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1、简单时态讲解及练习一、一般现在时一般现在时基本用法介绍一般现在时的功能: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。注意:(我用am,你用are,三单is,复数are。)2.行为动词:主语+行为
2、动词(+其它)。如:WestudyEnglish.我们学习英语。注意:(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。肯定句:主语+be+其它。如:Heisaworker.他是工人。否定句:主语+be+not+其它。Heisnotaworker.他不是工人。一般疑问句:Be+主语+其它。(be动词移到句首)如:Iamastudent.-Areyouastudent? -Yes
3、.Iam./No,I'mnot.特殊疑问句:疑问词+一般疑问句。如:Mybikeisunderthetree.Isyourbikeunderthetree?Whereisyourbike?2.行为动词的变化。肯定句:主语+动词原形(+其它)。否定句:主语+don't(doesn't)+动词原形(+其它)。如:Ilikebread. Idon'tlikebread.当主语为第三人称单数时,要用doesn't构成否定句。如:Heoftenplaysfootball. Hedoesn'toftenplayf
4、ootball.一般疑问句:Do(Does)+主语+动词原形+其它。(句首加助动词do,does)如:Ioftenplayfootball. -Doyouoftenplayfootball?-Yes,Ido./No,Idon't.15当主语为第三人称单数时,要用does构成一般疑问句。如:Shegoestoschoolbybike.-Doesshegotoschoolbybike?-Yes,shedoes./No,shedoesn't.特殊疑问句:疑问词+一般疑问句。如:Shegoestoschoolb
5、ybike.Doesshegotoschoolbybike?Howdoesshegotoschool?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_______
6、stay________make________look_________have_______pass_______carry____come________watch______plant_______fly________study_______brush________do_________teach_______二、用am,is,are填空1.I______aboy.______youaboy?No,I_____not.2.Thegirl______Jack'ssister.3.Thedog__
7、_____tallandfat.4.Themanwithbigeyes_______ateacher.5.______yourbrotherintheclassroom?6.Where_____yourmother?She______athome.7.How_______yourfather?8.MikeandLiuTao______atschool.9.Whosedress______this?10.Whosesocks______they?11.That______myredskirt.12.Who_
8、_____I?13.Thejeans______onthedesk.14.Here______ascarfforyou.15.Here______somesweatersforyou.16.Theblackgloves______forSuYang.17.Thispairofgloves______forYangLing.18.Thetwocupsofmilk_____forme.1519.Sometea______inthe