Unit 3 Fascinating parks Discovering Useful Structures 语法课件-2023-2024学年高中英语人教版（2019）选择性必修第一册

Period 3 Discovering Useful Structures 动词-ing作主语 一、动词-ing的时态和语态 1. 主动语态： 一般式：doing 完成式：having done 2. 被动语态： 一般式：being done 完成式：having been done 1. 一般式 (主动语态) Climbing mountains is really difficult for the old. (被动语态) Being asked to do so much homework made him unhappy. 2. 完成式 (主动语态) Having traveled to that beautiful city has made him want to travel there again. (被动语态) Having been reminded to mind table manners, he still behaved badly. 3. 否定式 I am sorry for not finishing my task on time. 二、动词-ing作主语 [1] Reading aloud is a good way to learn a language. [2] Wasting a person’s time is the same as killing him for his property. [3] Being admitted to a key university made him quite thrilled. [4] Being misunderstood by my teacher made me depressed. 三、动词-ing作主语时的位置 [1] Being emotionally intelligent does not necessarily make one a moral person. [2] It is a waste of time persuading such a person to join us. [3] It’s no use complaining without taking action. 动词-ing形式作主语时，通常有两种位置： [1] 位于句首 [2] it 作形式主语，而将动词-ing形式后置 用it 作形式主语的常见句型有： [1] It’s a waste of time doing sth. 做某事是浪费时间的 [2] It’s worth/worthwhile doing sth. 做某事是值得的 [3] It’s no good/use/fun/pleasure doing sth. 做某事无益/没用/没意思 四、动词-ing的复合结构作主语 [1] His son’s winning first prize made him quite proud. [2] His coming made me quite delighted. 名词所有格/形容词性物主代词+动词-ing形式 五、特殊句型 [1] There is no denying that the environment is from bad to worse. [2] There is no joking about such matters. 当句型“There is no…”表示“不允许/禁止某种行为的发生或存在”时，需用动词-ing作主语。 六、单句写作 (动词-ing形式作主语) 1. 许多学生在即将到来的高考前的焦虑使家长和老师都非常担心。 Many students’ being anxious before the upcoming college entrance examination makes both parents and teachers extremely concerned. 2. 不可否认的是经常锻炼和保持均衡的饮食对我们的健康非常有益处。 There is no denying that exercing regularly and keeping a balanced diet are of great benefit to our health. 3. 在森林里迷路使简后悔与她的丈夫吵架。 Being lost in the forest made Iane regret quarrelling with her husband. 4. 和伯纳德一起制作爆米花是帮助他摆脱困境的好办法。 Making popcorn together with B