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
一般疑问句: Be +主语 +其它
如: -Are you a student
/ No, I'm not
特殊疑问句:疑问词+一般疑问句
如:Where is my bike
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, h