Unit1语法专项课件-频度副词一般现在时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

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Howoften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：Sheoftenreadsbooks.（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%Healwaysgetsupearly.usually通常约80%Theyusuallygotoschoolbybike.often经常约60%Ioftenplayfootballonweekends.sometimes有时约40%Shesometimeseatsout.seldom很少约20%HeseldomwatchesTVonweekdays.never从不0%Weneverbelateforclass.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：Sheisalwayskind.；Icanneverunderstandhim.2.修饰实义动词时，置于其前例句：Heoftenplaysbasketball.；Theyusuallywalktoschool.3.sometimes特殊用法：可放句首、句中、句末例句：SometimesIgohiking.；Igohikingsometimes.频度副词易错位置对比正确用法错误用法原因Heisoftenlate.Heoftenislate.be动词后接频度副词Sheusuallyreads.Shereadsusually.实义动词前接频度副词Inevereatfastfood.Ieatneverfastfood.实义动词前接频度副词Sometimeswegoswimming.Wesometimesgoswimming.sometimes位置灵活（两种均对）语法一小练手·频度副词填空1.Mymother__________(never/usually)cooksdinnerforus.2.He__________(seldom/never)eatsicecreambecausehedoesn’tlikeit.3.__________(Sometimes/Often)IvisitmygrandparentsonSundays.4.They__________(areoften/oftenare)busywiththeirhomework.5.She__________(often/never)goestothelibraryafterschool.Shelikesreading.usuallyneverSometimesareoftenoften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：Igetupat7o’clockeverymorning.用法二：表示客观事实、真理或自然规律例句：Themoongoesaroundtheearth.用法三：表示现在的状态、爱好或能力例句：Helikesplayingtheguitar.；ShespeaksEnglishwell.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WeplayfootballeverySaturday.否定句主语

+don’t+动词原形+其他Theydon’twatchTVonweekdays.一般疑问句Do+主语+动词原形+其他？Doyoulikereading?特殊疑问句疑问词

+Do+主语+动词原形+其他？Howdoyougotoschool?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HeplaysfootballeverySaturday.否定句主语

+doesn’t+动词原形+其他Shedoesn’twatchTVonweekdays.一般疑问句Does+主语+动词原形+其他？Doeshelikereading?特殊疑问句疑问词

+Does+主语+动词原形+其他？Howdoesshegotoschool?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→__________looksgoesstudieshaswashesfliesdoeslikespassestries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：Hedoesn’tplaysfootball.（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：Shelikemusic.（应为likes）3.客观真理用一般现在时，不受时间状语影响例句：Theteachersaidtheearthgoesaroundthesun.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)upat6:30everymorning.2.He_____________(notlike)coffee;helikestea.3.Mymother__________(cook)dinnereveryevening.4.__________(do)yourfather__________(go)toworkbybus?5.Theyoften__________(visit)theirgrandparentsonholidays.getdoesn’tlikecooksDoesgovisit综合语法对频率提问（Howoften）对频度副词或频率短语提问，用Howoften（多久一次）基本结构：Howoften+一般疑问句？例句:—Howoftendoyouexercise?（你多久锻炼一次？）

—Everyday./Twiceaweek./Sometimes.回答方式：可用频度副词、次数短语或时间间隔表达例：Seldom./Threetimesamonth./Onceayear.

小练手1.Sheusuallygoestothecinema.（对划线部分提问）→____________________doesshegotothecinema?2.Heplaysbasketballtwiceaweek.（对划线部分提问）→____________________doesheplaybasketball?3.Theynevereatfastfood.（对划线部分提问）→____________________dotheyeatfastfood?HowoftenHowoftenHowoften单元语法综合小练·单选（一）1.Mysister__________toschoolbybikeeveryday.A.goB.goesC.going2.I__________lateforschool;I’malwaysontime.A.amneverB.neveramC.don’tnever3.__________doyouvisityouruncle?—Onceamonth.A.HowlongB.HowoftenC.HowmanyBAB单元语法综合小练·单选（二）4.Tom__________TVonweekdays;heonlywatchesitonweekends.A.don’twatchB.doesn’twatchC.doesn’twatches5.Thesun__________intheeastandsetsinthewest.A.riseB.risesC.rose6.__________yourbrotheroften__________sportsafterschool?A.Do;playB.Does;playC.Does;playsBBB单元语法综合小练·词形填空1.Weoften__________(play)gamesinthepark.2.She_____________(nothave)breakfastathome.3.Myfather__________(drive)toworkeverymorning.4.__________(do)yourmother__________(like)reading?5.Hesometimes__________(go)tothebookstoreonweekends.playdoesn’thavedrivesDoeslikegoes单元语法综合小练·句型转换

1.Heoftenplaysfootballafterschool.（否定句）→He__________often__________footballafterschool.2.Theyusuallywalktoschool.（一般疑问句）→__________theyusually__________toschool?3.Sheissometimeslateforclass.（对划线部分提问）→____________________isshelateforclass?

4.Mymothercooksdinnereveryevening.（对划线部分提问）→____________________yourmother__________dinner?5.Inevereatchocolate.（用sometimes改写）→I____________________chocolate.doesn’tplayDowalkHowoftenHowoftencooksometimeseat单元语法综合小练·完成句子1.他通常周末去游泳。He____________________swimmingonweekends.2.你多久看一次电影？____________________doyougotothecinema?3.我们上学日从不玩电脑游戏。We____________________computergamesonweekdays.usuallygoesHowoftenneverplay单元语法综合练习题（一）一、单项选择1.Mybrother__________basketballeveryafternoon.A.playB.playsC.playing2.I__________getupearlyonSundays;Iliketosleeplate.A.don’tusuallyB.usuallydon’tC.doesn’tusually3.__________doyouhaveEnglishclasses?—Everyweekday.A.HowoftenB.HowmuchC.Howlong4.Theearth__________aroundthesun.A.goB.goesC.went5.—__________yoursisterlikedancing?—Yes,shedoes.A.DoB.DoesC.IsBAABB单元语法综合练习题（二）二、用所给动词的适当形式填空6.Sheoften__________(read)Englishbooksinthemorning.7.We_____________(notwatch)TVbeforefinishinghomework.8.Myfather_____________(notdrive)towork;hewalks.9.__________(do)they__________(visit)theirfriendsoften?10.Tom__________(have)anewbike;helikesitverymuch.readsdon’twatchdoesn’tdriveDovisithas单元语法综合练习题（三）三、句型转换11.Heusuallygoestoschoolbybus.（否定句）→He__________usually__________toschoolbybus.12.Theysometimesplayfootballinthepark.（一般疑问句）→__________theysometime