1、Key point 1:-ing形式作主语的基本概念形式作主语的基本概念 Key point 2:-ing形式作主语常用句型形式作主语常用句型 Key point 3:-ing形式形式作主语的逻辑主语作主语的逻辑主语 Key point 4:-ing形式形式作主语和to do 作主语的区别 ContentsContentsKey point 5:-ing形式形式做主语的否定Key point 1:-ing形式作主语形式作主语的基本概念的基本概念 钓鱼是我的乐趣。钓鱼是我的乐趣。Fishing is my pleasure.Doing exercise is a good way to lose
2、 weight.Dancing is her hobby.做运动是一个好的减肥方式。做运动是一个好的减肥方式。跳舞是她的爱好。跳舞是她的爱好。1.作主语作主语,且通常放在且通常放在_。2.谓语动词用谓语动词用 。3.动词动词-ing形式作主语常用来表示形式作主语常用来表示_的动作。的动作。4.被动形式为被动形式为being done。eg：Being praised by his teachers made him regain the confidence.被老师表扬使他重获自信。被老师表扬使他重获自信。动词动词-ing单数单数句首句首经常性或习惯性经常性或习惯性_(be)a clown d
3、octor means I can help people by entertaining them.(U 1)Being_(see)their daughter so much happier has in turn made Laras parents relaxed.Seeing _(play)basketball was his dream.Playing 1._(determine)the origins of COVID-19 should be driven by science and solid facts.2._(go)to bed early and _(get)up e
4、arly is considered to be a good habit.3._(be)able to speak a foreign language gives you a great advantage over others.4._(learn)to think critically is an important skill todays children will need for the future.(2019天津天津)5._(travel)along the old Silk Road is an interesting and rewarding experience.(
5、2018北京北京)6._(ask)by the teacher to leave the classroom made him feel ashamed.DeterminingDeterminingGoingGoinggettinggettingBeingBeingLearningLearningTravellingTravellingBeing askedBeing asked1.Underline the right forms of verb.1）Walking is/are a good form of exercise for both young and old.2）Watchin
6、g news on TV have/has become a routine for me.3）Going to Hangzhou by train takes/take about 16 hours.4）Asking a womans age are/is impolite in our country.Exercise 2Exercise 2Key point 2:-ing形式作主语形式作主语常用句型常用句型 2.位置：动词-ing形式作主语时，可位于句首或句末，位于句末时要用it作形式主语。It 作形式主语，主要用在句型It is+表示否定的形容词(-less)或名词(no good,n
7、o use,a waste of time,fun)中。如：It is no use _(tell)him not to worry.Its useless _(study)English without practice.Its a waste of time _(talk)about that.Its fun _(breath)in fresh air in the morning mountains.注意：important，essential，necessary 等形容词不能用于上述结构。tellingstudyingtalkingbreathing1.Its a waste of t
8、ime doing sth.做某事是浪费时间的做某事是浪费时间的2.Its useless/worthwhile doing sth.做某事是没用做某事是没用/值得的值得的3.Its no good/use/fun doing sth 做做某事是没好处某事是没好处/没用没用/没意思没意思常用常用-i ing形式作主语的句型有：形式作主语的句型有：1.Its a waste of time talking about such a useless thing.谈论这样无用的事情简直是浪费时间。谈论这样无用的事情简直是浪费时间。2.Its dangerous swimming in the sea
9、 on windy days.有风的天气在海里游泳是危险的。有风的天气在海里游泳是危险的。3.It is worthwhile discussing the question.这个问题值得讨论。这个问题值得讨论。Exercise 1 TranslationExercise 1 Translation5)做出努力是值得的。做出努力是值得的。6)和夏洛克争辩是没有什么用的。和夏洛克争辩是没有什么用的。_ with Shylock7)跟你在一起工作是令人愉快的。跟你在一起工作是令人愉快的。_8)玩电子游戏是浪费时间。玩电子游戏是浪费时间。Its a waste of time _.It is use
