初中英语八大时态课件.ppt

初中英语八大时态
Review of Tenses
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1、The Simple Present Tense
一般现在时态
教学重、难点
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一般现在时
表示经常发生的动作或存在的状态
常与every day , on Sundays, sometimes , often ,usually ,always,等连用
结构: 1、主语+动词原形+其他
Eg.
I have a meeting on Sundays .
They visit their parents once a month.
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注: 主语(三单)+ 动词(第三人称单数形式)+其他
Eg.
She likes it very much.
She usually goes to school at 7 o’clock every morning.
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动词第三人称单数形式
·在动词后+s
·在以s,x,ch,sh,o结尾的动词+es
·以辅音字母+y结尾的动词,
先变y 为i,再加es
·特殊 have-has 等
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help
guess
fly
make
leave
fix
swim
know
play
close
go
study
get
read
bring
watch
写出下列动词的第三人称单数形式
carry do wash
visit exercise enjoy jump have
s
ies
es
s
es
s
s
s
es
s
ies
s
s
s
has
es
s
s
es
s
s
es
ies
s
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一般现在时否定式
be + not
don’t do / doesn’t do
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II 一般现在时的否定式
动词的否定式: be + not
I am a teacher.
You are a worker
She is a doctor
We are friends.
I’m not a teacher
You aren’t a worker
She isn’t a doctor.
We aren’t friends.
is not=isn’t
are not=aren’t
否定句
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,它与助动词Does有关,但是动词谓语一定要恢复为原形。当主语是其他人称时,它与助动词Do有关。
I like English.
She likes it very much.
We go to work by bike.
I don’t like English.
She doesn’t like it very much.
We don’t go to work by bike.
否定句
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概念:用 yes 或 no 来回答的疑问句叫做一般疑问句。
一般疑问句句首的第一个词一般读得比较重。
III一般疑问句
动词,疑问句要求把be 提前,第一人称变成第二人称。
疑问句
I am a teacher.
Are you a teacher?
You are a worker.
Are you a worker?
He is a student.
Is he a student?
We are friends.
Are you friends?
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