Unit 5 Do you want to watch a game show?动词不定式（课件）(共26张PPT)-2024-2025学年八年级英语上册（人教版）

(共26张PPT)
Unit 5 Do you want to watch a game show
八年级英语上册
CONTENTS
动词不定式
Unit 5 Do you want to watch a game show
动词不定式由“to+ 动词原形”构成，具有动词、名词、形容词和副词的特征。动词不定式没有人称和数的变化，在句子中不能作谓语。
to+动词原型（动词不定式） to fly to study to get up to swim
to go to to write to listen to to read
to eat to drink to see to run
动词不定式的基本构成是“to+动词原形”
有时可省略不定式符号 to
否定形式是“ not+ to+动词原形”。
The driver failed to see the car in time. 这个司机没有及时看到汽车。
You'd better change your job. 你最好换一份工作。
The boss pretended not to see John and I. 老板假装没看见我和约翰。
to+动词原形
省略不定式符号to
not+to+动词原形
补语
主语
宾语
表语
定语
状语
补语
动词不定式可以作…
主语
to do 不定式在句中自己可以作主语， 相当于名词或代词， 表示具体的或将来的动作。
To learn English well is very difficult.


=It is very difficult to learn English well.

学好英语很难。
不定式作主语
真正的主语
形式主语
It 作形式主语
it is + adj. to do
It is + adj. for sb to do (用于评价事）
主语
to do 不定式在句中自己可以作主语， 相当于名词或代词， 表示具体的或将来的动作。
important：It’s important to read./ It’s important for me to read.
necessary : It’s necessary to drink. /It’s necessary for us to drink.
Interesting: It’s interesting to swim./It’s interesting for you to swim.
boring: It’s boring to watch TV./ It’s boring for them to watch TV.
adj.
It 作形式主语
It is + adj. of sb. to do (用于评价人）
主语
to do 不定式在句中自己可以作主语， 相当于名词或代词， 表示具体的或将来的动作。
kind : It’s very kind of you to help me.
polite: It’s very polite of you to give your seat to old people.
stupid: It's really stupid of you to tell a lie.
considerate: it's considerate of you to give me so much money.
adj.
2. It is +名词+ to do
3. 其他固定句型 It takes sb. some time to do
主语
to do 不定式在句中自己可以作主语， 相当于名词或代词， 表示具体的或将来的动作。
It is a good idea to go hiking on Sunday. 在周日去徒步是一个好主意。
It is my pleasure to help you. 很高兴能帮助你。
It takes my mother an hour to clean the house every morning.
我妈妈每天早上花费一个小时来打扫房间。
宾语
动词不定式可以作动词的宾语。
Would you like to see a film this evening
今天晚上你想去看电影吗
I hope to visit this place again.
我希望再一次参观这个地方。

不定式做like的宾语
不定式做hope的宾语
常见不定式作宾语的动词

decide决定 choose 选择 want 想要

plan 计划 agree 同意 expect 期望

refuse 拒绝 like 喜欢 hope 希望
只能用不定式作宾语的动词 afford , agree, decide, decline, fail, hope, offer, pretend,
promise, refuse , wish
只能用 -ing形式宾语的动词 admit, avoid, consider, deny, delay, enjoy, finish, imagine, mind, practise, risk, suggest, put off, give up
既能用不定式又能 -ing形式的动词 begin, start, like, prefer, remember, regret, need, try, mean
非谓语形式作宾语,大致有三种情况
1. 动词+疑问词+ to do
how+ to do：Please show us how to do that.
what+ to do: He has not decided what to do.
where+ to do : Do you know where to go
when+ to do: I am not sure when to meet.
whether+ to do: I don't know whether to stay or go.
who+ to do: I don't know who to ask for help.
tip
2. 如果动词不定式前面是why，后 to省略
Why not + do… Why not go to school today
Why don’t you + do … Why don’t you go there
3. 其他省略 to的
had better(not) +do … You'd better(not) leave now.
would rather + do…
I would rather stay at home and read a book.
tip
以上形式to省略
表语
不定式做表语表示目的、结果， 是对主语的补充说明。
My job is to plant flowers.
我的工作是种花。
To see is to believe.
眼见为实。
His dream is to be a teacher.
他的理想是成为一名老师。
定语
动词不定式所表示的动作一般后于谓语动词所表示的动作或在将来发生。如果不定式为不及物动词， 则需保留介词。
My mother has a lot of housework to do.
I need a boy to go with.
He is looking for a party to take part in.
动宾关系,家务活还没做
动宾关系,去的动作还没有发生
动状关系,参加的动作还没有发生
定语
They are the only team to win.
He is the first one to go to school.
I was the last person to arrive.
序数词 (first、 second 、 third)
形容词最高级
the only, the next, the last, the right
+ 名词
序数词，形容词最高级以及the only 修饰名词时候，后面用不定式。
状语
作状语表示目的、原因、结果和条件等。其逻辑主语必须与句子的主语保持一致。
In order to study English , he went to Australia.
为了学习英语，他去了澳大利亚。
目的状语，位于句首
She is crying with sadness to hear the news.
听到这个消息，她悲伤的哭了。
My mother woke up only to find everything is different.
我妈妈醒了后发现什么都变了。


结果状语， only表示强调
原因状语
补语
1. 固定搭配=动词+ sb. to do sth
tell sb. to do ask sb. to allow sb. to do
. 动词不定式可以作宾语补足语
I told him to clean his room. 我叫他打扫房间。
He asked me to wait a moment. 他请我等一会儿。
Mom allow me to watch TV. 妈妈允许我去看电视.
补语
2.省略 to的不定式作宾补语
see sb. do watch sb. do notice sb. do
make/ let/ have sb. do
. 动词不定式可以作宾语补足语
We often see the old man take a walk in the park.
我们经常看到那位老人在公园里散步。
The cold weather made me feel sleepy.
寒冷的天气让我感觉困倦。
课本练一练
仔细观察动词后面所接形式
课本练一练
watch a talk show
watch a TV drama
want to watch
a TV drama
watch a talk show
课本练一练
It’s interesting.
I like to watch sitcoms.
No, I want to watch the news.
I hope to fine out what’s going on around the world.
拓展练一练
1．____ more about rare wild animals, I spent some time
searching online last night.
A．To learn B．Learning C．Learn D．Learn
2．—Do you feel like _____ sports —No, I’d like _____ a good rest.
A．to play; to take B．playing; taking
C．playing; to take D．to play; taking
3．Yoga is my favorite sport and I often practice it ____ healthy.
A．keeping B．kept C．to keep D．keeps
A
C
C
拓展练一练
4．It’s important for us _____ hard in order to have a better life.
A．work B．to work C．working D．Works
5．When my friend saw me this morning, he stopped ____ to me.
A．talk B．to talk C．talking D．to talking
6．There were ____ many dresses in the shop. I couldn’t decide ____.
A．so; buy which B．so; which one to buy
C．such; which one to buy D．such; to buy which one
B
B
B
THE END