Unit 2 I'll help to clean up the city parks. 语法专题课件

(共16张PPT)
八下英语
Unit 2 I'll help to clean up the city parks
语法专题——动词不定式
动词不定式的用法
The girl could visit the sick kids in the hospital to cheer them up.
课本原句：
这个男孩可以帮助打扫城市公园。
The boy could help to clean the city park.
这个女孩可以去医院看望生病的孩子，鼓励他们。
The girl could volunteer in an after-school study program to teach kids.
这个女孩可以在一个课后学习项目当志愿者，教小孩。
动词不定式的构成
to do
动词不定式的用法
作主语
To have a good sleep is very important for our health.
谓语
不定式结构做主语
拥有好的睡眠对我们的健康非常重要。
作表语
My dream is to be a teacher.
系表结构
我的梦想是成为一名老师。
动词不定式的用法
作宾语
I plan to go hiking this Saturday.
谓语
不定式结构作宾语
作宾语补足语
She invited me to go to her birthday party.
谓语
宾语
不定式结构作宾语补足语
作定语
He's the only one to get there.
动词不定式的用法
作状语
I got up early to catch the early bus.
不定式结构作目的状语
动词不定式的用法
特殊疑问词+动词不定式
Could you please tell me how to do it？
不定式作宾语补足语
Andy doesn’t know what to wear.
不定式作主语
How to deal with the problem is the most important to us.
不定式作宾语
动词不定式的常见搭配
decide to do sth. 决定做某事
Andy decided to work there.
plan to do sth. 计划做某事
I promise not to do it again.
promise to do sth. 承诺做某事
Andy planned to go on a picnic this weekend.
refuse to do sth.拒绝做某事
The child refused to eat the potatoes.
动词不定式的常见搭配
agree to do sth. 同意做某事
Andy’s parents agree to let her go out with her friends.
forget to do sth. 忘记去做某事
I forgot closing the windows this morning.
forget doing sth. 忘记曾经做过某事
I forgot to close the windows this morning.
我今天早上忘记关窗了。（窗没有关）
我忘记我今天关了窗。（窗关上了但是“我”忘记了）
动词不定式的常见搭配
tell sb. to do sth. 告诉某事做某事
Our teacher told us not to swim in the river.
advise sb. to do sth. 建议某事做某事
Andy advised me to listening to music when I felt upset.
expect sb. to do sth.期待谋某人做某事
My parents expect me to get good grades in the final exam.
巩固练习题：
用所给单词的适当形式填空：
Parents should always tell their kids ___________(not talk) with strangers.
—Sam, don’t forget____________(return) the book to the library tomorrow.
—OK, I won’t.
3. We set up this group ____________(help) disabled people like Ben Smith.
4. —Can you come to my birthday party tonight
—Yes, I’d love to. But I have to finish ______( do ) my English homework first.
not to talk
tell sb. not to do sth. 告诉某人做某事
to return
forget to do sth. 忘记做某事
to help
不定式结构作目的状语
doing
finishing doing sth.完成做某事
巩固练习题：
5. Mr. Zhou is good at cooking and he has decided __________(open) his own restaurant.
6. Sue practices __________(play)the violin hard and often gives wonderful performances.
7. . It’s necessary for us___________(learn) English well.
to open
decide to do sth.决定做某事
playing
practice doing sth. 练习做某事
to learn
It’s +形容词+ for sb. + to do sth.
8. Mr Wu has recommended many books. Have you decided which ______ (read) first？
9. It often takes me two hours ______(do) my homework in the evening.
10. You should do what you can____________( improve) your English, Li Ming.
to read
特殊疑问词+to do
to do
It takes sb.+时间+ to do sth.
花某人多长时间去做某事
to improve
不定式结构作状语
11. I’d love to go hiking with Andy, but I have much homework ______(do).
12. It was raining. My father asked me ___________(take) raincoat.
13. You need __________( make) study plan first.
to do
不定式结构作宾语补足语
to take
ask sb. to do sth. 要求/叫某人做某事
to make
need to do sth. 需要做某事
14. Mary is so sad. We have to do something ______________(cheer) her up.
15. Tom is a humorous boy and he always make us _________(laugh)
16. My parents don’t allow __________(go) out with my friends at night.
17. Jane, John needs help. Let’s ________( help) him.
to cheer
不定式结构作定语
laugh
make sb. do sth. 使某人做某事
使役动词+动词原形
to go
allow sb. to do sth. 允许某人做某事
help
let sb. do sth. 使某人做某事
使役动词+动词原形
18. My mother gets up early every morning __________(make) breakfast for me.
19. I wound never give up the chance ________________( achieve） my dream.
20. He wants _________ (learn) more about this excellent movie.
to make
不定式结构作状语，表目的
to achieve
不定式结构作定语
to learn
want to do sth. 想要做某事
Thank you！