10、less arguingIt is a pleasure working with youplaying computer games.Its worth making the effortKey point 3:-ing形式形式作主语的作主语的逻辑主语逻辑主语 用动词用动词-ing作主语的逻辑主语把下列句子整合成一句：作主语的逻辑主语把下列句子整合成一句：My deskmate was ill.It made me worried.My deskmates being ill made me worried.1.名词（有生命的名词）名词（有生命的名词）s+doing2.形容词性物主代词形容词
11、性物主代词+doing-ing-ing 作主语时的逻辑主语常用的两种形式作主语时的逻辑主语常用的两种形式His being ill made me worried.逻辑主语：动词-ing形式作主语时，如果要突出动作的执行者，要在其前面加上所表动作的逻辑主语，这就构成了动词-ing形式的复合结构。1._to the meeting surprised all of the managers.A.Mike coming B.Mike came C.Mike coming D.Mikes coming 2.Its no use _ that you didnt know the rules.A.yo
12、u pretend B.you pretending C.your pretending D.your pretend Exercise 1 Multiple choicesExercise 1 Multiple choicesKey point 4:-ing 作主语和to do 作主语的区别Playing with fire is dangerous.玩火危险。玩火危险。(泛指泛指)Be careful！To play with fire will be dangerous.小心点！玩火会带来危险。小心点！玩火会带来危险。(指一具体动作指一具体动作)动词动词-ing-ing形式作主语表示形式
13、作主语表示泛指的行为或者抽象的泛指的行为或者抽象的概念概念，不定式作主语表示，不定式作主语表示具体或一次性具体或一次性的动作。的动作。Key point 5:-ing形式做主语的否定1.感觉不饿使很多学生不吃早餐。感觉不饿使很多学生不吃早餐。_(feel)hungry in early morning makes some students skip breakfast.Not feeling 2.没有意识到我的一个孩子生病了是我最大错误。没有意识到我的一个孩子生病了是我最大错误。_(realize)one of my kids is sick is my biggest mistake.No
14、t realizing-ing-ing做主语的否定：做主语的否定：Not-ingNot-ing2.上班不准时是他失去升职机会的原因。上班不准时是他失去升职机会的原因。_(be on time)was the reason why he failed in the promotion.Not being on timeKey point 1:the conception and rules：1._作主语,且通常放在_。2.谓语动词用 。3.动词-ing形式作主语常用来表_的动作。Key point 2:-ing形式作主语常用句型：1.Its a waste of time doing sth.2
15、.Its useless/worthwhile doing sth.3.Its no good/use/fun doing sth Key point 3:-ing 作主语的逻辑主语作主语的逻辑主语名词（有生命的名词)s/形容词性物主代词+doing(peters/His doing)Key point 4:-ing 作主语和to do 作主语的区别动词ing形式作主语表示泛指的行为或者抽象的概念，不定式作主语表示具体或一次性的动作。动词动词-ing单数单数句首句首经常性或习惯性经常性或习惯性SummarySummaryKey point 5:-ing做主语的否定：Not+-ing wear
16、let miss make use 4P29 Using LanguageComplete the voicemail messages with the correct form of do and play.Hi Ellen,its Todd here.Ive just finished my first day volunteering at the Senior Citzens Sport Club!Its made me see life as an older person with fresh eyes!Some members like to _yoga because it
17、helps them keep their musles toned,while others love to _aerobics-one elderly man says the energy of it makes him feel young again!Ball games are also popular.Many enjoy _table tennis or_bowling,while there were lots of people _badminton,and many like to _ golf.I even encuntered a man who,at the age
18、 of 68,was brave enough to _ roller skating!Not only did he have guts,he was much faster than me!NoImagedodoplayingplayingplayingplaydoUsing LanguageI must say,it was really inspiring to see the people there_ sports,even at such advanced ages.It made me think aoout going to the Central Stadium this Saturday.The sports club there doesnt ask for membership.We can _tennis or _ rock climbing.It would do us a lot more good than _ computer games.doingplaydoplaying
