课件19张PPT。外研2003课标版 必修三 Module 4 Sandstorms in Asia
Grammar
What’s your dream?My dream is to be on the top of the world.
I want to earn enough money to support my family.
I want to be a doctor in the future.
I wish to go to college.The Infinitiveto do 动词不定式作主语To look after my pets properly takes a lot of time.
To chat with Miss. White is a pleasant thing.
To be a doctor is hard.
为了避免头重脚轻,往往由it代替它作形式主语,不定式则移至句后It takes a lot of time to look after my pets properly. It is a pleasant thing to chat with Miss. White. It is hard to be a doctor. It takes/took/has taken sb +时间/金钱 + to do sth It’s + n. + to do sth.It’s +adj. (for/of sb) to do sth. It’s +adj. (+for/of sb) to do sth. It’s very kind of you to help me.
It’s not polite of him to speak to old people like that.
It’s not easy for us Chinese to learn English well. You are kind.He isn’t polite.To learn English well is not easy.当形容词描述的是【人】的性格特征、品质等时,如kind, good, nice, clever, careless, polite, foolish,stupid,wise等,用of sb;
当形容词说明【事情】的属性特点时,用for sb.practice早上大声朗读英语对我们有好处。
不说再见就离开是很不礼貌的。
走路上学花掉了我大概10分钟时间。
你这样说真是太好了。
To read English aloud in the morning is good for us.To leave without saying goodbye is impolite.To walk to school took me about 10 minutes.It’s nice of you to say so. 作宾语I want to tell you a story.
They begin to work at 8 every morning.
同意提出做计划,
要求答应来帮忙。
准备决定遭拒绝,
敢于选择有希望。
不能做到莫假装,
设法做成决心坚。agree, offer, intend, plan demand, ask, promise, help prepare, decide, refuse,
dare, choose, wish, hope, want, expect
fail, pretend,
manage, determinee.g. 我发现很有必要跟他再谈一次。
我觉得学好英语很重要。
她使得做饭变得轻松。
这个人发现要睡着很难。
The man found it difficult to get to sleep.
动词不定式作宾语时,若其后带有补语,则要把不定式放在句后,用it作形式宾语I found it necessary to talk to him again.I think it important to learn English well.She made it easy to cook.作表语My job is to feed animals.
The best way is to talk to your parents.
My purpose is to help you solve this problem.
To see is to believe.作定语We have a lot of things to eat.
She’s the first person to think of the idea.
There’s nothing for us to worry about.
She has no paper to write on.
He has no house to live in. 不定式中的动词为不及物动词时,其后应加上一个含义上所需的介词。 be+to do作状语He went out to buy a paper.
She is too young to go to school.
He is old enough to go to school.
He woke up to find everybody gone.
I’m sorry to hear your grandma is ill.
We are glad to meet you.
. 目的状语结果状语当表示意料之外的结果时原因状语作补语The teacher asked us to read English for half an hour in the morning.
The doctor advised him to drink more water.
. 动词 + sb. + to do sth 作补语省to的不定式
.
. I felt someone open my door.
You must watch me do everything.
Yesterday I saw him play basketball on the ground. The boy made the baby cry.
The baby was made to cry by the boy. 变为被动语态时,动词要加上toTo be cycling in a sandstorm is frightening for her
at that time.
?To solve sandstorms, what have scientists done ?
?Why do sandstorms appear to have increased in China?
?What is frightening in a sandstorm for Huang Xiaomei?
?Sandstorms in China appear to have increased in recent
years as a result of desertification.
?Scientists have tried many ways to solve this problem and in China, a mass campaign has been started to help solve it.
?不定式的时态同时发生之后发生正在进行之前发生一般式 (to do)
进行式 (to be doing)
完成式 (to have done)
Complete the following sentencesHe is said 据说他要出国学习了。据说他正在国外学习。据说他在国外学习过。to study abroad.to be studying abroad.to have studied abroad.不定式的语态和否定式一般式 (to be done)
完成式 (to have been done)
当不定式的逻辑主语是不定式所表示的动作的承受者时,?不定式要用被动语态。There is nothing to be done when you are caught in a sandstorm.
To have been caught in a sandstorm was a terrible experience.
He is said to have been killed by a thief.
I told him not to swim in the river because it’s dangerous.
不定式的否定形式是在不定式符号?to?前加?not?构成
区别:
I have something to wash.
I have something to be washed.
I do it.Maybe other people or I do it. 1. It’s frightening ________ in the road in a sandstorm. I hope I reach home soon.
2. Experts hope ________ more about the movement of sandstorms.
3. I’d like ________ about the situation before now.
4. The work needs _______________ by the end
of the week.
5. My father was out of the city when the
sandstorm came. He was very glad ________ it.
6. ________ a real sandstorm was very
frightening. Practice (P34) to walk to learn to be told to be completed to have missed To seeSummary to do to be done to be doing to have done to have been done