1 小学英语四种时态知识点加练习一、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+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? 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: runsgetslikescolletstakesplaysclimbs ⋯⋯.(2)结尾是s, x, sh, ch, o,前为辅音字母, 结尾加es :watchesteachesgoesdoeswashescrossesmixesbrushes (3)动词末尾 y 前为辅音 :将 y 改为 i 加 es: study→ studies fly→ fliescarry → carriescry → cries但在 y 前如果为元音则直接加s:buyssays 四.时间标志:always , usually , often , sometimes ,every⋯一般现在时练习题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________________(...