(共11张PPT)
语法焦点
与同步作文指导
语法焦点
一般现在时的运用
一、一般现在时的定义:
一般现在时是表示现阶段经常、习惯做的动作或存在的状态。
二、一般现在时句子的谓语结构
1.be动词+表语
be动词根据主语人称、数的不同,选择am,is或are,表语用形容词、数词及介宾结构充当。含“be+表语”结构句子由肯定句转化为一般疑问句时,将be动词is或are提前;变为否定句时在be动词am,is或are后加not。
语法焦点
一般现在时的运用
二、一般现在时句子的谓语结构
2.实义动词作谓语
(1)当句子主语是第三人称单数形式时,实义动词用单数形式。将句子由肯定句变为一般疑问句时,在句首加助动词does,同时将句中谓语动词由单数形式变回原形;变否定时,在主语后加doesn’t,也同时将句中谓语动词变回原形。
eg: This boy often plays computer games after school.
这个男孩经常放学后玩电脑游戏。
Does this boy play computer games after school
This boy doesn’t play computer games after school.
语法焦点
一般现在时的运用
二、一般现在时句子的谓语结构
2.实义动词作谓语
(2)当句子主语为非第三人称单数形式时,实义动词用原形。这时将句子由肯定句变为一般疑问句时,在句首加助动词do;变为否定句时在主语后加don’t。
eg: Mr.Zhang’s children eat lunch at school on Monday.
Do Mr.Zhang’s children eat lunch at school on Monday
Mr.Zhang’s children don’t eat lunch at school on Monday.
语法焦点
一般现在时的运用
附:动词第三人称单数形式的构成
a.一般动词后加-s构成。
eg: like—likes, play—plays
b.一般以辅音字母+ y结尾的动词将y变为i再加-es。
eg:study— studies
c.一般以s,x,ch,sh或o结尾的单词,后加-es。
eg: watch—watches
d.不规则形式。
eg: have—has; be—is
一、用所给动词的适当形式填空。
1.The girls (watch) TV at home every day.
2.The picture of her family (be) on the wall.
3.David (have) two basketballs.
4. Han Mei (have) a soccer
5.My grandfather ( not play) sports in the morning.
强化训练
watches
is
has
Does have
doesn’t play
二、句型转换,每空一词。
1.I have a computer.(改为一般疑问句)
you a computer
2.His brother has a soccer ball.(改为否定句)
His brother a soccer ball.
3.Does he have a ping-pong ball (作否定回答)
, .
4.Her uncle has five basketballs.(改为一般疑问句)
her uncle five basketballs
5.I do my homework every day after school.(改为否定句)
I my homework every day after school.
强化训练
Do have
doesn’t have
No he doesn’t
Does have
don’t have
写作指导
本单元的话题是谈论体育运动及收藏,要运用一般现在时态来写。
常用句型归纳如下:I have…He/She has…
写作示例
你和你的朋友Emma都喜欢运动,你们每天都做运动。你经常打篮球,Emma经常踢足球。你收藏有八个篮球,三个乒乓球拍,Emma收藏有六个棒球和十个足球,但Emma没有篮球。要求:用以上材料写一篇60词左右的短文。
经典示范
My friend Emma and I like sports. We play sports every day. I often play basketball. I have eight basketballs and three ping-pong bats. Emma often plays soccer. She has six baseballs and ten soccer balls. But she doesn’t have a basketball. It is good for us to play sports.
Thank you!