Unit 1 语法专项课件-频度副词+一般现在时 2025-2026学年北师大版英语七年级下册

教学课件 北师大英语七年级下册 Unit1 语法专项——频度副词 + 一般现在时 全解精讲+分层练习 1 学习目标 1.掌握常见频度副词的含义、频率排序及位置规则 2.熟练运用一般现在时的三种用法及句子结构 3.牢记动词第三人称单数变化规则，能正确变形 4.会用How often对频率提问，完成各类句型转换 语法一 频度副词 定义与核心功能 频度副词用于表示动作发生的频率、习惯性程度 常与一般现在时连用，让表达更精准体现动作重复次数 核心作用是修饰动词或形容词，说明“多久做一次” 频率有明确高低层级，需按逻辑选择合适副词 例句：She often reads books.（说明读书的频繁程度） 常见频度副词含义与频率排序 频度副词 中文含义 大致频率 例句 always 总是 100% He always gets up early. usually 通常 约80% They usually go to school by bike. often 经常 约60% I often play football on weekends. sometimes 有时 约40% She sometimes eats out. seldom 很少 约20% He seldom watches TV on weekdays. never 从不 0% We never be late for class. 频度副词 关键位置规则（必考） 1.修饰be动词/情态动词时，置于其后 例句：She is always kind.；I can never understand him. 2.修饰实义动词时，置于其前 例句：He often plays basketball.；They usually walk to school. 3.sometimes特殊用法：可放句首、句中、句末 例句：Sometimes I go hiking.；I go hiking sometimes. 频度副词易错位置对比 正确用法 错误用法 原因 He is often late. He often is late. be动词后接频度副词 She usually reads. She reads usually. 实义动词前接频度副词 I never eat fast food. I eat never fast food. 实义动词前接频度副词 Sometimes we go swimming. We sometimes go swimming. sometimes位置灵活（两种均对） 语法一 小练手·频度副词填空 1.My mother __________ (never/usually) cooks dinner for us. 2.He __________ (seldom/never) eats ice cream because he doesn’t like it. 3.__________ (Sometimes/Often) I visit my grandparents on Sundays. 4.They __________ (are often/often are) busy with their homework. 5.She __________ (often/never) goes to the library after school. She likes reading. usually never Sometimes are often often 语法二 一般现在时 定义与三种用法 用法一：表示经常性、习惯性的动作（常与频度副词连用） 例句：I get up at 7 o’clock every morning. 用法二：表示客观事实、真理或自然规律 例句：The moon goes around the earth. 用法三：表示现在的状态、爱好或能力 例句：He likes playing the guitar.；She speaks English well. 一般现在时句子结构（主语非三单） 句型 结构 例句 肯定句 主语 + 动词原形 + 其他 We play football every Saturday. 否定句 主语 + don’t + 动词原形 + 其他 They don’t watch TV on weekdays. 一般疑问句 Do + 主语 + 动词原形 + 其他？ Do you like reading? 特殊疑问句 疑问词 + Do + 主语 + 动词原形 + 其他？ How do you go to school? 一般现在时句子结构（主语三单） 句型 结构 例句 肯定句 主语 + 动词三单 + 其他 He plays football every Saturday. 否定句 主语 + doesn’t + 动词原形 + 其他 She doesn’t watch TV on weekdays. 一般疑问句 Does + 主语 + 动词原形 + 其他？ Does he like reading? 特殊疑问句 疑问词 + Does + 主语 + 动词原形 + 其他？ How does she go to school? 动词第三人称单数 变化规则（一） 一般情况，直接在动词词尾加 -s 例：work → works，like → likes，play → plays 以 s, x, ch, sh, o 结尾，在词尾加 -es 例：watch → watches，go → goes，pass → passes，wash → washes 动词第三人称单数 变化规则（二） 以辅音字母 + y 结尾，先变 y 为 i，再加 -es 例：study → studies，fly → flies，try → tries 特殊变化（需牢记） have → has，do → does 易错提醒：以元音字母 + y 结尾，直接加 -s 例：play → plays，stay → stays（元音字母a + y） 动词三单 变化规则 小练手 1.look → __________ 2. go → __________ 3. study → __________ 4.have → __________ 5. wash → __________ 6. fly → __________ 7.do → __________ 8. like → __________ 9. pass → __________ 10.try → __________ looks goes studies has washes flies does likes passes tries 一般现在时 核心易错点提醒 1.否定句/疑问句中，doesn’t/don’t 后必接动词原形 错误：He doesn’t plays football.（应为 play） 2.主语三单时，肯定句动词必须变三单，不可用原形 错误：She like music.（应为 likes） 3.客观真理用一般现在时，不受时间状语影响 例句：The teacher said the earth goes around the sun. 4.频度副词与一般现在时连用，位置不可混淆 语法二 小练手·动词适当形式填空 1.I __________ (get) up at 6:30 every morning. 2.He _____________ (not like) coffee; he likes tea. 3.My mother __________ (cook) dinner every evening. 4.__________ (do) your father __________ (go) to work by bus? 5.They often __________ (visit) their grandparents on holidays. get doesn’t like cooks Does go visit 综合语法 对频率提问（How often） 对频度副词或频率短语提问，用 How often（多久一次） 基本结构：How often + 一般疑问句？ 例句:— How often do you exercise?（你多久锻炼一次？） — Every day. / Twice a week. / Sometimes. 回答方式：可用频度副词、次数短语或时间间隔表达 例：Seldom. / Three times a month. / Once a year. 小练手 1.She usually goes to the cinema.