Unit 7重点知识讲解-2025-2026学年冀教版英语八年级上册

冀教英语八上Unit 7重点知识讲解 Unit 7 Let's volunteer! 一、单词用法讲解 1. collect /kəˈlekt/ v. 收集；采集；收藏 教材原句：Maybe you can plant trees and collect rubbish on the side of the road to protect the environment. → 替换例句：He used to collect cards, but now he likes to collect stamps. 用法解析 · 及物动词，意为“收集；采集；收藏”。 · 名词形式为 collection（收藏品），collector（收藏家）。 例句 · The great collector has collected many collections in the past fifty years. · We collected old books to donate to the village school. 2. make a difference in 在……方面起作用 教材原句：Join our program and make a difference in their lives. → 替换例句：Your small action can make a big difference in protecting the environment. 用法解析 · 动词短语，常见搭配： ① make a/the difference in...：在……方面起作用 ② make no difference to...：对……来说没有关系/差别 · 形容词形式为 different，短语 be different from...（与……不同），其反义短语为 be the same as...（与……一样）。 例句 · My bag is the same as yours, but my pen is different from yours. · Whether you come or not makes no difference to the plan. 3. information /ˌɪnfəˈmeɪʃn/ n. 信息；通知 教材原句：You will be responsible for answering questions and providing information for donors. → 替换例句：With the appearance of the internet, lots of information became free. 用法解析 · 不可数名词，意为“信息；通知”，表示“一则信息”用 a piece of information。 易混辨析 易混词 用法及例句 information 泛指信息或通知，不可数名词。 例：We need more information about the activity. news 强调发生不久的消息或新闻，不可数名词。 例：I heard the news on the radio. message 指口头或书面告知的消息，可数名词。 例：She left a message for you. 例句 · Did you see the notice on the wall? 4. notice /ˈnəʊtɪs/ v. 注意到；留心；通知 n. 注意；通知 教材原句：I just passed by that park and noticed there is a lot of garbage. → 替换例句：We noticed them playing football in the playground. 用法解析 · 作动词，常见搭配： ① notice sb do sth：注意到某人做某事（全过程） ② notice sb doing sth：注意到某人正在做某事 · 作名词，常见短语：take notice of（注意到）、come to sb's notice（引起某人注意）。 例句 · I noticed Tom take away your pen. · Until further notice, the library will be closed on Sundays. 5. support /səˈpɔːt/ v. & n. 支持；资助；抚养 教材原句：The workers there taught me how to best support them. → 替换例句：I have a wife and two children to support. 用法解析 · 作动词，意为“支持；资助；抚养；拥护”；作名词，意为“支持；资助”。 · 常见短语 in support of...（支持……）。 例句 · Come on! I'll support you. · Only a few people spoke in support of the proposal. 二、重点短语讲解 1. on the side of... 在……的一侧 教材原句：Maybe you can plant trees and collect rubbish on the side of the road to protect the environment. → 替换例句：There is a small shop on the side of the street. 用法解析 · 介词短语，side 表示“一侧；一边”，后接地点名词。 例句 · We sat on the side of the lake and watched the sunset. 2. try one's hand 尝试 例句：He decided to try his hand at painting after retiring. 用法解析 · 固定短语，意为“尝试（做某事）”，one's 需根据主语替换为形容词性物主代词。 例句 · She tried her hand at baking and made a delicious cake. 3. be responsible for... 对……负责任 教材原句：You will be responsible for answering questions and providing information for donors. → 替换例句：As a monitor, you are responsible for keeping the class in order. 用法解析 · 固定短语，responsible 为形容词，意为“负责的；有责任的”，for 后接名词、代词或动名词。 例句 · Parents are responsible for the education of their children. 4. leave... behind 留下；扔下 例句：Don't leave your books behind when you leave the classroom. 用法解析 · 动词短语，意为“留下；扔下；把……抛在后面”。 例句 · He left his phone behind in the taxi. 三、重点句式讲解 1. “May I...?” 句型 教材原句：May I help you? → 替换例句：May I use your dictionary? 句式结构 · 情态动词 may 表示“可以”，用于提出委婉的请求或询问对方的态度及意见。 · 肯定回答：Yes, you may. / Sure. / Certainly. / Of course. · 否定回答：No, you can't/mustn't. / Sorry, you can't. / You'd better not. 例句 · —May I go shopping with my friends? —Sure. / I'm sorry you can't. 2. “one of + 可数名词复数” 结构 教材原句：Julia is one of the volunteers to clean the park. → 替换例句：The Horsetail Fall is one of Yosemite National Park's most amazing views. 句式结构 · 意为“……之一”，该结构作主语时，谓语动词要用第三人称单数形式。 · 拓展：one of + the + 形容词最高级 + 可数名词复数 表示“最……的……之一”。 例句 · One of my friends comes from Canada. · She is one of my best friends. 四、语法讲解 1. if 引导的条件状语从句 教材原句：If you like animals, you can help care for pets at an animal shelter. 基本概念 条件状语从句表示主句动作发生的前提、条件、假想和推测等。if 引导的条件状语从句表示主句发生的条件，表示假如从句动作发生，主句动作就会发生。 句子构成 · if 引导的条件状语从句 + 主句 · 主句 + if 引导的条件状语从句 时态呼应 当主句为以下三种情况时，条件状语从句用一般现在时表示将来： 主句情况 例句 主句为一般将来时 If he comes, he will bring his violin. 主句的谓语中含有 can、may、must 等情态动词 If you want to lose weight, you must eat less meat. 主句为祈使句 If you are not strong enough, please don't take part in such an activity. 句型转换 · 借助“祈使句 + and/or + 陈述句（一般将来时）”转换： If you study hard, you will pass the exam easily. = Study hard, and you will pass the exam easily. · 借助 without 或 with 转换： If there is no water, fish will die. = Fish will die without water. 2. 动词不定式作宾语 教材原句 ① Many people like to go to the park... ② We want to clean the Greenwood Park in the centre of the city. 基本概念 动词不定式是一种非谓语动词形式，构成为“to + 动词原形”，其中 to 为动词不定式符号，有时可以省略。动词不定式结构在句中可以作主语、宾语、表语、宾语补足语、定语或状语等。 常见动词（短语）后接动词不定式作宾语 · plan、want、hope、expect、decide、agree、help、choose、would like 等。 例句 · He wants to learn Japanese. · They agreed to help us with the project. 特殊动词后接不定式与动名词的区别 动词 接不定式 接动名词 try try to do sth：尽力做某事 try doing sth：尝试做某事 remember/forget remember/forget to do sth：记得/忘了要做某事 remember/forget doing sth：记得/忘了做过某事 stop stop to do sth：停下来去做某事（另一件事） stop doing sth：停止做某事（正在做的事） go on go on to do sth：接着去做某事（另一件事） go on doing sth：接着做某事（正在做的事） ( 1 ) 学科网（北京）股份有限公司 $