Unit4语法专项课件— by + doing 表方式, 方法 2025-2026学年鲁教版(五四学制)八年级英语下册

教学课件 鲁教（五四制）英语八年级下册 Unit4 语法专项—— by + doing 表方式/方法 全解精讲+分层练习 1 学习目标 1.掌握 by + doing 结构的含义与基本用法 2.能准确使用 by + doing 回答 How 问句 3.熟记 by 的其他四类常见用法 4.分清 by / with / in 三个介词的用法区别 5.能完成单选、填空、句型转换等各类题型 by + doing 核心含义 by 此处意为：通过、凭借、用……方法 后面必须接动词-ing形式 结构：主语 + 谓语 + by + doing sth. 语法功能：在句中作方式状语 专门回答：How do you…?（你如何……？） by + doing 基本结构 肯定句结构：主语 + 动词 + by + doing 例句：I learn English by listening to tapes. 译文：我通过听录音学英语。 问句：How do you learn English? 答句必须用：By + doing… 基础例句（1） 1.You can improve your pronunciation by reading aloud. 你可以通过大声朗读来提升发音。 2.He becomes smarter by asking more questions. 他通过多问问题变得更聪明。 3.They keep healthy by running every morning. 他们通过每天跑步保持健康。 基础例句（2） 1.We can save water by turning off the tap. 我们可以通过关水龙头来节约用水。 2.She improves writing by keeping a diary. 她通过记日记提高写作。 3.You can relax by listening to soft music. 你可以通过听轻音乐放松。 by + doing 用法要点 1.by 后面只能加 -ing，不能加动词原形 2.问句用 How，答句用 By doing… 3.可放在句首，后面加逗号： By practicing, you can make progress. 4.否定形式：don’t/doesn’t + 动词 + by doing 对 by doing 提问 划线部分是 by doing → 用 How 提问 例：I learn math by doing exercises. 提问：How do you learn math? 一般现在时：I/you/we → do；he/she → does 含 can 句子：直接把 can 提前 by 的其他用法（1）——交通工具 by + 交通工具：乘坐…… 注意：名词前不加冠词 a/an/the 例句：I go to school by bus. 同类：by bike / by car / by plane / by subway 同义：take a bus = go … by bus by 的其他用法（2）——位置 by + 地点名词：在……旁边 例句：There is a tree by the river. 译文：河边有一棵树。 同义：near / next to 常见搭配：by the lake / by the road by 的其他用法（3）——固定搭配 by hand：用手工、亲手 by oneself：独自、亲自 例句：He made the model by hand. 例句：She can finish it by herself. 考试常考短语，必须熟记 by 的其他用法（4）——时间 by + 时间：到……时为止；不迟于 句子常用完成时 例句：By 7 o’clock, I had finished breakfast. 译文：到7点为止，我已经吃完早饭。 常考：by the time… 易混辨析：by / with / in by：通过动作/方式，后接 doing with：用工具/身体部位 in：用语言/颜色/材料 口诀：方式用 by，工具用 with，语言用 in by / with / in 对比表格 介词 用法 后接 例句 by 通过方式 doing/交通工具 by bus with 使用工具 名词（加冠词） with a pen in 使用语言 语言/颜色 in English 基础单选 1.—How do you practice listening? —I do it ______ watching English movies. A. by B. with C. in D. on 2.We can stay safe ______ following the rules. A. by B. to C. for D. with 3.He learns cooking ______ his mother. A. by B. from C. with D. in 4.You can improve your skills ______ a dictionary. A. by B. with C. in D. on A A B B 5.They went to the town ______ bus. A. by B. in C. on D. with 6.She improves her reading ______ reading word groups. A. by B. with C. in D. on 7.We can save time ______ taking the subway. A. by B. to C. for D. in 8.—How do you learn grammar? —______ doing exercises. A. In B. With C. ByD. On A A A C 用 by/with/in 填空 1.He writes a letter ______ a black pen. 2.They learn English ______ watching videos. 3.Don’t write ______ red ink. 4.We talk with each other ______ Chinese. 5.She makes toys ______ hand. with by in in by 句型转换 1.I learn English by reading novels.（提问） ______ ______ you learn English? 2.She can study well by taking notes.（一般疑问句） ______ she study well by taking notes? 3.He improves math by doing exercises.（否定句） He ______ improve math by doing exercises. How do Can doesn’t 4.They keep healthy by running.（提问） ______ ______ they keep healthy? 5.We can learn better by asking questions.（同义句） We can learn better ______ ______ questions. 6.She learns history by watching videos.（提问） ______ ______ she learn history? How do How does by asking 1.We write ______ a pen, but we can’t write ______ red. A. with; in B. by; with C. in; with D. with; by 2.—How do you remember words? —I do it ______ making word cards. A. by B. with C. in D. on 3.The boy can sing songs ______ English very well. A. by B. in C. with D. on 4.He moved the heavy box ______ a rope. A. by B. in C. with D. on 5.We know the world ______ reading books. A. by B. with C. in D. to A A B C A 提升填空 1.She plays the piano ______ her fingers. 2.They keep in touch ______ sending messages. 3.Please write the sentence ______ English. 4.He cut the apple ______ a knife. 5.We can get better ______ practicing every day. with by in with by 易错题总结（1） 1.by 后必须加 doing，不能加原形 2.How 提问，必须用 by doing 回答 3.by + 交通工具，名词前不加冠词 4.learn from sb. 向某人学习，不能用 by 5.by the time 引导句子常用完成时 易错题总结（2） 1.工具用 with，语言用 in，方式用 by 2.by hand / by oneself 是固定搭配 3.否定句：don’t/doesn’t + 动词 + by doing 4.句首 By doing…，后面必须加逗号 5.同义转换：by doing = through doing 课堂总结（1） 1.核心结构：by + doing 表方式/方法 2.回答：How…? → By doing… 3.by 四类用法：方式、交通、位置、时间 4.三大辨析：by / with / in 5.所有用法围绕“方式”展开 课堂总结（2） 1.先判断：方式→by；工具→with；语言→in 2.看到 -ing 优先考虑 by 3.看到 How 问句优先用 by doing 4.固定搭配必须背熟 5.多做题，多对比，熟练掌握 教学课件 Unit4 语法专项—— by + doing 表方式/方法 Thank you for listening! 26 $