Unit 3 Learning About Language—语法·提升语言能力 （语法项目—动词 ing 形式作主语）（课件PPT）-【新课程学案】新教材2022-2023学年高中英语选择性必修第一册（人教版2019）

Learning About Language—语法·提升语言能力 课时目标 1.理解和掌握动词-ing形式作句子主语的功能和意义，能够运用动词-ing形式短语作主语描述具体的行为或习惯等。 2.掌握本课时的重点词汇。 语法项目——动词-ing形式作主语 初识语法——在美文运用中体悟　 Li Hua is addicted to searching information on the Internet.His mother is worried about his health and advises him to surf the Internet properly, but ①it is no use persuading him because he won't listen.This is what his job requires.His mother wants him to change his job, but he likes it and enjoys it.②Staying up late has become his habit.There is no way, otherwise he will not finish the task assigned by the leader.In my opinion, ③it is no good living in excess.④Working hard is one thing and ⑤having a good rest is another.There is no denying that we should form a good routine. ①it作形式主语，动词-ing形式的短语persuading him作真正的主语； ②动词-ing形式的短语Staying up late作主语； ③it作形式主语，动词-ing形式的短语living in excess作真正的主语； ④动词-ing形式的短语Working hard作主语； ⑤动词-ing形式的短语having a good rest作主语。 慧学语法——运用“形式—意义—使用”三维动态语法观　 一、动词-ing形式(短语)作主语的意义　 [先感知] ①(教材P26典句)Getting here is quite difficult, so apart from the Sami very few people have ever seen Sarek. ②(教材P26典句)For hundreds of years, looking after reindeer was a way of life for the Sami. ③To lie to her is wrong. [明规则] (1)动词-ing形式(短语)作主语往往表示抽象的、概念性的动作，可以是多次的、经常性的行为。 (2)不定式作主语表示具体的或一次性的动作。 (3)谓语动词常常使用单数形式。　　 [对点练] (1)单句语法填空 ①(2021·新高考Ⅰ卷)Being a page turner (require) plenty of practice. (2)完成句子 ② is a good way to learn a language. 大声朗读是学习语言的一种好方法。 ③ is not a good idea. 今天下午去游泳不是个好主意。 requires Reading aloud To swim this afternoon 二、形式主语it代替动词-ing形式(短语)作主语 [先感知] ①It is no use crying over spilt milk. ②It's useless quarrelling with him. ③It is a waste of time persuading such a person to join us. ④From my point of view，it is well worthwhile watching the opening ceremony of the music festival. [会发现] ①It's no good/no use/no fun doing sth.意为 _________________________ ②It's useless doing sth.意为___________