Unit 5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 5重点知识讲解 Unit 5 Work education 一、单词用法讲解 1. leave /liːv/ v. 离开；留下；遗忘 n. 休假；假期 教材原句：I have to leave now. → 替换例句：Terry does not want to leave Beijing. 用法解析 · 作动词，既可作及物动词，也可作不及物动词： ① leave+地点：离开某地 ② leave for+地点：动身去某地 ③ leave+地点+for+地点：离开某地去某地 ④ leave sb/sth+地点状语：把某人/某物落在某地 ⑤ leave sb alone：不打扰某人；让某人独自待着 · 作名词，意为“休假；假期”，常用短语 ask for leave（请假）。 例句 · We'll leave for Paris this Friday. · I left my keys in the classroom. · Only one or two people asked for leave. 2. prepare /prɪˈpeə(r)/ v. 准备；预备 教材原句：I'm going to help my parents prepare dinner. → 替换例句：We need to prepare for the coming exam. 用法解析 · 作及物动词，常见搭配： ① prepare + n./pron.：准备某事/物 ② prepare sth for sb：为某人准备某物 ③ prepare to do sth：准备做某事 ④ prepare for sth：为某事做准备（相当于 get ready for sth） ⑤ prepare sb sth：为某人/物准备某物 · 名词形式为 preparation，意为“准备；预备；准备工作”。 例句 · Preparations for the activity started very early. · She prepared a birthday cake for her sister. 3. whether /ˈweðə(r)/ conj. 是否；不论 教材原句：Teenagers should often do some physical work, whether that means household chores, working on a farm, or finding a physical job. → 替换例句：They can help you decide whether to ask a doctor for help. 用法解析 · 作连词，常见用法： ① whether to do sth：是否做某事 ② 引导名词性从句（主语、宾语、表语） ③ 引导让步状语从句，意为“不管；无论” 易混辨析 易混词 相同点 不同点及例句 whether 都可引导宾语从句，意为“是否” 可以紧接着 or not 且位于其之前。 例：Nobody knows whether or not the technique works. if 都可引导宾语从句，意为“是否” 一般不与 or not 紧挨着；可引导条件状语从句，意为“如果”。 例：I'm not sure if it is the right road or not. 例句 · Whether they consider this opinion or not is not clear. · Whether it's the beginning of the night or the middle of the night, if you've been awake for 20 or 30 minutes, get up and reset. 4. above /əˈbʌv/ prep. 在……上面；超过 adj. 上面的；上述的 adv. 在上面 教材原句："Take your sickle, bend down, hold the rice stems, and cut them at 15—25 centimetres above ground level," said the farmer. → 替换例句：We cannot accept children above the age of 10. 用法解析 · 作介词，意为“在……之上”（不一定是垂直上方，两者不接触）；也可意为“超过；多于；大于”。 易混辨析 易混词 用法及例句 above 作介词，意为“在……之上”，不一定是垂直上方，两者不接触。 例：There is a light above the desk. on 作介词，意为“在……上面”，彼此互相接触，一物在另一物之上。 例：There's a book on the desk. over 作介词，意为“在……之上”，表示在正上方，二者垂直但不接触。 例：Can you see the bridge over the river? 例句 · Please look at the bird above the box. · The temperature is above 30℃ today. 5. taste /teɪst/ v. 尝；尝出 n. 味道；爱好 教材原句：The rice tasted much sweeter than before. → 替换例句：The cook tastes the soup and says, "Wow! It tastes good." 用法解析 · 作系动词，意为“尝起来”，后接形容词作表语。 · 作实义动词，意为“品尝；体验”。 · 作名词，意为“味道”，形容词形式为 tasty（美味的）。 常见搭配 · taste like：尝起来像…… · have a taste：尝一尝 例句 · It has a good taste. · The cake tastes like chocolate. 6. serve /sɜːv/ v. 可用作；提供；服务 教材原句：He served as a bridge for villagers in the mountains. → 替换例句：The dictionary will serve as a necessary tool and bridge for spreading Weiqi culture. 用法解析 · 作动词，常见用法： ① serve as：担任（职务）；可用作 ② serve sth with sth：用某物配某物 ③ serve sth to sb / serve sb sth：用某物招待某人；端上某物 · 名词形式为 service，意为“服务；兵役”。 例句 · She served a delicious lunch to us. · The sofa will serve as a bed for a night or two. 7. expect /ɪkˈspekt/ v. 期待；预料；盼望 教材原句：But when I think of the expecting eyes of the villagers, I am filled with strength. → 替换例句：They are expected to produce clean and renewable energy. 