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课件网) UNIT 3 Discover Useful Structures 动词-ing形式作主语 Loving him is like driving a new Maserati down a dead end street Faster than the wind, passionate as sin, ending so suddenly him is like trying to change your mind once you're already flying through the free fall Like the colors in autumn so bright just before they lose it all him was blue, like I'd never known him was dark gray, all alone him was like trying to know somebody you never met But loving him was red him was red Touching him was like realizing all you ever wanted was right there in front of you Memorizing him was as easy as knowing all the words to your old favorite song Fighting with him was like trying to solve a crossword and realizing there's no right answer Regretting him was like wishing you never found out that love could be that strong Loving Losing Missing Forgetting Loving subject Lead-in What’s in common 1.To master the basic grammar rules of V-ing form as the subject. 2. To understand the grammar rule of “It” as formal subject. 3. Put what has been taught into practice. Learning objectives Activity 1 Observe and discover 动词-ing形式作主语 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 reindeer was a way of life for the Sami. Being in such a beautiful and wild place makes me feel blessed to be alive. 单个v-ing作主语，谓语动词用_____ ① ② ③ ④ 单数 Find more sentences with the –ing form as the subject from the reading passage. 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 reindeer was a way of life for the Sami. Being in such a beautiful and wild place makes me feel blessed to be alive. ① ② ③ ④ Going to bed early and getting up early good for our health. Drawing and playing football what I took interest in as a teenager. 画画和踢足球是两件事 两个或两个以上的动词-ing短语作主语时，如果表示一件事， 谓语动词用 ；如果表示两件或多件事情，谓语动词用 。 is are 早起早睡是一件事 Observe and discover 单数 复数 [即时演练]———单句语法填空 (1)_____(read) aloud is very important for us to learn a foreign language. (2) Collecting stamps (be) my hobby. (3) Sitting and talking to old friends (be) a pleasant way to spend an evening. (4)Listening, speaking, reading and writing _____ (be) basic skills of a language. (5) _____（ask）a woman’s age (be)impolite in our country. Reading is are are Asking is Activity 2 Observe and discover Playing video games is a waste of time. It is a waste of time playing video games. 形式主语 真正主语 It在句首作形式主语，动词-ing形式后置作真正的主语，用形容词或名词作表语。 It作形式主语 it作形式主语,常用动名词短语作真正主语的句式: It ... ...
