Unit 3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 3重点知识讲解 Unit 3 Better you, better me! 一、单词用法讲解 1. bit /bɪt/ n. 有点；小量 教材原句：I'm finding it a bit challenging. → 替换例句：It is a bit cold today, so you'd better wear a coat. 用法解析 常用搭配 a bit 意为“有点儿；稍微”，一般用于修饰形容词或副词的原级或比较级，放在所修饰词的前面，相当于 a little。 修饰不可数名词时，后面要加 of，即 a bit of + 不可数名词。 易混辨析 易混词组 用法及例句 a bit 修饰不可数名词时需加 of；否定形式为 not a bit，意为“一点也不”。例：There is a bit of water in the bottle. a little 可直接修饰不可数名词；否定形式为 not a little，意为“非常；很”。例：There is a little water in the bottle. 例句 I feel a bit tired after running for 30 minutes. We are not a bit afraid of the difficulty. 2. describe /dɪˈskraɪb/ v. 描述；形容 教材原句：（单词表核心词） → 替换例句：Can you describe your new school to us? 用法解析 作及物动词，后接名词、代词或从句作宾语，常用搭配 describe sth to sb（向某人描述某物）、describe sb/sth as（把某人/某物描述为……）。 名词形式为 description，意为“描述；描写”。 例句 She described the beautiful scenery in her hometown to us. The teacher described the boy as a smart and hard-working student. 3. proud /praʊd/ adj. 自豪的；骄傲的 教材原句：What are you proud of about yourself? → 替换例句：I am proud of my brother for winning the competition. 用法解析 作形容词，常用搭配 be proud of（为……感到骄傲）、be proud to do sth（做某事很自豪）。 同义短语为 take pride in（以……为荣）。 例句 All the Chinese are proud of our great country. She is proud to be a member of the school music club. 4. born /bɔːn/ v. 出生；形成 教材原句：I was born there. → 替换例句：Wang Yaping was born in a small village in Shandong in 1980. 用法解析 常用短语 be born，意为“出生；产生；形成”，常用于一般过去时的句子中，即 was/were born。 表示出生的地点或时间时，后面接 at、in 或 on 构成的短语。 还可作形容词，只用于名词前作定语，意为“天生的”，如 a born leader（天生的领导者）。 例句 She was born on March 4, 1999. Jack is a born teacher and he loves teaching very much. 5. against /əˈɡenst/ prep. 反对；违反 教材原句：Once we played against a team from another city. → 替换例句：They are strongly against the new plan. 用法解析 常见用法： ① 意为“（在比赛或战斗中）对（某人或某事物）”，常与 play、fight 等词连用。 ② 意为“反对；违背”，其反义词为 for。 ③ 表示位置，意为“靠着；倚着”。 ④ 表示“碰；撞”。 ⑤ 表示“逆”。 例句 The soldiers fought against the enemy bravely. He stood leaning against the wall. The rain beat against the windows. 6. final /ˈfaɪnl/ adj. 最后的；决定性的 n. 期终考试；决赛 教材原句：The final score was fifty-four to fifty-one. → 替换例句：We will take part in the football final next week. 用法解析 作形容词，意为“最后的；决定性的”。 作名词，意为“期终考试；决赛”。 副词形式为 finally，意为“最后；最终”，相当于 at last 和 in the end。 例句 Many people regard sleeping as the final thing they have to do for daily activities. How did Amy finally deal with the broken plate pieces? 7. encourage /ɪnˈkʌrɪdʒ/ v. 鼓励；激励 教材原句：They all encouraged me. → 替换例句：His teacher often encourages him to study hard. 用法解析 作及物动词，常用搭配 encourage sb to do sth（鼓励某人做某事）。 名词形式为 encouragement，意为“鼓励；鼓舞；起激励作用的事物”。 反义词为 discourage，意为“使灰心；使泄气”。 例句 The song always encourages people to work together. He needs no encouragement to continue his work. 8. except /ɪkˈsept/ prep. 除……外 教材原句：I get average grades in all my subjects except English. → 替换例句：All the trees lost their leaves except the fir tree. 用法解析 作介词，意为“除……之外”，后常加名词或代词作宾语，常用于指同类事物的排除，即从整体中除掉一部分。 易混辨析 易混词 （组） 用法及例句 except 表示“除了……之外”，常用于指同类事物的排除，不可用于句首。例：Wang did well in all subjects except sports. except for 表示“除了……之外”，相当于 except，可强调整体中的不足之处，可用于句首。例：He is a good person to depend on except for his carelessness. besides 表示“除……之外（还）”，整体中包括了除去的那部分。例：Not many people came besides those wives. but 表示“除……之外”，常与 no one、none、nothing 等连用，可与 except 互换。