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时态复习(一般现在时)

发布时间:2013-12-19 16:40:12  

时态复习

一般现在时

一. 意义:表示经常发生的事情,动作或存在的状态

二. 构成及变化

1、be动词的变化

肯定句:主语+be(am, is, are)+其它。如:I am a boy. 我是一个男孩。 否定句:主语+ be + not +其它。如:He is not a worker. 他不是工人。 一般疑问句:Be +主语+其它。 如:-Are you a student?

-Yes. I am. / No, I'm not.

特殊疑问句:疑问词+ be+原肯定句中的主语 。如:Where is my bike?

2、行为动词的变化

当主语为第一,二人称及复数时,助动词为do

肯定句:主语+动词原形(+其它)。

如: We often play basketball after school.

否定句:主语+ don't+动词原形(+其它)。

如:we don’t play basketball after school.

一般疑问句:Do +主语+动词原形+其它?

如:Do you often play basketball after school l? Yes, we do. / No, we don't.

特殊疑问句:疑问词+以do开头的一般疑问句?

如: What do you often do after school ?

主语为第三人称单数时 ,助动词为does

肯定句:主语+动词三单式(+其它)。如: He swims well.

否定句:主语+ doesn’t+动词原形(+其它)。如:He doesn’t swim well.. 一般疑问句:Does +主语+动词原形+其它。如:Does he swim well ? Yes, he does. / No, he doesn't.

特殊疑问句:疑问词+以does开头的一般疑问句?

如: How does your father go to work?

三、第三人称单数的动词变化规则(只有在第三人称为主语的肯定句中,动词才用三单式)

(1) 多数动词直接加s:

runs gets likes collets takes plays climbs…….

(2) 以s,x,sh,ch,o结尾的,加es :

watches teaches goes does washes crosses mixes brushes…….

(3) 辅音字母加y结尾的,y变i,再加es:

study→studies fly→flies carry→carries cry→cries

但在y前如果为元音则直接加s: buys says

四、时间标志:always , usually , often , sometimes ,every…

例题:

1. My mother ______(work) in a primary school and I _______ (study) in the same school.

2. I _______ (have) a bike and Ben ______ (have) a bike, too.

3. My sister _______ (be) a pupil. She _______ (study) very hard.

4. Who ______ (cook) breakfast for your family?

5. My father is a teacher. He _______ (teach) Chinese in a primary school.

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