资源简介

(共13张PPT)
Section Ⅲ　Learning About Language
UNIT 1 ART
动词不定式作表语
观察下面的句子，体会黑体词的用法。
①Perhaps the best way to understand Western art is to look at the development of Western painting over the centuries.
②During the Middle Ages, the purpose of Western art was to teach people about Christianity.
③In this work, Monet's aim was to convey the light and movement in the scene...
④Our plan is to finish the work next week.
⑤The only thing I could do was to leave.
⑥The greatest happiness is to be able to work for the happiness of all.
⑦What I want to do seems to tell you something.
[自我归纳]
上面的句子中动词不定式都是作 ，表示具体的事情或将要发生的事情。动词不定式是 动词的一种，它没有人称和数的变化。动词不定式具有名词、形容词和副词的特征。
表语
非谓语
1．不定式作表语，表示目的。
The next step is to make sure that you know exactly what is required.
下一步你要真正弄清楚需要的是什么。
The purpose of education is to develop a fine personality in children.
教育的目的是发展儿童良好的品格。
2．不定式作表语，用于第一人称的疑问句中，表示征求意见。
What am I to say if they ask me the question
要是他们问我这个问题，我该怎么回答？
What am I to do if I have no money
如果没有钱，我该怎么办呢？
3．不定式作表语，用于被动语态，相当于can/could，should，ought to，must，具有情态意义。
You are to be rewarded.
你应该受到奖励。(should be)
It's nowhere to be found.
哪儿也找不到它。(can't be)
These books are not to be sold.
这些书不应该卖掉。(ought not to be)
4．不定式作表语，表示“同意、安排、命令、决定、劝告、意愿、禁止”等。
They are to marry next week.
他们将在下周结婚。(安排)
Children are not to smoke.
儿童不准吸烟。(禁止)
You must be patient and persistent if you are to succeed.
你想要成功，就必须有耐心，有毅力。(愿望)
5．不定式作表语，可以用主动形式表示被动意义。
She is to blame.
她应该受到责备。
A great deal is yet to do.
还有许多事要做。
Something is still to find out.
有些东西还有待查明。
6．不定式作表语通常可以跟主语进行位置互换。
My job is to clean the house today.＝To clean the house today is my job.
我今天的工作就是打扫房间。
My dream is to become an actor.＝To become an actor is my dream.
我的梦想是成为一个演员。
7．动词不定式与动名词作表语的区别。
动词不定式作表语，强调的是一次性的、具体的、将要发生的动作；动名词作表语，强调的是一般性的、抽象的、经常发生的动作。
His job is to paint the walls within two hours.
他的工作是两小时内粉刷这些墙。(一次性的、具体的、目前要做的事情，并不是他日常的工作)
His job is painting walls.
他的工作是粉刷墙。(这是他日常的工作)
[注意]　如果用作表语的不定式是解释主语中的do的具体内容，不定式中的to可以省略。
All I do is (to) sit here waiting for you.
我所做的就是坐在这里等你。
Ⅰ.单句语法填空
1．The festival is (carry) forward traditional culture and promote cultural exchange.
2．The purpose of this race is (inspire) us students to pay more attention to physical exercise.
3．Anyhow my goal is (provide) people with a life of high quality.
4．All I did was (press) the button.
5．You must speak out，if we are (remain) friends.
to carry
to inspire
to provide
(to) press
to remain
6．Their job is (make) wheelchairs for disabled people.
7．You appear (travel) to quite a lot of places around the world.
8．The weather seems (improve) now.Let's go for a picnic.
9．To be kind to the enemy is (be)cruel to the people.
10．What I would suggest is (put) off the meeting.
making
to have travelled
to be improving
to be
to put
Ⅱ.完成句子
1．我的建议是立刻开始干活。
What I would suggest is at once.(start)
2．他希望能被那所大学录取。
What he hoped ．(admit)
3．最好的办法是加入一个英语俱乐部。
The best way ．(join)
to start work
was to be admitted into that university
is to join an English club
4．首先是要认真听老师讲课。
The first thing carefully.(listen to)
5．当我们遇到困难时，我们的主要任务是找出问题的根源。
When we are faced with difficulties, our main task the root of the problem.(find out)
is to listen to the teacher
is to find out

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