四种时态及其练习(完整版).docx

四种时态
(一般现在时、一般过去时、一般将来时、现在进行时 )
一般现在时。主要描述经常会发生的动作、状态或不变的真理。
标志词： ① always, usually, often, sometimes, hardly, ever, n ever;
every second / hour /day / year / Friday/ June;
once a week, twice two weeks;
结构
组成：主语+be+名词(形容词)
I am a stude nt. He is tall.
否定句：在be后加not
I am not a stude nt. He is not tall.
疑问句：be动词提前到第一位。
Are you a stude nt? Is he tall?
Yes, I am. / No, I am , he is. / No, he isn ' t.
主语+动词+地点+时间
We go to school on Mon day.
He goes to the park on Sun day.
否定句：主语+don' t/doesn' t+动词原形+地点+时间
We don' t go to school on Mon day.
He does n ' t go to the park on Sun day.
疑问句：在句首加do或does
Do you go to school on Mon day? Yes, we do./ No, we don ' t.
Does he go to the park on Sun day?
t.
Yes, he does./ No, he does n
动词三单变化：
在原单词末尾加s ,如：like - likes
单词以 o, sh, ch, s, x结尾力口 es,女口： go - goes
单词末尾为辅音+y结尾去y加ies女口： study- studies
现在进行时：主要叙述正在发生的事情。
标志词： ①now, right now,
at present at the moment, at this time,
these days
Look!， Listen! ⑤....o ' clock
结构
组成：主语+be + 动词ing形式
I am readi ng En glish.
They are swimmi ng.
He is playing football.
否定句：在be后加not
I am not readi ng En glish.
They are n ot swimmi ng.
He is not play ing football.
疑问句：将be放到第一位。
Are you reading English? Yes, I am./ No, I am not.
Are they swimming? Yes, they are. / No, they aren ' t.
Is he playing football? Yes, he is. / No, he isn ' t.
动词变ing形式：
①:pl