初中英语语法 一般时态(ppt课件)

They are not (aren’t) in the classroom.
一般疑问句: 肯定回答: 否定回答:
Are they in the classroom? Yes, they are. No, they aren’t.
学习交流课件
14
动词be一般现在时的构成
肯定式
否定式
疑问式 肯定否定回答
I am a teacher. I am not a teacher.
Am I a teacher?
Yes, I am. No, I am not.
He/she is a He/she is not a Is he/she a Yes, he/she is.
teacher. teacher.
teacher? No, he/she isn’t
It is a cat. It is not a cat. Is it a cat? Yes, it is.
No, it isn’t.
We/You/They are teachers.
We/You/They are not teachers.
Are we/you/they teachers?
一般疑问句：
Am/Is/Are+主语＋其它成分? Is it a tall tree?
Do +主语(除第三人称单数) ＋动词原形＋其它成分? Do the Greens often go swimming in summer?
Does+主语（第三人称单数）＋动词原形＋其它成分?
Does the earth go around the学习su交n流课?件
你(you)用are, Is 连着他(he)她(she)它(it), 遇到复数都用are.
主语(除第三人称单数)＋动词原形＋其它成分. I get up at six every day .
主语(第三人称单数)＋动词s/es ＋其它成分. My father usually goes to work by bus.
一
一般现在时
学习交流课件
1
一般现在时：
表示现在的状态、经常的或习惯性的动作、客观真理或事实等。与一般
现在时连用的时间状语：often, always, sometimes, usually, every day/ week/year 等． 我(I)用am,
一般现在时的构成： 肯定句： 主语＋is/am/are＋其它成分. He is an office worker.
go goes
do does
5.特殊情况： have
has
学习交流课件
6
Ex1. 写出下列词的单三形式：
look; go; give; fly;
have
looks; goes; gives; flies;
has
EX2 1.Tom often_g_et_s( get ) up at six in the morning
Is it very hot? Yes, it is very hot.
学习交流课件
11
He is happy.
否定句: 一般疑问句: 肯定回答: 否定回答:
He is not (isn’t) happy. Is he happy? Yes, he is. No, he isn’t.
学习交流课件
12
学习交流课件
4
行为动词do一般现在时第三人称单 （he,she,it) 的构成规则：
1、一般动词，在词尾加 s ; 如： work--works, live--lives, play--plays, sing-- sings.
eg: She lives in Ningbo. 她住在宁波。
2、以/s/ /z/ 等音素结尾的动词，词尾加 -es ，如词尾为e， 只 加-s. 读作 /iz /如：
goes
2. The earth __( go) around the sun .
lives
3.Mary’s parent __(live ) in Beijing .
draws
4. She ___ (draw) v学e习r交y流w课件ell.
7
Where are they?
They are in the classroom.
I am happy.
否定句: 一般疑问句: 肯定回答: 否定回答:
I am not happy. Are you happy? Yes, I am. No, I am not.
疑问句要求把BE 提前，第一人称变成第二人称。
学习交流课件
13
They are in the classroom.
否定句:
teach------ teaches,
wash----- washes.
eg: My mother washes the coat.我母亲洗了大衣。
学习交流课件
5
3.以辅音字母加Y 结尾的词，改Y为I 再加ES，读作[Z]
Study studies
fly
flied
4.以辅音字母+O结尾的词，一般情况是在词尾加ES 读 作[Z]
3
特殊疑问句（一般时态）：
疑问词＋is/am/are +主语＋(其它成分)？
What time is it now?
疑问词＋do +主语＋动词原形＋(其它成分)？
When do you usually go to bed?
疑问词＋does+主语（第三人称单数）+动词原形＋ （其它成分）？
Where does Jim do his homework on weekdays ?
学习交流课件
2
否定句：
主语＋am/is/are not＋其它成分. They are not in the library.
主语(除第三人称单数) ＋don’t＋动词原形＋其它成分. I don’t like swimming.
主语(第三人称单数)＋doesn’t＋动词原形＋其它成分. The old man doesn’t like playing cards .
学习交流课件
8
Is he happy? Yes, he is happy.
Is he strong? Yes, he is strong.
学习交流课件
9
What is it? It is a cat.
Is she busy? Yes, she is busy.
学习交流课件
10百度文库
Am I sad? No, I am happy.