例：No one knows that secret but John. 例句 All the students have gone to the science museum except Tom. 9. mistake /mɪˈsteɪk/ n. 错误；失误 v. 弄错；误解 教材原句：Although I'm a little better at English, sometimes I make bad mistakes. → 替换例句：Be careful, or you'll make the same mistake. 用法解析 作名词，为可数名词，意为“错误；失误”，常用搭配 make mistakes（犯错误）、make a mistake（犯一个错误）、make mistakes in...（在……方面犯错）。 作动词，过去式/过去分词为 mistook/mistaken，常用搭配 mistake... for...（错把……当成……）。 短语 by mistake 意为“错误地”，常用作状语。 例句 She always makes mistakes in grammar. Someone took my cup by mistake. 二、重点短语讲解 1. be proud of 为……感到骄傲 教材原句：What are you proud of about yourself? → 替换例句：My parents are proud of my progress in English. 用法解析 固定短语，proud 为形容词，意为“自豪的；骄傲的”，of 后接名词、代词或动名词。 同义短语：take pride in。 例句 You always do your best. I am proud of you! All the Chinese are proud to see the national flag flying high. 2. be nervous about 对……感到紧张 教材原句：I was nervous about singing in front of all my classmates. → 替换例句：I was a little nervous about the exam tomorrow. 用法解析 nervous 为形容词，意为“紧张不安的”，about 为介词，后接名词、代词或动名词等作宾语。 例句 She is nervous about performing in public. He felt nervous about the job interview. 3. make mistakes 犯错误 教材原句：Although I'm a little better at English, sometimes I make bad mistakes. → 替换例句：Don't be afraid of making mistakes when learning a new language. 用法解析 mistake 为可数名词，make mistakes 表示“犯错误”，也可表达为 make a mistake；make mistakes in... 表示“在……方面犯错”。 例句 She always makes mistakes in grammar. Everyone makes mistakes sometimes. 4. be supposed to 应该 例句：You are supposed to finish your homework before dinner. 用法解析 固定短语，意为“应该；被期望”，后接动词原形，可用来表示义务、责任或建议。 例句 We are supposed to arrive at the station on time. You are not supposed to smoke in the library. 5. come up with 想出 例句：Can you come up with a good idea for the class party? 用法解析 动词短语，意为“想出（主意、办法等）”，宾语多为表示主意、计划等的名词。 例句 He came up with a plan to solve the problem. We need to come up with a new strategy. 三、重点句式讲解 1. “it's one's turn (to do sth)” 句型 教材原句：Finally, it was my turn. → 替换例句：Tonight it's my turn to cook. 句式结构 固定句型，意为“轮到某人（做某事）”，to do sth 结构可省略，其中 turn 是可数名词，意为“轮到的机会”。 联想拓展 in turn：依次地；轮流地 by turns：轮流地；交替地 take turns (to do sth)：轮流（做某事） 例句 The girls wipe the tables after meals in turn. The players take turns to play the stones on the game board. 2. “祈使句 + and/or + 陈述句” 句型 例句：Work hard and you will pass your examination. 句式结构 当前后两部分之间为并列和顺承关系时，用 and 连接；当前后两部分之间为转折关系时，用 or 连接。 例句 Hurry up, or you will miss the train. Listen carefully and you will understand the problem. 四、语法讲解 1. 动名词（短语）作主语 教材原句：Playing basketball is my interest. → 替换例句：Eating vegetables is good for your health. 用法解析 动名词（短语）可以作主语。在一般现在时的句子中，当一个动名词（短语）作主语时，谓语动词用第三人称单数形式；当两个及两个以上的动名词（短语）作主语时，实义动词用原形，be 动词用 are。 例句 Doing exercise and having a balanced diet help you lose weight. Drinking some water and milk is very good for you. 2. 并列句 教材原句 ① He was happy to teach me, and we often sang together. ② My friend Lisa, however, is talented and smart. 含义 并列句是指由并列连词 and、but、or 等把两个或两个以上的简单句连在一起而构成的句子。 构成 简单句 + 并列连词 + 简单句 并列连词 ① 表示并列和顺承关系的连词：and（和；与；然后） ② 表示转折关系的连词：but（但是；然而） ③ 表示选择关系的连词：or（或者） 例句 They are watching TV, and the others are listening to the radio. John likes playing basketball, but he didn't play it yesterday. The children can go with us, or they can stay at home. ( 1 ) 学科网（北京）股份有限公司 $