(
课件网) Unit 3 Discovering Useful Structures In this class we will 1. To master the usages of -ing forms serving as the subject. 2.To use -ing forms freely as the subject in communication and writing. Learning objectives 1. Swimming is my favourite sport. 主语 2. I enjoy flying kites in spring. 宾语 3. The most challenging part of learning English is speaking. 宾语 表语 Step I Lead-in 观察下面句子并分析画线部分在句中所作的成分 Step I Lead-in 观察下面句子并分析画线部分在句中所作的成分 4. I’d like a house with a swimming pool. 定语 5. Not saying a word, she left. 状语 6. I caught him smoking outside. 宾语 补足语 Step II Presentation Fill in the blanks and analyse the structure. ①For hundreds of years, _____(look) after reindeer was a way of life for the Sami. ②_____(create) buildings such as these enables us to live in closer harmony with our environment. ③_____(sing) and _____(dance) is her talent. ④_____(sing) and _____(dance) are her hobbies. looking Creating Singing Summary: 动词-ing形式可以作句子的_____,常将其看作整体, 谓语动词用_____。 主语 主语 dancing Singing dancing 主语 主语 单数 单个的动词-ing形式作主语时,谓语动词用单数; 意义不同的两个动词-ing形式并列作主语时,谓语动词用复数; Step III Exercise 单句语法填空/补全句子 ①Travelling to conferences, lectures, workshops, and the like—frequently by plane—_____(view) as important for scientists to get together and exchange information.(2022·浙江1月卷) ②However, _____(be) a third－culture kid is not always easy. ③However, _____ could damage local culture. 然而, 将太多人带到偏远地方可能会破坏当地文化。 ④_____ puts me at an advantage over other students. 精通英语使我比其他学生更有优势。 ⑤Seeing a lot of the world in one’s youth (be) a good thing. ⑥Hearing how others react to the book you have just read _____(create) an added pleasure. is viewed／has been viewed being bringing too many people to the remote place Having a good command of English is creates Step IV Presentation Fill in the blanks and analyse the structure. ①Actually, I understand it’s very painful, but it’s no use _____(get) upset about it all day long. 事实上, 我知道这很痛苦, 但整日为它难过是没有用的。 ②Most of us think it is a waste of time _____(persuade) such a person to join us. 我们大多数人认为说服这样的一个人加入我们是浪费时间。 ③It is worthwhile _____(wander) in this beautiful valley and admiring its splendid waterfall. 在这个美丽的山谷里漫步并且欣赏它壮丽的瀑布是值得的。 Summary: it于某些句型中可以作_____代替动词-ing形式时。 getting persuading wandering 形式主语 Step V Summary 用it作形式主语代替动词-ing形式的常用句型: 1. It is＋adj.＋doing sth. 2. It is＋n.＋doing sth. 3. It is no＋n.＋doing sth. 4. There's no sense in doing…做……没有用/没有意义。 It is/feels funny doing sth. 做某事(感觉)很有趣。 It is useless doing sth. 做某事无用。 It is worthwhile doing sth. 做某事是值得的。 It’s a waste of time doing sth. 做某事是浪费时间。 It’s no good/no u ... ...
