一般现在时现在进行时一般将来时一般过去时四大时态讲解表格对比总结.doc

四大时态总结--------一般现在时、一般将来时、一般过去时、现在进行时
一般现在时
一般现在时表示经常性或****惯性的动作，常与表示频度的时间状语连用，如often, usually, always, sometimes, never, seldom, every week/day/year/month..., once a week, on Sundays等。动词用原形。当主语为第三人称单数时（he, she, it, 一个人名） ，动词变为三单形式。
肯定句
否定句
一般疑问句
特殊疑问句
Be动词
主语+am/is/are+其它
I am a boy.
主语+am/is/are not+其它
I am not a boy.
Am/is/are+主语+其它
Are you a boy?
Yes, I am.
No, I am not.
疑问词（where/what/
when/who/why/how）+am/is/are+主语+其它
Where are you?
行为动词
第一人称I、第二人称you、
复数
主语+动词原形(+其它)。We play basketball after school everyday.
主语+ don't+动词原形(+其它)。we don’t play basketball after school everyday.
Do +主语+动词原形+其它?
Do you play basketball after school everyday?? ?
Yes, we do. / No, we don't.
疑问词+ do +主语+动词原形+其它?
What do you do after school everyday?
第三人称单数
主语+动词三单式(+其它)。
He swims well.
主语+ doesn’t+动词原形(+其它)。
He doesn’t swim well.
Does +主语+动词原形+其它。
Does he swim well ?
Yes, he does. / No, he doesn't.
疑问词+ does +主语+动词原形+其它。
How does your father go to work?
第三人称单数的动词变化规则：
（只有在第三人称(he, she, it, 一个人名)为主语的肯定句中，动词才用三单式）
(1)一般情况下，直接加s runs　　gets　　likes　　
(2)结尾是s, x, sh, ch, o,前为辅音字母，结尾加es watches, goes, washes, crosses, mixes, does　
(3)动词末尾y，前为辅音，将y改为i加es study→studies fly→flies
但在y前如果为元音则直接加s 　buys　says plays
(4)不规则变形 have—has
二、现在进行时
现在进行时表示此时此刻或现阶段正在进行的动作。常与now, at this time, these days, Listen! Look! at this moment/time等词连用。