内容正文:
一般现在时
——动词第三人称单数
教学目标
1.掌握一般现在时态动词第三人称单数形式变化规律。
2.掌握含有动词第三人称单数形式的句子如何变否定句和一般疑问句。
教学重点:
掌握一般现在时第三人称单数的用法。
教学难点:
掌握一般现在时第三人称单数的用法。
一、什么是第三人称单数?
人称可分为三类:第一人称、第二人称和第三人称
第一人称: I we
第二人称: you
第三人称: he、she、it、they和人名类(如:Peter、Jane、my father等)
结合以上知识,第三人称单数就是he、she、it和单个的某人,也包括单个的动物、东西等。
二、动词为什么要变成相应的三单形式?
在一般现在时中,跟在第三人称单数后面的动词也要变成相应的三单形式,例如: I watch TV every day.
如果主语是三单,动词要变化:
He watches TV every day.
She watches TV every day.
Jane watches TV every day.
6
三、一般现在时动词第三人称单数形式的变化规则:
1.一般情况下,动词后直接加s
2.以s,x,sh,ch或o结尾的动词,在后面加es
3.以辅音字母加y结尾的动词,把y变为i,再加es
4.动词have遇主语是第三人称单数时,have改为has
一般情况下,直接在动词后+s ,
come
play
like
draw
read
comes
plays
likes
draws
reads
2.以s, sh, ch, x, o 结尾的动词,在词尾+ es
watch
teach
wash
go
watches
teaches
washes
goes
3.以辅音字母+ y 结尾的动词,变y 为i,再+ es
study
fly
studies
flies
4.不规则变化动词
have →
has
四、does和doesn’t 在句子中的用法
否定句:主语+don’t/doesn’t+动词原形+(其他)。
如: I don’t watch TV. 我不看电视。
当主语为第三人称单数时,要用doesn’t 构成否定句。
如: He doesn’t watch TV. 他不看电视。
注意doesn’t后面用动词原形watch,而不是watches。
12
一般疑问句:Do / Does+主语+动词原形+(其他)。
如: Do you watch TV?
Yes, I do. / No, I don’t.
当主语为第三人称单数时,要用does 构成一般疑问句。
如: Does she watch TV?
Yes, she does. / No, she doesn’t.
A、写出下列动词的第三人称单数。
drink ________ go _______ stay ________ make ________ have_______ pass_______ carry________ come________ plant_______ fly ________ study_______ wash________
look ________ teach_______ watch______
drinks
goes
stays
makes
has
passes
carries
comes
plants
flies
studies
washes
looks
teaches
watches
B、用括号内动词的适当形式填空。
6.The girl ___________(teach) us English on Sundays.
7.She and I ________(take) a walk together every evening.
8.Mike _______(like) cooking.
9.They _______(have) the same hobby.
10.My aunt _______(look) after her baby carefully.
teaches
take
likes
have
looks
B、用括号内动词的适当形式填空。
1.He often ________(have) dinner at home.
2.We _____________ (not watch) TV on Monday.
3.Nick ____________ (not go) to the zoo on Sunday.
4.______ they ________(like) the World Cup?
5._______ your parents _______(read) newspapers every day?
has
don't watch
doesn't go
Do like
Do read
C. 句型转换
1. I go to school by bus. (用He做主语)
______________________________________
2. Kim plays baseball very well. (变一般疑问句)______________________________________
3. She plays sports every day. (变否定句)
______________________________________
4. David doesn’t like French. (变肯定句)______________________________________
He goes to school by bus.
David likes French.
She doesn't play sports every day.
Does Kim play baseball very well?
课堂小结
一、一般现在时态动词第三人称单数形式变化规律。
二、含有动词第三人称单数形式的句子变否定句时,要用 doesn't + 动词原形。
三、对含有动词第三人称单数形式的句子提问时,要用助动词 does。
Homework
1、完成优化设计练习。
2、复习Unit4。
Thank you !
$$