沪教版牛津英语三年级下句法与语法练习

引言三年级下学期是英语学习打基础的关键时期，句法与语法的掌握程度直接影响后续语言运用能力的提升。本练习旨在帮助同学们巩固本学期所学的核心句法知识与语法要点，通过系统的练习，加深理解，熟练运用，为英语学习的持续进步奠定坚实基础。请同学们在练习过程中认真思考，仔细作答。---第一部分：be动词的运用(am,is,are)核心要点：我用am，你用are，is连着他、她、它；单数名词用is，复数名词全用are。一、单项选择(Choosethebestanswer)1.I______astudent.A.amB.isC.are2.This______aredapple.A.amB.isC.are3.They______mygoodfriends.A.amB.isC.are4.Myfather______tall.He______ateacher.A.is,amB.is,isC.are,is5.______youhappytoday?A.AmB.IsC.Are二、用be动词的适当形式填空(Fillintheblankswith"am","is"or"are")1.This______adog.It______brown.2.We______intheclassroom.3.She______notadoctor.4.______yourmotheranurse?Yes,she______.5.I______tenyearsold.Mybrother______twelve.---第二部分：名词的单复数(SingularandPluralNouns)核心要点：大部分名词复数加-s；以s,x,ch,sh结尾的加-es；部分不规则变化需特别记忆（如：child-children,foot-feet,mouse-mice等，三年级阶段重点掌握规则变化及常见不规则如：book-books,pen-pens,cat-cats,dog-dogs,bus-buses,box-boxes,baby-babies等）。一、写出下列名词的复数形式(Writethepluralformsofthefollowingnouns)1.book→______2.pen→______3.cat→______4.bus→______5.box→______6.baby→______(提示：辅音字母加y结尾，变y为i加es)7.apple→______8.friend→______二、选择正确的单词填空(Choosethecorrectwordtofillintheblanks)1.Ihavetwo______.(book/books)2.Lookatthe______.It'scute.(cat/cats)3.Therearemany______intheclassroom.(desk/desks)4.Shelikes______.(doll/dolls)5.Howmany______doyousee?(bird/birds)---第三部分：代词(Pronouns)核心要点：掌握人称代词主格(I,you,he,she,it,we,they)和宾格(me,you,him,her,it,us,them)的基本用法；掌握物主代词(my,your,his,her,its,our,their)的基本用法。一、用适当的人称代词主格填空(Fillintheblankswithappropriatesubjectpronouns)1.______isaboy.(Tom)2.______aregirls.(LilyandLucy)3.______amastudent.4.Thedogisblack.______isbig.5.MyfatherandIareathome.______arewatchingTV.二、用适当的物主代词填空(Fillintheblankswithappropriatepossessivepronouns)1.Thisis______book.(我)2.Isthis______pencil?(你)3.Heisaboy.______nameisTom.4.Shehasabag.______bagisred.5.Wearefriends.______classroomisbig.---第四部分：基本句型(BasicSentencePatterns)核心要点：掌握"主语+be动词+表语(名词/形容词/地点副词等)"句型；掌握"主语+实义动词+(宾语)"句型（本学期以be动词为主，实义动词初步接触，如like,have等）。一、连词成句(Makesentenceswiththegivenwords)1.am,I,happy(.)_____________________________________2.is,this,a,pencil(.)_____________________________________3.are,they,in,the,park(.)_____________________________________4.my,is,mother,a,teacher(.)_____________________________________5.books,are,these,my(.)_____________________________________(此处假设有图片提示，例如：图1：一个男孩在跑步；图2：一只猫在椅子上；图3：一些苹果是红色的)1.Theboy____________.(running/isrunning)(提示：根据图片选择正确的动词形式，此处假设强调正在进行的动作，用be+doing，但需注意三年级下学期是否已接触现在进行时，若未，则用一般现在时：runs)*（根据实际教学进度调整，若未学现在进行时，则改为：Theboy______(run/runs).）*3.Theapples____________.(red/arered)---第五部分：否定句与一般疑问句(NegativeSentencesandGeneralQuestions)核心要点：be动词的否定形式在其后加not(isnot=isn't,arenot=aren't)；be动词引导的一般疑问句，将be动词提前，句末用问号，肯定回答用"Yes,主语+be."，否定回答用"No,主语+benot."。一、将下列肯定句改为否定句(Changethefollowingpositivesentencesintonegativesentences)1.Iamateacher._____________________________________2.Heistenyearsold._____________________________________3.Theyareinthelibrary._____________________________________4.Thisisaredapple._____________________________________二、将下列陈述句改为一般疑问句并作肯定和否定回答(Changethefollowingstatementsintogeneralquestionsandgiveshortanswers)1.Sheisastudent.Q:_____________________________________A:Yes,____________./No,__________________.2.Theyarehappy.Q:_____________________________________A:Yes,____________./No,__________________.3.Thisisyourbag.Q:_____________________________________A:Yes,____________./No,__________________.---参考答案与解析（部分典型题）第一部分：be动词的运用一、1.A2.B3.C4.B5.C二、1.is,is2.are3.is4.Is,is5.am,is*（解析：第4题，"yourmother"是第三人称单数，故用Is提问，回答也用is。）*第二部分：名词的单复数一、1.books2.pens3.cats4.buses5.boxes6.babies7.apples8.friends二、1.books2.cat3.desks4.dolls5.birds第三部分：代词一、1.He2.They3.I4.It5.We二、1.my2.your3.His4.Her5.Our第四部分：基本句型一、1.Iamhappy.2.Thisisapencil.3.Theyareinthepark.4.Mymotherisateacher.5.Thesearemybooks.二、（根据图片提示，此处以括号内提示为例）1.isrunning/runs(根据教学进度选择)2.ison3.arered第五部分：否定句与一般疑问句一、1.Iamnotateacher.2.Heisnot(isn't)tenyearsold.3.Theyarenot(aren't)inthelibrary.4.Thisisnot(isn't)aredapple.二、1.Q:Issheastudent?A:Yes,sheis./No,sheisnot(isn't).2.Q:Aretheyhappy?A:Yes,theyare./No,theyarenot(aren't).3.Q:Isthisyo