（对划线部分提问） → __________ __________ does she go to the cinema? 2.He plays basketball twice a week.（对划线部分提问） → __________ __________ does he play basketball? 3.They never eat fast food.（对划线部分提问） → __________ __________ do they eat fast food? How often How often How often 单元语法 综合小练·单选（一） 1.My sister __________ to school by bike every day. A. go B. goes C. going 2.I __________ late for school; I’m always on time. A. am never B. never am C. don’t never 3.__________ do you visit your uncle? — Once a month. A. How long B. How often C. How many B A B 单元语法 综合小练·单选（二） 4.Tom __________ TV on weekdays; he only watches it on weekends. A. don’t watch B. doesn’t watch C. doesn’t watches 5.The sun __________ in the east and sets in the west. A. rise B. rises C. rose 6.__________ your brother often __________ sports after school? A. Do; play B. Does; play C. Does; plays B B B 单元语法 综合小练·词形填空 1.We often __________ (play) games in the park. 2.She _____________ (not have) breakfast at home. 3.My father __________ (drive) to work every morning. 4.__________ (do) your mother __________ (like) reading? 5.He sometimes __________ (go) to the bookstore on weekends. play doesn’t have drives Does like goes 单元语法 综合小练·句型转换 1.He often plays football after school.（否定句） → He __________ often __________ football after school. 2.They usually walk to school.（一般疑问句） → __________ they usually __________ to school? 3.She is sometimes late for class.（对划线部分提问） → __________ __________ is she late for class? 4.My mother cooks dinner every evening.（对划线部分提问） → __________ __________ your mother __________ dinner? 5.I never eat chocolate.（用 sometimes 改写） → I __________ __________ chocolate. doesn’t play Do walk How often How often cook sometimes eat 单元语法 综合小练·完成句子 1.他通常周末去游泳。 He __________ __________ swimming on weekends. 2.你多久看一次电影？ __________ __________ do you go to the cinema? 3.我们上学日从不玩电脑游戏。 We __________ __________ computer games on weekdays. usually goes How often never play 单元语法 综合练习题（一） 一、单项选择 1.My brother __________ basketball every afternoon. A. play B. plays C. playing 2.I __________ get up early on Sundays; I like to sleep late. A. don’t usually B. usually don’t C. doesn’t usually 3.__________ do you have English classes? — Every weekday. A. How often B. How much C. How long 4.The earth __________ around the sun. A. go B. goes C. went 5.—__________ your sister like dancing? — Yes, she does. A. Do B. Does C. Is B A A B B 单元语法 综合练习题（二） 二、用所给动词的适当形式填空 6.She often __________ (read) English books in the morning. 7.We _____________ (not watch) TV before finishing homework. 8.My father _____________ (not drive) to work; he walks. 9.__________ (do) they __________ (visit) their friends often? 10.Tom __________ (have) a new bike; he likes it very much. reads don’t watch doesn’t drive Do visit has 单元语法 综合练习题（三） 三、句型转换 11.He usually goes to school by bus.（否定句） → He __________ usually __________ to school by bus. 12.They sometimes play football in the park.（一般疑问句） → __________ they sometimes __________ football in the park? 13.She is never late for work.（对划线部分提问） → __________ __________ is she late for work? doesn’t go Do play How often 单元语法 易错点总结（频度副词） 1.频度副词位置混淆，尤其是be动词与实义动词后的差异 2.sometimes位置灵活，但其他频度副词不可随意换位置 3.对频率提问误用How many/How long，需用How often 4.频度副词与一般现在时搭配错误，用于其他时态 单元语法 易错点总结（一般现在时） 1.主语三单时，肯定句动词未变三单，否定句/疑问句动词变三单 2.doesn’t/don’t 后接动词三单，违背“后接原形”规则 3.客观真理误用其他时态，需始终用一般现在时 4.混淆主语单复数，导致助动词使用错误（do/does） 单元语法 知识框架梳理 一、频度副词 1.核心词汇：always/usually/often/sometimes/seldom/never 2.位置：be动词/情态动词后，实义动词前；sometimes灵活 3.提问：How often + 一般疑问句 二、一般现在时 1.用法：表习惯、客观真理、现在状态 2.结构：非三单（do/don’t），三单（does/doesn’t + 原形） 3.动词三单：加-s/-es，辅音+y变i+es，特殊have→has 教学课件 Unit1 语法专项——频度副词 + 一般现在时 Thank you for listening! 29 $