简单时态讲解及练习.doc
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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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