人教版(新教材)高中英语选修1Unit 3 Fascinating Parks优质学案：Grammar-The -ing form(3) as the subject

1、Grammar-The 4ng form(3) as the subject语法导学 感悟规律重点难点剖析巴语法感知感知以下句子，完成方框下的小题Even though the sun is brightly shining, telling whether it is morning or night is impossible.Getting here is quite difficult, so apart from the Sami very few people have ever seen Sarek.For hundreds of years， looking after rei

2、ndeer was a way of life for the Sami.Being in such a beautiful and wild place makes me feel blessed to be alive.以上句中动词-ing在句中作主语。.通过以上例句可知动词ing作主语时，谓语动词应该用单数形式。r语法精析概念：动词-ing形式是动词的一种非谓语形式，包括现在分词和动名词两种。动词-ing形式在句中的语法作用：动名词在句中作主语、宾语、表语和定语、本单元重 点讲解动名词作主语的情况。.动名词作主语时，往往表示经常性、习惯性的动作，通常置于句首。Reading aloud

3、is a good way to learn a language.大声朗读是学习语言的一种好方法。Wasting a person s time is the same as killing him for his property.浪费别人的时间无异于谋财害命。注意：(1)不定式作主语表示具体的或一次性的动作。To lie to her is wrong.对她撒谎不对。动名词作主语时，谓语动词用单数。Climbing mountains is really difficult for the old.对于老人来说爬山确实困难。.形式主语it代替动名词作主语。此类句式常见的有：It s a

4、waste of time doing sth.做某事是浪费时间。It s worthwhile doing sth.做某事是值得的。It s no good/use/fun doing sth.做某事没用/没意思。It is a waste of time persuading such a person to join us.劝说这种人加入我们是浪费时间。It is worthwhile reading such a wonderful novel.这么好的书很值得一读。It s no use complaining without taking action.不行动只抱怨是没有用的。注意

5、：动名词作主语用it充当形式主语的情况很少，上表中是最常见的句式结构。不定式作 主语时，常用it充当形式主语，如：It s not easy to learn a foreign language well.学好一门外语不容易。It s difficult for us to finish the work in a week.对我们来说，一周之内完成这项工作很困难。.当句型There is no.表示“不允许、禁止某种行为的发生或存在”时，需用动名词作 主语。There is no denying that the environment is from bad to worse.不能否认环

6、境状况正在逐步恶化。There is no joking about such matters.这种事开不得玩笑。达标检测 当堂检测基础达标演练NI .用所给词的适当形式填空It is no use keeping(keep) silent about such a matter.His not gettingfnot get) to the station on time made everyone worried last week.Be careful! To play(play) with fire near the wood will be dangerous.Swimming is

7、(be) a good sport in summer.It is a waste of time trying(try) to persuade him to give up playing computer games.There is no telling(tell) what he is going to do.It is necessary for us students to help(help) each other in trouble.To get(get) a PhD in two years after graduating from university is his wish.II .完成句子Writing English novels for him is really great fun.对他来说写英语小说很有趣。Since then, Inding ways to grow more rice has been his life goal.从那时起，寻找方法生产更多的水稻是他的人生目标。His getting up late in the morning made him late for class.他早上起晚了，导