小学英语一般现在时讲解及练习 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+一般疑问句。如:Where is my bike? 2. 行为动词的变化。 l、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 ? 2、当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)结尾是 s, x, sh, ch, o,前为辅音字母, 结尾加 es : watches teaches goes does washes crosses mixes brushes (3)动词末尾 y 前为辅音:将 y 改为 i 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… 一般现在时练习题(1) I.用下列单词的适当形式填空 1.We often___________(play) in the playground. 2.He _________(get) up at six o’clock. 3.__________you _________(brush) your teeth every morning? 4.What________________(do...