用法解析 · 作及物动词，常见搭配： ① expect (sb) to do sth：期待（某人）做某事 ② expect that...：期待…… ③ be expected to do sth：被期望做某事 例句 · I expect to hear from you soon. · We expect that he will win the competition. 二、重点短语讲解 1. as a result 结果；因此 教材原句：Our brains and bodies are healthier as a result. → 替换例句：He got up very late today. As a result, he missed the first bus. 用法解析 · 固定短语，其后跟事情的结果，可与 so 进行互换，也可放在句末。 · 拓展短语 as a result of：由于……（相当于 because of） 例句 · He was late as a result of the snow. 2. be careful with 小心…… 例句：You should be careful with the fragile glass. 用法解析 · 固定短语，with 后接名词或代词，表示“小心对待……”。 例句 · Be careful with your money when you go shopping. 3. the sooner..., the better... 越早……越好 教材原句：The sooner you start learning, the better! → 替换例句：The sooner you finish your homework, the sooner you can go out to play. 用法解析 · “the + 比较级, the + 比较级”结构，表示“越……就越……”。 例句 · The more we do for others, the happier we will be. · The more careful you are, the fewer mistakes you will make. 4. not only... but also... 不仅……而且…… 教材原句：It is not only beneficial to our daily life, but also to our development. → 替换例句：She is learning not only French but (also) German. 用法解析 · 用来连接两个并列的句子成分，also 可以省略；连接两个并列主语时，谓语动词的单复数形式遵循“就近原则”。 例句 · Not only my parents but also I am good at cooking. 5. stay in touch with 和……保持联络 教材原句：His great service helped the local people stay in touch with the outside world. → 替换例句：We should stay in touch with our old friends. 用法解析 · 固定短语，with 后接名词或代词，表示“与……保持联系”。 例句 · She stays in touch with her classmates by WeChat. 三、重点句式讲解 1. “the + 比较级, the + 比较级” 结构 教材原句：The sooner you start learning, the better! → 替换例句：The more you practice, the better you will become. 句式结构 · 表示“越……就越……”，前一分句为条件，后一分句为结果。表示一方随另一方程度的变化而变化时，表结果的分句可以用一般将来时。 例句 · The more we read, the more knowledge we will get. · The harder you work, the better grades you will get. 2. “it takes/took sb some time to do sth” 句型 教材原句：It took me ten minutes to learn the basic skills. → 替换例句：It takes him half an hour to finish his homework every day. 句式结构 · 意为“做某事花费某人多长时间”，it 为形式主语，真正的主语是后面的动词不定式短语 to do sth。 例句 · It may take people time to understand and forgive. · It took us two hours to get to the museum. 3. “There be + 名词 + 地点状语” 句型 教材原句：There is nothing difficult in the world. → 替换例句：There are two pencils and a pen in the pencil box. 句式结构 · 表示“某地有某人/某物”，主语是 be 动词后面的名词，be 动词要在人称和数上与后面的名词保持一致（就近原则）。 例句 · There are many tangerines in the basket. · There is a book and two pens on the desk. 四、语法讲解：定语从句 教材原句：Then he had to go down to the Yalong River valley, which is 1,000 metres above sea level. 1. 概念 在主从复合句中作定语的从句称为定语从句。定语从句所修饰的词叫先行词，通常位于定语从句之前。引导定语从句的是关系代词 that、which、who、whom、whose 和关系副词 when、where、why 等。关系代词或关系副词既起连接作用，又充当从句中的一个成分。 2. 初中阶段常见关系词用法 关系词 功能 先行词 例句 that/who 作主语、宾语 人 Do you know the old woman who/that is standing under the tree? whom 作宾语 人 She brought her three friends, none of whom I had met before. that/which 作主语、宾语 物 I love the books which/that are written by Lu Xun. whose 作定语 人/物 I don't know the man whose hair is red. 3. 关键注意点 · 关系代词 that 既可以指人，也可以指物；which 只能指物；who 只能指人。 · 当关系代词在定语从句中作宾语时，可省略。 · whose 表示“……的”，用来修饰名词，作定语。 ( 1 ) 学科网（北京）股份有限公司 $