文档介绍：一般现在时
动词:(is ,am, are )
(can, must, may, need, shall)
(run, speak, call, say….)
Ⅰ、概念:
经常、反复发生的动作或存在的状态及现在的某种状态。
1、肯定式
1)主语+ be (am/is/are)+表语
I am a student.
It/ She/He is a teacher.
You/They are classmates.
2)主语+情态动词(can, must, may, need, shall)
I can speak English.
She must go to school.
Ⅱ、构成形式:
3).主语+行为动词(speak,say,call,go, run….)
1)I speak English.
2)She/He/It speaks English.
3)They call me Tom.
4)He runs very fast.
注意:在一般现在时态的肯定句中,当主语是第三人称单数(she, he, it),行为动词要加-s或者-es
完全免费,无需注册,天天更新!

(1).Be动词
She is a student.
变否定:She is not a student .
变一般疑问句:Is she a student ?
肯定否定回答:Yes ,she is . No ,she isn’t.
(2).情态动词
. She can speak Chinese.
变否定:She can’t speak Chinese.
变一般疑问:Can she speak Chinese?
肯定否定回答:Yes, she can. No, she can’t.
(3)行为动词
. I run very fast.
变否定句:I don’t run very fast .
变一般疑问:Do you run very fast ?
肯定否定回答:Yes, I do. No, I don’t.
. She likes Maths.
变否定句:She doesn’t like Maths.
变一般疑问:Does she like Maths?
肯定否定回答:Yes, she does. No, she doesn’t.
注意:在一般现在时态中,当谓语动词是行为动词的时候,变否定和一般疑问句时,要借助助动词do和does帮忙。当主语是第三人称单数(she, he, it)的时候用does,其他人称用do. 借助助动词do和does以后,动词要用动词原形。