1、动词ing形式作主语一、关于动词ing形式的基本情况1动词ing形式是动词的一种非谓语形式，包括现在分词和动名词两种。动词ing形式在句中的语法作用：动名词在句中作主语、宾语、表语和定语，现在分词在句中作状语、宾语补足语和定语。2动词ing形式的时态和语态。观察例句Reading aloud is a good way to learn a language.大声朗读是学习语言的一种好方法。Having studied his lessons very hard, he passed the exam.努力学习了功课， 他通过了考试。The building being built now w
2、ill be finished next month.正在建设的建筑物下个月将完工。Having been laughed at for his lameness, the boy became shy and inhibited.那男孩因跛脚被人讥笑， 变得羞怯。归纳用法语态时态主动语态被动语态一般式doingbeing done完成式having donehaving been done二、动词ing形式作主语1动词ing形式作主语观察例句Saying is one thing, and doing is another.说是一回事，而做是另一回事。Having a walk every
3、day helps to make one keep healthy.每天散步有助于一个人保持健康。归纳用法动词ing形式作主语，往往表示经常性、习惯性的动作，通常置于句首。名师点津动名词作主语时，谓语动词用单数。Climbing mountains is really difficult for the old.对于老人来说爬山确实困难。2形式主语it代替动词ing形式作主语。观察例句It is a waste of time persuading such a person to join us.劝说这种人加入我们是浪费时间。It is no good/use regretting for
4、 the past.悔恨过去是没用的。Its useless arguing with them.跟他们争论是徒劳无益的。归纳用法此类句式常见的有：Its a waste of time doing sth.做某事是浪费时间Its useless/worthwhile doing sth.做某事没用/是值得的Its no good/use/fun doing sth.做某事没好处/没用/没意思3动词ing形式和to do作主语时的区别。观察例句Playing with fire is dangerous.玩火危险。(泛指)Singing is my hobby, and to sing at
5、my friends birthday party is my dream.唱歌是我的爱好，在朋友的生日宴会上唱歌是我的梦想。归纳用法动词ing形式和to do都可以作主语。动词ing形式作主语表示比较抽象的一般行为，to do作主语往往表示具体的或一次性的动作。即学即练1单句语法填空I cant stand working(work)with Jane in the same office.Its no use complaining (complain)without taking action.(2019全国卷)Volunteering (volunteer)just feels so
6、good.Being invited (invite)to the party was a great honour to the family.三、动词ing的复合结构作主语观察例句His/Toms being late made the teacher very angry.他的/汤姆的迟到使老师很生气。Jerrys not arriving on time made the people present angry.杰里未能按时到达令在场的人很生气。归纳用法(1)作主语的动词ing的复合结构的肯定形式为：形容词性物主代词/名词的所有格doing.。(2)作主语的动词ing的复合结构的否定
7、形式为：形容词性物主代词/名词的所有格not doing.。即学即练2完成句子他没准时到达火车站使得我们大家都很担心。His not getting to the station on time made all of us worried.你学好英语对学习法语有帮助。Your learning English well will help to learn French.单句语法填空1Talking (talk)with your kid heart to heart is very important.2It is no use regretting (regret)your past m
8、istakes.3Wesleys returning (return)so soon surprised me.4Seeing is (be)believing.5It is no good crying(cry)over spilt milk.6Their coming(come)to help was a great encouragement to us.7His not knowing(know)English brought him a lot of inconvenience.8Reading(read)in bed is bad for your eyes.完成句子1对于初学者来
9、说，学习驾驶通常是一次紧张的经历。Learning to drive is usually a nervous experience for beginners.2总之，和你的同学处理好关系被认为是一件重要的事情。In a word, getting along well with your classmates is considered an important thing.3在这种工作条件下工作不是一件愉快的事而是一件痛苦的事。Working in these conditions is not a pleasure but a suffer.4躺着晒太阳是很舒服的。It is pleasant lying in the sun5和孩子们一起玩真好。It is fun playing with children