! We’ve used so much electricity! · 例：What a high bill! (结合写作要求) 四、语法核心考点 1. 祈使句 · 用法：表示命令、建议、邀请或指示。 · 结构： · 肯定：动词原形 + 其他. (例: Turn off the light.) · 否定：Don't + 动词原形 + 其他. (例: Don't touch it.) · 本课重点：turn off, close, replace 等动词开头的健康 / 环保建议句。 2. 感叹句 (Exclamations) · 考点：区分 How 和 What 引导的感叹句。 · 公式： · How + 形容词 / 副词 + 主语 + 谓语！ (例: How high the bill is!) · What + (a/an) + 形容词 + 名词 + 主语 + 谓语！ (例: What a good idea!) · 应用：在写作中表达强烈情感（如：Oh dear!, How important it is!）。 3. 介词 when 引导时间状语 · 结构：[动作], when + [时间/条件] · 例：Turn off the lights when you’re not in the room. · 例：Close windows when using air conditioning. 4. 固定搭配 replace... with... · 含义：用…… 替换…… · 例：Replace old bulbs with LED ones. 5. 情态动词 need to · 含义：需要（做某事） · 例：We need to turn off the computers. ⭐Lesson2同步练 一、用括号内单词的适当形式填空 1. We need ____________ (turn) off the lights when we leave the room. 2. Remember ____________ (close) the windows when the air conditioning is on. 3. It's important ____________ (do) our part to save the environment. 4. We should replace old light bulbs ____________ (with) LED lights. 5. Our electricity bill is very high. We need ____________ (do) something. 6. ____________ (turn) off the TV when you are not watching it. 7. I ____________ (use) to waste electricity, but now I know how to save it. 8. We can save electricity by ____________ (turn) off the computer. 9. Set the room temperature high when ____________ (use) air conditioning in summer. 10. In my opinion, ____________ (save) electricity is necessary. 11. Kate and Joe talked about how ____________ (save) electricity at home. 12. Don't ____________ (stay) in the room with the lights on if you are not using it. 13. It's a good idea ____________ (write) a list of tips for saving electricity. 14. We can do our part by ____________ (take) action every day. 15. How ____________ (excite) it is to save energy! 二、单项选择题 1. —What can we do to save electricity? —We can turn off the lights when not in the room. ______ closing the windows. A. Try B. Try to C. Trying D. Tried 2. Our electricity bill is very high. We need to do something ______ it. A. about B. with C. for D. to 3. Remember ______ the computer off when you are not using it. A. turn B. to turn C. turning D. turned 4. ______ good advice it is to save electricity! A. What B. How C. What a D. How a 5. We should replace old light bulbs ______ LED ones. A. by B. with C. for D. of 6. I ______ think learning is only about schoolwork, but now I do. A. used to B. am used to C. use to D. am using to 7. ______ off the lights when you leave the room. It saves electricity. A. Turning B. To turn C. Turn D. Turned 8. It's important ______ us to learn how to save electricity. A. for B. to C. of D. with 9. Kate and Joe are talking about the ______ problem. They need to save electricity. A. healthy B. environmental C. lifestyle D. schoolwork 10. —Why do we need to set the room temperature high? —______ it's hot in summer. A. So B. Because C. When D. And 11. Which of the following is NOT a way to save electricity? A. Using LED lights. B. Turning off computers. C. Leaving the TV on. D. Closing windows. 12. Trying new things ______ also a kind of learning. A. is B. are C. was D. were 13. We can do our part ______ joining a school club to help the environment. A. by B. with C. for D. in 14. ______ beautiful the sunshine is! Let's go out for a walk. A. What B. How C. What a D. How a 15. My parents are proud because I ______ my part in saving electricity this month. A. do B. did C. have done D. will do 学科网（北京）股份有限公司 $