一般现在时

一般现在时一.定义：1.一般现在时表示现在的状态1）I’mtwelve.(我十二岁）2)Ihavethreebaseballs.（我有三个棒球）2）I’mintheclassroom（我在教室里）3）Jackisfromchina.（杰克来自中国）4）Whereismybag?（我的包在哪儿）5）Iamastudent.(我是一名学生）2.一般现在时表示主语具备的性格和能力。1）ShelikesEnglish.(她喜欢英语）2）Ilikeplayingbasketballball,butdon’tlikeplayingbaseball.(我喜欢打篮球，但是我不喜欢打棒球）3）Idon’tlikemakefriends.(我不喜欢交朋友）4）Hecanspeakchinese.(他能够说英语）5）Shecanplaytheguitar.(她能够弹吉他）6）Shecansingwell.(她可以唱歌）3.一般现在时表示经常性和习惯性的动作。（通常和时间标志词连用：often经常，usually通常，always总是，sometimes有时，never从不，everyday每天，onweekends在周末等）sometimes有时1）sheusuallygetsupatsixo’clock.(她通常在六点钟起床）2）Lucynevertakesashower.(露西从不洗澡）3）Wesometimesplaybasketballafterschool.(我们有时在放学后打篮球）4）Ialwaysdomyhomeworkonweekends(我总是在周末做作业）二．一般现在时谓语动词的变化。一般现在时动词可分为两大类（1）含be(is/am/are)动词和情态动词can一类。该句子中如含be动词，be动词根据主语确定单复数。如含情态动词can,can后面的动词一律用原型。Eg.1.Iamagirl.(我是女孩）2.Theyarestudents.（他们是学生）3.shecanplaychess.(她能够下象棋）4.Theycansing.(他们能唱歌）(2)含实义动词的谓语动词。当主语为非第三人称单数，谓语动词用原型。当主语为第三人称单数，谓语动词用第三人称单数形式。Eg1.Weoftengetupearlyinthemorning.Eg2.Myfatheroftengetsupearlyinthemorning.（3）谈谈“主语为三单，其后动词s添”在含实义动词的一般现在时中，当主语为第三人称单数时，谓语动词要用第三人称单数形式。可以简单叙述为“主语为三单，其后动词s添”。何谓第三人称单数？用一句话概括就是“非你、非我、非复数”，如he,she,it,myfather,mymother,mysister,ourEnglishteacher,Tom,Mike,LiuJia,China,mybook,etc.Eg3.Hesometimesgoestoschoolbybike.Eg4.Myfatherworksinthehospitalasadoctor.（4）动词第三人称单数变化规则动词第三人称变化的规则与可数名词复数变化的规则相同。规则一、一般在词尾加-s。如：looks,puts.reads,sees,skis等。规则二、以-o,-s,-x,-sh,-ch结尾的加-es。如：goes,does,misses,passes,mixes,fixes,pushes,wishes,watches,teaches,等。规则三、以辅音字母加y结尾的，变y为i，再加-es。注意一定是辅音字母加y才变，若是元音字母加y，则直接加-s。如：fly→flies,try→tries,fry→fries,copy→copiesbuy→buys,enjoy→enjoys,play→plays,say→says,pay→pays四．一般现在时的句子转换当句子中有be动词或情态动词时，则把be动词或情态动词(can,could等等)提到主语的前面变成一般疑问句;在be动词或情态动词后面加not变成否定句.例：①陈述句：Sheisastudent.一般疑问句→Issheastudent?否定句→Sheisnotastudent.②陈述句：Icanswim.一般疑问句→Canyouswim?否定句→Icannotswim.当句子中即没有be动词，也没有情态动词时，则在主语前加助动词do(you,以及复数),does（单数she,he,it）变成一般疑问句；在主语后谓语动词前加助动词don’t（I,you,以及复数),doesn’t（单数she,he,it）变成否定句，助动词后的动词要变成动词原形。例：①陈述句：Wegetupat7:00everymorning.一般疑问句→Doyougetupat7:00everymorning?否定句→Wedon’tgetupat7:00everymorning.②陈述句：Shehasalittlebrother.一般疑问句→Doesshehavealittlebrother?否定句→Shedoesn’thavealittlebrother.六、练习巩固1.写出下列动词的三单形式go__________catch_________brush（刷）_____wash___________do________like________have___________watch________drink___________fly___________say_______learn___________eat___________read___________sing___________buy__________study_______stay__________make__________look____pass__________carry____come__________plant(种植)______teach_______buy__________2.用括号内动词的适当形式填空。1.Weoften___________(play)intheplayground.2.He_________(get)upatsixo’clock.3.__________you_________(brush)yourteetheverymorning.4.What________(do)heusually______(do)afterschool?5.Danny_______(study)English,Chinese,Maths,ScienceandArtatschool.6.Mikesometimes__________(go)totheparkwithhissister.7.Ateightatnight,sheoften__________(watch)TVwithhisparents.8.________Mike________(read)Englisheveryday?9.Howmanylessons_________yourclassmate________(have)onMonday?10.Whattime_________hismother_________(do)thehousework?3.选择题()1.I________toschoolat7:00inthemorning.A.goB.goingC.goes()2.They_______bookseverydayinthelibrary.A.readsB.readC.reading()3.Themonkey________eatingbananasverymuch.A.likeB.likesC.liking()4.Myfather________toreadnewspaperaftersuppereveryday.A.likeB.likesC.liking()5.IlikewatchingTV,butmymother_________likeit.A.don’tB.doesn’tC.does()6.____________yourfatherdrinkmilkeveryday?A.doB.areC.does（）7.Wewillgoshoppingifit____tomorrow.don'trainB.didn'trainC.doesn'trainD.isn'train（）8.Hesaidthesun____intheeastand____inthewest.Arose;setBrises;setsCrises,setDrise;sets（）9.WangMei____musicandoften____tomusic.Alike;listenBlikes;listensClike;arelisteningDliking;listen（）10.Jenny____Englisheveryevening.AhasstudyBstudiesCstudyDstudied4.改错(划出错误的地方，将正确的写在横线上)1.IsyourbrotherspeakEnglish?__________________2.Doeshelikesgoingfishing?__________________3.Helikesplaygamesafterclass.__________________4.Mr.WuteachsusEnglish.__________________5.Shedon'tdoherhomeworkonSundays._________________5.把下列句子变成一般疑问句（并作肯定和否定回答）、否定句例：Ilikecooking.→Doyoulikecooking?Yes,Ido.No,Idon't.Idon'tlikecooking.1.Myfriendslikeplayingsoccer.2.TheyspeakEnglisheveryday.3.DanielwatchesTVeveryevening4.JohnisfromCanada.5.Tomdoeshishomeworkathome.6.Mydogrunsfast.7.Amylikesplayingcomputergames.8.Shecanplaythepianowell.