Unit2语法讲解译林版七年级英语上册

七上Unit2单元语法点拨行为动词的一般现在时【语法讲解】一、概述行为动词都一般现在时用于谈论经常做的事、不受时间限制的客观事实以及人或物的一般特征，这种动词有具体、实际的含义。例如：Danieloftenvisitssciencemuseums.丹尼尔经常参观科学博物馆。（教材P23）He/She/Itdoesnotlikesport.他/她/它不喜欢运动。（教材P23）Doeshe/she/itlikesport?他/她/它喜欢运动吗？（教材P23）Ibrushmyteethtwiceaday.我每天刷两次牙。Heplaystheguitarverywell.他吉他弹得很好。Plantsneedsunlighttogrow.植物需要阳光生长。Theconcertstartsat7:30pm.音乐会晚上7:30开始。二、核心用法场景习惯性或经常性动作常与频率副词（always,usually,often,sometimes,seldom,never）或时间状语（everyday,onweekends,onceaweek）连用。TheyoftengohikingonSundays.他们周日经常去徒步。Hetakesthebustoworkeverymorning.他每天早上乘公交上班。客观事实或现状描述人或事物的特征、能力或当前状态。Shespeaksthreelanguages.她会说三种语言。Thebookbelongstomysister.这本书是我姐姐的。普遍真理或自然规律无论何时都成立的事实，不受时间限制。Theearthmovesaroundthesun.地球绕太阳运转。Waterboilsat100°C.水在100摄氏度沸腾。时刻表或日程安排用于表示按计划或时间表发生的动作（常用于交通、课程等）。a.m.trainleavesat8:00a.m.火车早上8点发车。Classesbeginat9:00everyday.每天9点开始上课。三、行为动词的两种形式根据主语的人称和数的不同，行为动词的一般现在时有两种形式。主语是第一人称的单复数、第二人称的单复数和第三人称复数时，行为动词使用其原形。当主语是第三人称单数时，行为动词使用其第三人称单数形式。第三人称单数形式的变化规则动词（类型）变化规则举例大部分动词加slike→likes live→lives以“辅音字母+y”结尾的动词去掉y，再加iesstudy→studies fly→flies以ch、sh、ss或x结尾的动词加eswatch→watches wash→washesdress→dresses fix→fixes以“辅音字母+o”结尾的动词加esgo→goes do→does部分动词特殊变化have→has四、句式结构肯定句结构：主语+行为动词原形/第三人称单数形式+其他。Ieatbreakfastat7a.m.我每天7点吃早餐。ShestudiesEnglisheveryday.她每天学英语。否定句结构：主语+don't/doesn't+行为动词原形+其他。Idon'tlikecoffee.我不喜欢咖啡。Hedoesn'twatchTVatnight.他晚上不看电视。疑问句结构：Do/Does+主语+行为动词原形+其他？Doyouplayfootball?你踢足球吗？DoessheliveinBeijing?她住在北京吗？【针对练习】一、单项选择。1.Thefirstlesson________at8o’clockandalltheclasses________at5:20.A.begins;end B.beginning,ends C.begins;ends D.begin;end2.Ourschoolartfestivalusually________tilltheendofOctobereveryyear.A.last B.lasts C.willlast D.lasted3.—Look,Simon________anewfootball.—Wow,maybeitishisbirthdaypresent.A.has B.have C.ishaving D.willhave4.Thelittleboyoften________things________becauseit’sagoodwaytolearnscience.A.take…apart B.talk…apart C.takes…apart D.talks…apart5.Mysister,________manyothergirls,________shoppingontheinternetonNovember11everyyear.A.like;like B.like;likes C.likes;likes D.likes;like6.Theshoppingmallnearourschool________for12hoursaday.It________at9:00p.m.A.opens;closes B.opens;isclosed C.isopen;isclose D.isopen;closes7.—Doesyoursisterlikedancing?—Yes,she________.Sheoften________inthedancingroom.A.does;dances B.do;dance C.does;dance D.do;dances8.Mysister_________intheparkeverymorning.Shelikesthecleanairthere.A.isexercising B.exercised C.exercises D.exercise9.Manypeople________toworkbybuseveryday.A.go B.goes C.aregoing D.togo10.—Whatdoyouusuallydoonweekends?—Iusually________myhomeworkinthemorningand________TVintheafternoon.A.do;watch B.does;watches C.do;watches D.does;watch二、根据汉语意思完成句子，每空一词。1.我喜欢在周末读科学书籍。I____________sciencebooksonweekends.2.她每周参观一次科学博物馆。She______thesciencemuseumsonceaweek.3.丹尼尔经常在家拆卸物品来学习它们如何运作。Danieloften______things______athometolearnhowtheywork.4.你的朋友喜欢和你分享绘画作品吗？______yourfriend____________paintingswithyou?5.我们不喜欢在放学后慢跑。We__________________afterschool.6.他想要成为一名设计师来实现梦想。He__________________adesignertomakehisdreametrue.7.你们经常在俱乐部里学习剪纸吗？______youoften____________intheclub?8.桑迪每周用电脑设计漂亮的衣服。Sandy______beautifulclothesontheputereveryweek.9.他的父母不喜欢在空闲时间看电视。Hisparents__________________TVintheirfreetime.10.米莉每天和朋友们一起练习游泳吗？______Millie____________withfriendseveryday?三、按要求完成句子。1.Ilovepaintingwithmyfriends.（第一人称→第三人称单数）She____________withherfriends.2.Theyenjoyreadingsciencebooks.（改一般疑问句）______they______readingsciencebooks?3.HevisitstheScienceClubeveryWednesday.（改否定句）He____________theScienceClubeveryWednesday.4.Milliegoesswimmingonceaweek.（对划线部分提问）____________doesMilliegoswimming?5.Danieltakesthingsapartathome.（对划线部分提问）______doesDaniel______athome?6.Wefixbrokentoysintheclub.（复数→第三人称单数）He______brokentoysintheclub.7.IwanttojointhePaintingClub.（改否定句）I____________tojointhePaintingClub.8.Shelikestofindscienceanswersonline.（改一般疑问句并作肯定回答）—______she______tofindscienceanswersonline?—Yes,____________.9.Theysharehobbiesintheclassroom.（对划线部分提问）____________theysharehobbies?10.Ioftenreadbookswithmyclassmates.（改为第三人称单数否定句）He______often______bookswithhisclassmates.

【答案提示】一、15 ABACB 610 DACAA二、1.likereading 2.visits 3.takes;apart 4.Does;likesharing5.don’tlikejogging 6.want