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简单时态讲解及练习.doc

发布:2019-07-18约2.1万字共13页下载文档
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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:The sky is blue.天空是蓝色的。 2.表示经常性或习惯性的动作。如:I get up at six every day.我每天六点起床。 3.表示客观现实。如:The earth goes around the sun.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:I am a boy.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+行为动词(+其它)。如:We study English.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:Mary likes Chinese.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:He is a worker. 他是工人。 否定句:主语+ be + not +其它。 He is not a worker.他不是工人。 一般疑问句:Be +主语+其它。(be动词移到句首) 如:I am a student. -Are you a student?      -Yes. I am. / No, Im not. 特殊疑问句:疑问词+一般疑问句。 如:My bike is under the tree. Is your bike under the tree? Where is your bike? 2.行为动词的变化。 肯定句:主语+动词原形(+其它)。 否定句:主语+ dont( doesnt ) +动词原形(+其它)。 如:I like bread.    I dont like bread. 当主语为第三人称单数时,要用doesnt构成否定句。 如:He often plays football.    He doesnt often play football. 一般疑问句:Do( Does ) +主语+动词原形+其它。(句首加助动词do, does) 如:I often play football.    - Do you often play football? - Yes, I do. / No, I dont. 当主语为第三人称单数时,要用does构成一般疑问句。 如:She goes to school by bike. - Does she go to school by bike? - Yes, she does. / No, she doesnt. 特殊疑问句:疑问词+一般疑问句。 如:She goes to school by bike. Does she go to school by bike? How does she go to school? 动词+s的变化规则 1.一般情况下,直接加-s,如:cook-cooks, milk-milks 2.以s. x. sh. ch. o结尾,加-es,如:guess-guesses, wash-washes, watch-watches, go-goes 3.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am, is, are 填空 1. I ______ a boy. ______ you a boy? No, I _____ not. 2. The girl______ Jacks sister. 3. The dog _______ tall and fat. 4. The man with big eyes _______ a teacher. 5. ______ your brother in the classroom? 6. Where _____ your mother? She ______ at home. 7. How _______ your father? 8. Mi
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