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7A知识点归纳一般现在时一、定义与讲解一般现在时表示经常或习惯性的动作或一般性事实。,也可表示现在的状态或主语具备的性格和能力。通常与副词everyday(每天),always(总是),usually(通常),often(经常)sometimes(有时),等时间状语连用。例:(1)表示事物或人物的特征、状态。Theskyisblue.天空是蓝色的。Mary’sfatherisanEnglishteacher.玛丽的爸爸是一名英语老师。(2)表示经常性或习惯性的动作。Igetupatsixeveryday.我每天六点起床。Sheplayssportseveryday.她每天都做运动。(3)表示客观现实。Thetablehasfourlegs.桌子有四条腿。Thereare50studentsinmyclass.我们班有50个学生。(4)表示客观真理,科学原理,自然现象,等客观事实或格言谚语等。Thesunrisesintheeasteveryday.太阳每天从东方升起。Theearthgoesaroundthesun.地球绕着太阳转。(5)表示平日的喜好。Ilikebananas.Wedon’tlikevegetables.Helikesicecream.Shedoesn’tlikestrawberries.二、只有主语在第三人称单数时用动词的“三单形式”,其他人称用动词原形。动词三单形式的变化规则:1.(1)多数直接在动词词尾加-s.play—playslike—likesask—askswork—worksget—getscall—calls(2)以字母s,x,ch,sh或o结尾的动词,在词尾直接加-es.Watch—watcheswish—wishesdo—doesgo—goes(3)以“辅音字母加-y”结尾的动词,要先变y为i再加-es.try—triesstudy—studiescry—criesfly—flies2.不规则变化:be—ishave—has三、一般现在时的句子转换:(1)变一般疑问句:当句子中有be动词或情态动词时,则把be动词或情态动词(can,could等)提到主语的前面,(口诀:一调二变三问号);(2)变否定句:在be动词或情态动词后面直接加not变成否定句.(be后not莫忘记)例:①陈述句:Sheismysister..疑问句→Issheyoursister?Yes,Iam./No,I’mnot.否定句→Sheisnotmysister.②陈述句:Icanplaysoccer.疑问句→Canyouplaysoccer?Yes,Ican./No,Ican’t.否定句→Icannot/can’tplaysoccer.注意:对一般疑问句的回答:一般用什么问就用什么来回答。但以下例外:Isthisapencil?Yes,itis./No,itisn’t.Isthatyourbackpack?Yes,itis./No,itisn’t.Aretheseyourparents?Yes,they’re./No,theyaren’t.ArethoseJim’sbrothers?Yes,they’re./No,theyaren’t.(3)当句子中没有be动词,也没有情态动词时,变一般疑问句时,在主语前加助动词do(I,we,you,以及复数),does(第三人称单数she,he,it等)变成问句;(4)变否定句时,在主语后谓语动词前加助动词don’t,doesn’t变成否定句,切记:助动词后的动词则还原成动词原形。例:①陈述句:Wegetup(起床)at7:00everymorning.疑问句→Doyougetupat7:00everymorning?否定句→Wedon’tgetupat7:00everymorning.②陈述句:Shehasabrother.疑问句→Doesshehaveabrother?否定句→Shedoesn’thaveabrother.※在一般现在时中,当主语是第三人称单数时,谓语动词要用第三人称单数形式,即常在动词原形后加-s或-es。但有些同学们对于哪些主语是第三人称单数还不十分清楚,现归纳总结如下:1.人称代词he,she,it是第三人称单数。如:①HelikeswatchingTV.他喜欢看电视。②Shehaslunchattwelve.她十二点吃午餐。2.单个人名、地名或称呼作主语;是第三人称单数。如:①HanMeilikesmilk.韩梅喜欢牛奶。②BeijingisinChina.北京在中国。③UncleWangoftenplaysvolleyball.王叔叔经常打排球。3.单数可数名词或this/that/the+单数可数名词作主语时,是第三人称单数。如:①Thisbookisyours.这本书是你的。②Thatcarisred.这辆车是红色的。③ThecatisLucy's.这只猫是露茜的。4.不定代词someone,somebody,nobody,everything,something等及指示代词this,that作主语时,是第三人称单数。①Everyoneishere.大家都到齐了。②Thereisawatchonthetable.桌上有块手表。③Thisisapen.这是一支钢笔。④Thatisaneraser.这是一块橡皮。5.不可数名词作主语时为第三人称单数。如:①Themilkisintheglass.牛奶在玻璃杯里。②Thebreadisverysmall.那面包很小。6.当数字或字母作主语时,看作第三人称单数。如:①6isaluckynumber.6是个吉利数字。②Iisaletter.I是个字母。巩固练习题:一、写出下列动词的第三人称单数形式Havelikedrink_____go_____stay____make______look______have____come_____watch______fly_____do_____study____teach_____二、用be动词填空1.I______aChineseboy.Myname_______LiLei.2.Ann_________anEnglishgirl.SheandI__________goodfriends.3.