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课件网) Unit 3 Fascinating parks 新人教版选择性必修 Book 1 Discovering Useful Structures P29 动词的-ing形式作主语 动词-ing形式作主语的基本用法 (1)表示经常性、习惯性的动作，谓语动词通常用_____形式。 Getting here _____ (be) quite difficult. Being in such a beautiful and wild place _____(make) me feel blessed to be alive. Listening to the English tapes and watching English films _____ (be) good ways to learn English. 单个的动名词（短语）作主语时谓语动词用____；两个或多个动名词（短语）并列作主语时，如果是两件事,谓语动词用_____。 单数 is makes are 单数 复数 (2)it在句首作形式主语，动词-ing形式后置作真正的主语。 Playing computer games is a waste of time. It is a waste of time playing computer games. it作形式主语代替动词-ing形式的常用句型: It’s a waste of time/money doing sth. 做某事是浪费时间/金钱。 ② It’s no good/no use/no fun doing sth. 做某事没好处/没用/没意思。 ③ It is useless doing sth. 做某事无用。 ④ It is worthwhile doing sth. 做某事是值得的。 (3)“There is + no”后可用-ing形式作主语，表示“没法…; 不允许…” There is no doing sth. (该句型一般指无法或不被允许。) 常见句型： There is no denying... 不可否认的是...... 即学即用 1. 说服他加入我们就是在浪费时间。 2. 在这儿等是没用的, 我们走吧。 3. 在教育上花钱是值得的。 4. 和不诚实的人交朋友是没有好处的。 It's a waste of time _____(persuade) him to join us. It’s no use _____(wait) here. Let’s go. It is worthwhile _____(spend) money on education. There is no good _____ （make）friends with the dishonest men. persuading waiting spending making 动词-ing形式的复合结构 动词-ing形式的复合结构有四种形式： 形容词性物主代词+动词-ing Her coming to help ancouraged all of us. 名词所有格+动词-ing Tom’s joining us added colour to our activity. 代词宾格+动词-ing 名词+动词-ing 动词-ing形式的否定形式 动词-ing形式的否定形式通常是在其前加not; 带有逻辑主语时,not应放在逻辑主语和动词-ing形式之间。 Not knowing what to do next made him much more embarrassed. 不知道下一步该做什么使他更加尴尬。 Her not passing the exam brought her much unhappiness. 她考试不及格给她带来了许多不愉快。 动词-ing形式的时态和语态 语态 时态 主动语态 被动语态 一般式 完成式 doing being done having done having been done _____ is really difficult for the old. 对于老人来说，爬山非常困难。 _____ （ask）to do so much homework made him unhappy. 被要求做这么多家庭作业使他不高兴。 _____ (travel) to that beautiful city has made him want to travel there again. 曾经去那美丽的城市旅游使他再想去那旅游一次。 _____ (bite) 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。 Climbing mountains Being asked Having traveled Having been bitten 动词-ing与动词不定式作主语的区别 动词-ing作主语，常常表示习惯性或经常性的动作。 而不定式一般表示一次性、具体性的行为。 _____ (deliver)newspapers is his job. 送报纸是他的工作。 _____ (deliver)newspapers is his job today. 送报纸是他今天的工作 Delivering To deliver ... ...
