UNIT 3 Section Ⅲ　Learning About Language——动词 ing形式作主语（Word教参）【状元桥·优质课堂】2021-2022学年新教材高中英语选择性必修第一册（人教版）

Section Ⅲ　Learning About Language——动词­ing形式作主语 (见学生用书P36) 1．It was foolish of you to lie to your teacher. 2．It's no use trying to him to change his mind. 3．This is an English­speaking country. 4．In order to arrive there on time, I got up early. [自我感知] 1．句1、2中黑体部分在句中均作主语。 2．根据句1、2可知，动词不定式和动词­ing形式作主语时，可以用it作形式主语。 3．句3中的动词­ing作定语，句4中的不定式作状语。 一、动词­ing的时态和语态 动词­ing通常有以下几种变化形式(以do为例)： 　　语态 时态　　　 主动语态 被动语态 一般式 doing being done 完成式 having done having been done ►Sometimes being punished may be a good thing. 有时被惩罚可能是一件好事。 ►Having been given a toy car as a gift made the boy laugh. 那男孩收到一辆玩具汽车作为礼物后笑了。 [即时训练1]——完成句子 (1)Being_exposed_in_the_sun for a long time does great harm to your skin. 暴露在阳光下太长时间会对你的皮肤造成极大伤害。 (2)Having_been_bitten by my dog made Linda refuse to play with me again. 琳达已经被我的狗咬了，所以她拒绝再和我玩。 二、句法功能 (一)动词­ing形式作主语 1．动词­ing形式作主语的功能及基本用法 功能：动词­ing形式作主语时，多表示经常性、习惯性的动作，谓语动词多用单数形式。 ►Using cocaine increases the user's heart rate and blood pressure.使用可卡因会加快使用者的心率并使血压升高。 ►Wasting a person's time is the same as killing him for his .浪费别人的时间无异于谋财害命。 [易错精点] 意义不同的两个动词­ing形式并列作主语时，谓语动词需用复数形式。 ►Listening to the English tapes and watching English films are good ways to learn English. 听英文磁带和看英文电影是学英语的好方法。 2．形式主语it代替动词­ing形式作主语 ►It is no use talking to him—he won't listen. 跟他谈没有用——他不会听的。 ►It is a waste of time talking about such useless things. 谈论这些没用的事情是在浪费时间。 [名师指津] (1)It is＋adj.＋doing sth It is useless doing sth　　　　　做某事无用 It is worthwhile doing sth 做某事是值得的 (2)It is a waste of＋n.＋doing sth It's a waste of time doing sth 做某事是浪费时间 (3)It is no＋n.＋doing sth It's no good/no use/no fun doing sth 做某事没好处/没用/没意思 [即时训练2]——单句语法填空 (1)(2019·天津卷)Learning(learn) to think critically is an important skill today's children will need for the future. (2)(2021·1月浙江卷)He remembered landmarks, but since he didn't know his town's name, finding(find) a small neighborhood in a vast country proved to be impossible. (3)It's a waste of time trying(try) to such a stubborn person. (4)It is no