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小学英语语法及习题---四大基本时态一、一般现在时一般现在时基本用法介绍【No.1】一般现在时的功能1.表示事物或人物的特征、状态。如：Theskyisblue.天空是蓝色的。2.表示经常性或习惯性的动作。如：Igetupatsixeveryday.我每天六点起床。3.表示客观现实。如：Theearthgoesaroundthesun.地球绕着太阳转。一般现在时的构成1.be动词：主语+be(am,is,are)+其它。如：Iamaboy.我是一个男孩。2.行为动词：主语+行为动词(+其它)。如：WestudyEnglish.我们学习英语。当主语为第三人称单数(he,she,it)时，要在动词后加-s或-es。如：MarylikesChinese.玛丽喜欢汉语。一般现在时的变化1.be动词的变化。否定句：主语+be+not+其它。如：Heisnotaworker.他不是工人。一般疑问句：Be+主语+其它。如：-Areyouastudent?-Yes.Iam./No,I'mnot.特殊疑问句：疑问词+一般疑问句。如：Whereismybike?2.行为动词的变化。否定句：主语+don't(doesn't)+动词原形(+其它)。如：Idon'tlikebread.当主语为第三人称单数时，要用doesn't构成否定句。如：Hedoesn'toftenplay.一般疑问句：Do(Does)+主语+动词原形+其它。如：-Doyouoftenplayfootball?-Yes,Ido./No,Idon't.当主语为第三人称单数时，要用does构成一般疑问句。如：-Doesshegotoworkbybike?-Yes,shedoes./No,shedoesn't.特殊疑问句：疑问词+一般疑问句。如：Howdoesyourfathergotowork?动词+s的变化规则1．一般情况下，直接加-s，如：cook-cooks,milk-milks2．以s.x.sh.ch.o结尾，加-es，如：guess-guesses,wash-washes,watch-watches,go-goes3．以“辅音字母+y”结尾，变y为i,再加-es，如：study-studies一般现在时用法专练:一、写出下列动词的第三人称单数drink________go_______stay________make________look_________have_______pass_______carry____come________watch______plant_______fly________study_______brush________do_________teach_______二、用括号内动词的适当形式填空。1.Heoften________(have)dinnerathome.2.DanielandTommy_______(be)inClassOne.3.We_______(notwatch)TVonMonday.4.Nick_______(notgo)tothezooonSunday.5.______they________(like)theWorldCup?6.What_______theyoften_______(do)onSaturdays?7._______yourparents_______(read)newspaperseveryday?8.Thegirl_______(teach)usEnglishonSundays.9.SheandI________(take)awalktogethereveryevening.10.There________(be)somewaterinthebottle.11.Mike_______(like)cooking.12.They_______(have)thesamehobby.13.Myaunt_______(look)afterherbabycarefully.14.Youalways_______(do)yourhomeworkwell.15.I_______(be)ill.I’mstayinginbed.16.She_______(go)toschoolfromMondaytoFriday.17.LiuTao_______(do)notlikePE.18.Thechildoften_______(watch)TVintheevening.19.SuHaiandSuYang_______(have)eightlessonsthisterm.20.－Whatday_______(be)ittoday?－It’sSaturday.三、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.HespeaksEnglishverywell.(改为否定句)___________________________________________________7.Iliketakingphotosinthepark.(对划线部分提问)________________________________________________________8.JohncomesfromCanada.(对划线部分提问)___________________________________________________9.Sheisalwaysagoodstudent.(改为一般疑问句，作否定回答)________________________________________________________10.SimonandDaniellikegoingskating.(改为否定句)___________________________________________________四、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._________________二、现在进行时1．现在进行时表示现在正在进行或发生的动作，也可表示当前一段时间内的活动或现阶段正在进行的动作。2．现在进行时的肯定句基本结构为:主语+be+动词ing.3．现在进行时的否定句在be后加not。4．现在进行时的一般疑问句把be动词调到句首。5．现在进行时的特殊疑问的基本结构为：疑问词+be+主语+动词ing?但疑问词当主语时其结构为：疑问词+be+动词ing?动词加ing的变化规则1．一般情况下，直接加ing，如：cook-cooking2．以不发音的e结尾，去e加ing，如：make-making,taste-tasting3．如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing，如：run-running,stop-stopping现在进行时专项练习：一、写出下列动词的现在分词：play________run__________swim_________make__________go_________like________write_________ski___________read________have_________sing________dance_________put_________see________buy_________love____________live_______take_________come________get_________stop_________sit________begin________shop___________二、用所给的动词的正确形式填空：1.Theboy__________________(draw)apicturenow.2.Listen.Somegirls_______________(sing)intheclassroom.3.Mymother_________________(cook)somenicefoodnow.4.What_____you______(do)now?5.Look.They_______________(have)anEnglishlesson.6.They____________(not,water)theflowersnow.7.Look!thegirls________________(dance)intheclassroom.8.Whatisourgranddaughterdoing?She_________(listen)tomusic.9.It’s5o’clocknow.We_____________(have)suppernow10.______Helen____________(wash)clothes?Yes,sheis.三、句型转换：1.Theyaredoinghousework.(分别改成一般疑问句和否定句)__________________________________________________________________________________________________________________________2．Thestudentsarecleaningtheclassroom.(改一般疑问句并作肯定和否定回答)__________________________________________________________________________________________________________________________________3．I’mplayingthefootballintheplayground.(对划线部分进行提问)_________________________________________________________________4．Tomisreadingbooksinhisstudy.(对划线部分进行提问)_________________________________________________________________三、将来时一、概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事。句中一般有以下时间状语：tomorrow,nextday(week,month,year…),soon,thedayaftertomorrow（后天）等。二、基本结构：①begoingto+do；②will+do.三、否定句：在be动词（am,is,are）