人教版(新教材)高中英语选修3Unit1 Art精品学案：Grammar-Infinitives(2) as the predicative(步步高)

1、GrammarInfinitives(2) as the predicative语法导学/感悟规律 重点难点剖析 “、语法感知感知以下课文原句，补全方框下的小题(l)Perhaps the best way to understand Western art is to look at the development of Western painting over the centuries.(2)During the Middle Ages, the purpose of Western art was to teach people about Christianity. (3)In t

2、his work, Monet s aim was to convey the light and movement in the scene.在以上句子中，动词不定式都是作表语,表示具体的事情或将要发生的事情。语法精析动词不定式是非谓语动词的一种，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，在句中可以作主语、宾语、表语、定语、状语、宾语补足语等，但不能作 谓语。本单元主要复习动词不定式作表语的用法。一、基本用法动词不定式可以放在be, become, sound, taste等系动词后面作表语。具体用法如下：.表不目的。The next step is to make s

3、ure that you know exactly what is required.下一步是确保你确切知道需要什么。The purpose of education is to develop a fine personality in children.教育的目的是开展儿童美好的品格。.表示事态开展的结果、预期的结果、不幸的命运或预言。That experience was to change his whole life.那次经历会改变他的整个生活。You must speak out, if we are to remain friends.如果我们要继续做朋友，你必须直言不讳。You

4、 are to die at ninety-eight.你会在98岁时去世。.用于第一人称疑问句，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，我该怎么回答呢？What am I to do if I have no money?如果没有钱，我该怎么办呢？.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)It s nowhere to be found.哪儿也找不到它。(can t b

5、e)These books are not to be sold.这些书不应该卖掉。(ought not to be).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 if you are to succeed.想要成功，就必须有耐心。(愿望).不定式作表语，可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

6、。Something is still to find out.有些东西还有待查明。二、动词不定式和动名词作表语的区别动词不定式和动名词都可以作表语。但用法有区别：表示一般的、泛指的或习惯性的行为用 动名词；表示具体的、一次性的或将来的动作用不定式。Mary s task is to set the table.玛丽的任务是要去摆桌子。His job is looking after sheep.他的任务是照看羊。但这种区别并不是绝对的。例外的情况也不少，比方在job, problem等名词后面就可用 不定式或动名词作表语，且意思区别很小。如：The problem is finding th

7、e time to get things done.问题是要找到完成这些事情的时间。The problem was to find the right place quickly.问题是要迅速找到合适的地方。达标检测/当堂检测基础达标演练NI .翻译句子To be kind to the enemy is to be cruel to the people.对敌人仁慈就是对人民冷酷。My chief purpose is to point out the difficulties of the matter.我的主要目的是指出这件事的困难。What I would suggest is to

8、put off the meeting.我建议推迟会议。Our work is serving the people. 我们的工作是为人民服务。. What he likes is taking a walk after supper. 他喜欢的事情是晚饭后散步。n.语法填空My aim in life is 6.(protect) the environment for future generations.! want to become 7. environmental consultant after graduation.Many people think that pollutio

9、n cannot 8.(stop) if we want the country to develop.But that is not true.We can cut back on 9.(danger) and dirty waste from factories.Although a factory produces a large quantity of goods, it does not mean that it has to pump a lot of pollution into the environment.! also want to teach people to buy

10、 products 10. have been recycled.This is much 11. (good) for the environment, because it means we do not need to cut down many trees.Companies and businesses can still operate, 12. the Earth will not have to suffer.There is no 13.(debate) that we also have a problem with population.The number of peo

11、ple in the world keeps growing, and we 14.(produce) more rubbish and using up more raw materials.What if they run out? I am confident that if we are all willing 15.(work) together, we can overcome these challenges and keep the Earth clean and healthy.语篇解读 作者在本文中号召大家保护环境，为将来的子孙后代创造一个好的地球环境。K答 案Hto pr

12、otectK解析考查非谓语动词。此处是不定式作表语，表示将来的动作。K答案UanK解 析I考查冠词。此处表示泛指，“一位环境顾问”，又因environmental以元音音素开头，故用ano. K 答案 Dbe stoppedK解析I 考查动词的语态。此处意为：很多人认为如果我们想要国家开展，污染就不能被 停止。故用被动语态。K答 案XdangerousK解析I 考查词性转换。and前后连接并列的形容词修饰名词waste。K答 案Xthat/whichK解析I 考查定语从句。此处关系词引导定语从句修饰先行词products,从句中缺主语， 故用which或that引导。K 答 案 U betterK解析1 考查形容词比拟级。“much +形容词比拟级”表示“得多”。此处意为： 这对环境更好一些。故用比拟级。K答案H butK解 析I 考查连词。公司和企业仍旧能够运转，但是地球将不再需要遭受折磨了。此处表 示转折。K答 案U debatingK解 析1 考查词性转换