初一一般现在时课件.ppt

一般现在时
定义:
一般现在时：表示通常性、规律性、习 惯性的动作或目前存在的状态。
We clean our classroom every day. He does his homework at home .
表达方法

主要通过谓语动词的变化和用时间词语来表 示，其中最主要的是谓语动词的变化。一般 现在时动词变化的规则是：
They don’t live in Shanhai.
Do they live in Shanhai? 4. I can swim well. I can’t swim well. Can you swim well?
特殊疑问句的语序
一、特殊疑问词+ 一般疑问句句序：
•Where are you from?

2.主语是任何一个单数名词或者是第三人称 单数代词he，she,it,谓语动词要进行必要 的变化。特别提一点：不可数名词也算作 单数处理。 肯定句: 主语+动词的第三人称单数+其他 否定句: 主语+doesn't+动词原形+其他 一般疑问句 : Does+主语+动词原形+其他 肯定回答: Yes，主语+does 否定回答: No，主语+doesn't 特殊疑问句: 特殊疑问词+一般疑问句
We clean our classroom every day. He does his homework at home .

1.如果主语是名词复数和代词I， we ， you ,they,谓语动词不用做任何变化，即仍 然用动词原形表示： 肯定句 主语+动词原形+其他 否定句 主语+don't+动词原形+其他 一般疑问句 Do+主语+动词原形+其他 例如：We usually go to school at 7:30. We don’t go to school at weekends. Do you usually go to school 7:30?
1、一般动词，在词尾加 s ; 如： work--works, live--lives, sing-- sings. 2、以s,x,sh,ch,o结尾的动词，词尾加 -es ,如： teach--- teaches, wash---washes, do---does, go--goes eg: My mother washes the coat.
Does the sun rise in the east?
2.Tom gets up at six in the morning. Tom doesn’t get up at six in the morning. Does Tom get up at six in the morning?
3. They live in Shanghai.
3.以辅音字母加y 结尾的词，把y变i 再加es,如: study--studies fly--flies (play--plays, stay---stays) 4. have----has
请把下列句子变成否定句和疑问句。
1. The sun rises(升起） in the east. The sun doesn’t rise in the east.
例如：
He does his homework in the evening. He doesn’t do his homework in the evening. Does he do his homework in the evening?

动词变化规律
行为动词一般现在时第三人称单数（he,she,it) 的构成规则：
I’m from the north. •What does the tiger eat?
The tiger eats meat.
Ex2.Fra Baidu bibliotek将下列句子变成其否定句，并就划线部分提问。
1. She comes from America.
Does she come from America?
She doesn’t come from Ameica.
Where does she come from? 2. I usually go to school by bike.
I don’t usually go to school by bike.
Do you usually go to school by bike? How do you usually go to school ?