Unit4
I have a pen pal
B . Let’s learn
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绿色圃中小学教育网http://www.lspjy.com
I like playing football.
He likes reading stories.
比较：
动词原形
动词第三人称单数形式
like
你的新发现？
likes
2.动词发生了哪些变化？
1.什么时候用动词第三人称单数形式？
4.动词的变化有什么规律？
3.什么情况下动词需要这样变化？
观察并总结：???
Does she/he cook Chinese food?
Cooks Chinese food
My Pen Pal
cook Chinese food
cook
单三
s
He (live) in Australia,but he often (cook) Chinese food.
Let's say
lives
cooks
一般情况在词尾加s,
like—likes …
s
Does she/he study Chinese?
studies Chinese
My Pen Pal
study Chinese
stud
单三
1、以辅音字母+y结尾的动词变第三人称单数把y为i再加es
fly--flies study-- studies
i
es
2、以元音+y结尾的单词，加s
play-- plays say-- says
stud
es
i
He Chinese
every day.
My Pen Pal
studies math
every day.
in the morning.
after lunch.
at 8:00.
学数学
学英语
学电脑
学美术
主语（第三人称单数）
studies
studies English
studies computer
studies art
Does she/he do word puzzles?
does word puzzles
My Pen Pal
do word puzzles
do
单三
以o结尾的动词变第三人称单数结尾加es。
go– goes do– does
He often does word puzzles at school.
es
es
Does she/he go hiking?
goes hiking
My Pen Pal
go hiking
go
单三
es
es
He hiking on Sundays.
My Pen Pal
___ (人物）often goes to ___（地点） by bus.
goes home
on foot
Let's say
Let’s practise
does word puzzles
cooks Chinese food
studies Chinese
goes hiking
1.一般情况在词尾加s, like--likes
2.以o. s .x .sh. ch.等结尾的单词，加es
go-- goes teach-- teaches push --pushes
3.以元音+y结尾的单词，加s
play-- plays say-- says
4.以辅音字母+y结尾的单词变y为i再加es
fly-- flies study-- studies
动词的第三人称单数形式的变化规律
read –
look –
work –
say –
run –
go –
do –
watch –
teach –
have –
一般现在时动词第三人称单数的变化规则
1. 一般情况下，动词后直接加s.
Eg：works, gets, reads等.
2. 以s，x，ch，sh或o结尾的动词，在后面加es
Eg:goes, teaches, watches等
动词have遇在主语是第三人称单数时，have改为has，如：He has an interesting book .

写出下列动词的第 三 人称单数形式
reads
looks
works
says
runs
goes
does
watches
teaches
has
在英语中动词的第三人称单数形式的读音规律
cooks cooks s s s
lives lives z z z
reads reads z z z
does does z z z
goes goes z z z
studies studies z z z
watches watches iz iz iz
Beijing
Shanghai
Nanchang
Does your pen pal live in …?
动词原形
你发现了什么？
助动词放在句首
Does he teach English?
Yes ,he does.
绿色圃中小学教育网http://www.lspjy.com
绿色圃中小学教育网http://www.lspjy.com
绿色圃中小学教育网http://www.lspjy.com
绿色圃中小学教育网http://www.lspjy.com
绿色圃中小学教育网http://www.lspjy.com
Does Mr. Black live in Beijing ?
Yes , he dose .
Does Mr. Black live in Nanchang?
No ,he doesn’t .He lives in Beijing .
变一般疑问句,找动词， 动原句首加do；如果动词是三单，助动词does句首请，主语紧随在其后，后面动词改原形,其他部分依次站。
I go to school on foot.
you go to school on foot
Do
?
Amy goes to school on foot.
Amy go to school on foot
Does
es
?
动词原形
动词第三人称单数
仿照例子写句子：
例子: teach English
→He teaches English.
→ Does he teach English?
→ Yes, he does.
→ No, he doesn’t.
1、 live in Australia
He lives in Australia.
Does he live in Australia?
Yes,he does.
→
No,he doesn’t.
→
→
→
2、fly kites on the weekend
He flies on the weekend.
Does he fly on the weekend?
Yes,he does.
→
No,he doesn’t.
→
→
→
一、我会写出下列单词的第三人称单数形式。
live __________ 2. study ________
3. watch _________ 4. go ___________
5. do ___________ 6. play___________
Let's write
lives
studies
watches
goes
does
plays
二、我会选出正确的单词完成句子。
1．He ___________( live / lives ) in Beijing.
2. __________ ( Do / Does ) your pen pal live in China?
3. Mr. White ___________( study / studies ) Chinese.
4. I often_______( go / goes ) to school on foot.
My mother ________( go / goes ) to work by bus.
5. Bill likes __________( watch / watching ) TV.
He often __________( watch / watches ) TV on the weekend
Let's write
lives
Does
studies
go
goes
watching
watches
在英语中一般现在时常以动词原形表示，但当主语是第三人称单数时（he she it…），应用动词的第三人称单数形式.动词的第三人称单数形式的变化规律：
1.一般情况在词尾加s, like--likes
2.以o. s .x .sh. ch.等结尾的动词，加es
go-- goes teach-- teaches fix--fixes
wash –washes pass--passes
3.以元音+y结尾的单词，加s
play-- plays say-- says
4.以辅音字母+y结尾的单词变y为i再加es
fly--flies study-- studies
小结
总结:

Does＋单三主语＋ 动词原形＋其他？

肯定回答：Yes, he／ she does.
否定回答：No, he ／she doesn’t.
Thank you !