––_______thatbikeyours?––No,it___________.4.––What________theboy’sname?––Hisname__________David.5.––Howold_________you?––I_____________thirteen.6.LucyandLily___________sisters.They___________fromAmerica.7.Daniel_________elevenyearsold.They_______fromChina.8.Myteacher___________young.She___________helpful.9.––________yougoodatfootball?––Yes,I_____________.10.Thetwins____________inthesameclass.三、用所给动词的适当形式填空1.Hisclassmates_______(notknow)whathereallylikes.2.He________(like)watchingTV.3.She________(have)lunchattwelve.4.MrandMrsWhite_______(notmake)pizzaathome.5.Sheoften_______(say)badwordsaboutothers.6.He_________(play)computergameseveryday.7.Mygrandfather_________(notlisten)totheradioaftersupper.8.Millie_________(notdraw)picturesattheweekend.9.Lindaoften________(go)shoppingattheweekend.10.She________(notdo)herhomeworkonFridayevening.11.MrGreen________(notlive)inShanghaiwithhisparents.12.Thelittlebabyalways________(cry)ifheishungry.13.She_________________(notcome)fromAmerica.14.Thegirl_________(look)outofthewindowandseesmanybirdsinthesky.15.Jennyrunshomeand___________(sit)onthechair.16.PeterandMary___________(notdrink)milkeveryday.17.He_________(brush)teetheverymorning.18.Thelady________(watch)TVeveryevening.19.Theoldman________(fix)alotofradioseveryyear.20.Thewoman_______(stay)withhersonintheUSAfortwomonthseveryyear.四、按照要求改写句子1.DanielwatchesTVeveryevening.(改为否定句)___________________________________________________2.Idomyhomeworkeveryday.(改为一般疑问句,作否定回答)___________________________________________________3.Shelikesmilk.(改为一般疑问句,作肯定回答)___________________________4.Amylikesplayingcomputergames.(改为一般疑问句,作否定回答)___________________________________________________5.Wegotoschooleverymorning.(改为否定句)__________________________________________________6.JohncomesfromCanada.(对划线部分提问)___________________________________________________7.Sheisagoodstudent.(改为一般疑问句,作否定回答)___________________________________________________8.SimonandDaniellikeplaysports.(改为否定句)___________________________________________________9.Thisismypencil?(变一般疑问句)yourpencil?10.TheseredsocksareKate’s.(变一般疑问句)socksKate’s?11.Marydoesnothaveanybooks.(变肯定句)Marybooks.12.Shelikestheblackbagverymuch.(变为否定句)13.Ilikeapples.(用she改写句子)14.It’sanEnglishdictionary.(对画线部分提问).15.Hehashamburgerandapplesfordinner.(变一般疑问句)五、改错(划出错误的地方,将正确的写在横线上)1.IsyourbrotherspeakEnglish?_____2.Doeshelikesgoingfishing?____
本文标题:新牛津7A_语法讲解及练习
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