Unit4重点知识讲解 2025-2026学年译林版八年级英语上册

译林英语八上Unit4重点知识讲解 一、核心单词 1. complete /kəmˈpliːt/ adj. 完成；结束；全部的 v. 完成 用法： 作形容词：表示“完整的；彻底的”，副词形式为 completely。 作动词：表示“完成”，常搭配“工程、项目”等。 易混辨析： 易混词 用法及例句 complete 完成整体工作：We completed the project on time. end 侧重“结束”，常与介词搭配：The movie ended at 10 p.m. finish 完成工作的最后部分：I finished my homework. 例句： The work is complete. He completed the task successfully. 2. fill...with... 使……充满 用法：表示“用……填充……”，强调动作；同义短语 be filled with（被动），be full of（表状态）。 例句： He filled the glass with water. The room is filled with laughter. 3. surprise /səˈpraɪz/ v. 使惊奇；使感到意外 n. 惊奇；惊喜 用法： 作动词：宾语通常是人。 作名词：to one’s surprise（令某人惊讶的是）；in surprise（惊奇地）。 例句： The news surprised everyone. To our surprise, he won the game. 4. mess /mes/ n. 杂乱；不整洁 v. 弄乱 用法： 作名词：常用短语 in a mess（乱七八糟）。 作动词：mess up（弄乱；搞砸）。 例句： Your room is in a mess. Please tidy it up. He messed up the plan. 5. tie /taɪ/ v. (用线、绳等)系；拴；捆 n. 领带 用法： 作动词：短语 tie...to...（把……系到……上）。 作名词：表“领带”。 例句： Please tie your shoes. He wears a tie to work. 二、重点短语 1. be crazy about 热衷于 例句：He is crazy about playing basketball. 2. power cut 断电；停电 例句：We had a power cut last night. 3. in a mess 乱七八糟 例句：After the party, the house was in a mess. 4. not only...but also... 不仅……而且…… 例句：She not only sings well but also dances beautifully. 三、核心句式 1. “It takes/took (sb) some time to do sth” 句型 句式结构：表示“（某人）花费多长时间做某事”，it 是形式主语，真正的主语是动词不定式。 易混辨析： 易混词 用法及例句 take 主语为it：It takes me an hour to finish the work. spend 主语为人：I spent an hour on the work. cost 主语为物：The book cost me 20 yuan. pay 主语为人：I paid 20 yuan for the book. 例句： It took me two hours to finish the homework. 2. “not only...but also...” 句型 句式结构：连接并列成分，强调后者；连接两个主语时，谓语动词遵循“就近原则”；连接两个句子时，not only 后的句子要用倒装。 例句： Not only he but also I am interested in music. Not only did he come but also he brought a gift. 四、语法精讲 1. 祈使句 ① 肯定形式 Do型：动词原形 + 其他：Please sit down. Be型：Be + 表语 + 其他：Be quiet! Let型：Let + 宾语 + 动词原形 + 其他：Let’s go together. ② 否定形式 Do型/Be型：Don’t + 动词原形/Be + 其他：Don’t talk in class. Let型：Don’t let + 宾语 + 动词原形 + 其他 / Let + 宾语 + not + 动词原形 + 其他：Don’t let him go. ③ 特殊用法 用 No 开头表示禁止：No smoking! 前加 Do 加强语气：Do remember to call me. 2. 用 had better 和 should 提建议 ① had better 意为“最好”，语气强烈，后接动词原形；否定形式为 had better not。 例句：You had better finish the work today. ② should 意为“应该”，语气较委婉，表义务、建议或推断；否定形式为 should not（缩写为 shouldn’t）。 例句：You should listen to the teacher carefully. ( 1 ) 学科网（北京）股份有限公司 $