1、Unit 3 Faster, higher, stronger Period2 Using language知识点梳理单元语法精讲精练v.-ing作主语I.语法感知感知以下课文原句，补全方框下的小题1Knowing where the ball would go wasnt easy.2In this way，practising day in and day out helped Stephen sharpen his skills.3Playing basketball was his dream.动名词作主语往往表示经常性、习惯性的动作，谓语动词用单数。在句1, 2,3中都是动名词作主语
2、。II.语法精析动名词作主语一、动名词作主语往往表示一种概念、习惯或经验，谓语动词用单数。Working in these conditions is not a pleasure but a suffering.在这种条件下工作不是一件愉快的事而是一件痛苦的事。二、动名词作主语有如下几种常见情况：1直接位于句首作主语。例如：Swimming is a good sport in summer.在夏天游泳是好的运动。2用 it 作形式主语，把动名词(真实主语)置于句尾。It is no good spending too much time on the Internet.在网上花太多时间是没
3、有好处的。常见的动名词(短语)作主语的句型：Its no good doing sth.做某事是没有好处的。Its no use doing sth.做某事是没有用处的。Its a waste of time doing sth.做某事是浪费时间。常见的能用于这种结构的形容词还有：nice，better，wonderful，enjoyable，interesting，foolish，difficult，useful，useless，worthwhile等。注意：important，essential，necessary 等形容词不能用于上述结构。3用于布告形式的省略结构中。No smoking
4、. No smoking is allowed (here )禁止吸烟。4动名词的复合结构作主语当动名词有自己的逻辑主语时，常可以在其前面加上形容词性物主代词或名词所有格形式，构成动名词的复合结构。这时，名词或代词的所有格作动名词的逻辑主语。动名词的复合结构也可以在句中作主语。例如：Their coming to help was a great encouragement to us.他们来帮助我们对我们是个很大的鼓励。三、动名词作主语与动词不定式作主语的比较动词不定式和动名词都可以用作主语。在意义上相近。但动名词多用来表示一般的、泛指的或抽象的动作，强调的是事情本身。而不定式多用来表示具体
5、的某一次行为或将来的动作，强调的是动作本身，不过有时二者之间区别很小。比较：Collecting stamps can enlarge ones knowledge.集邮可以扩大知识面。To visit China is my next goal.去中国旅游是我的下一个目标。III.高考链接A.单句语法填空1_(walk) every day does good to your health.2Its a waste of time _(play) video games every day.3_(watch) too much TV does harm to our eyes.4It is
6、no use _(reason) with such a stubborn person.5It is very important for us _(focus) on our lessons.6_(finish) this job in one day is impossible.7_(listen) to soft music will make you relaxed.8It is necessary for us _(form) a good habit when were young.9Her _(lose) her new bike really made her mother
7、very angry.10There is no _(deny) that China will protect its own interests.11_(play) with such lovely children is very interesting.12It is important for the man _(obtain) a lot of knowledge.13Working with so selfish a person _(be) a terrible thing.14_(take) apart the old toys is the boys habit.答案：1.
8、 Walking 2.playing 3.Watching 4.reasoning 5.to focus 6.To finish 7.Listening8.to form 9.losing 10.denying 11.Playing 12.to obtain 13.is 14.TakingB.完成句子1 _helps make one healthy.每天早晨做运动有助于人的健康。 2 _is very difficult.自学英语是很难的。3_ will make you exhausted.爬上这座山会使你筋疲力尽。4_ in the morning will do you a lot o
9、f good.早晨大声朗读英文对你有很大的好处。5For him_is not easy.要他承认错误是不容易的。6It is useless _.试图和这样一个固执的人争论是没有用的。7It is natural for a mother_.一位母亲担心所有的孩子是很正常的事情。答案：1.Taking exercise every morning2.Learning English all by yourself3.Climbing up the mountain4.Reading English aloud5. to admit his mistakes 6.trying to argue
10、 with such a stubborn person7. to worry about all her childrenC.单句写作1人们为钱而结婚是错误的。(marry)_2暴露在阳光下太久对你的皮肤有害。(expose)_3回复邮件是我每天的工作。(answer)_4一般来说，了解自己是很难的。(know)_5在电脑前面久坐是没有好处的。(sit)_6是那个年轻人欺骗他放弃了计划。(cheat)_7上周文坛突然冒出了一位有才华的年轻人。(burst onto)_8老师给每个儿童布置了不同的任务。(assign)_9他是唯一到达山顶的人。(the only.to do.)_10是司机的粗
11、心导致了这次可怕的事故。(contribute to)_答案：1.It is wrong for people to marry for money.2.Being exposed to the sun too long does harm to your skin.3.Answering emails is my work every day.4.Generally speaking，knowing oneself is very hard.5.It is no good sitting in front of a computer for a long time.6.It was the
12、young man that cheated him into giving up his plan.7.A talented young man burst onto the literary scene last week.8.The teacher assigned each of the children a different task./The teacher assigned a different task to each of the children.9.He was the only person to arrive at the top of the mountain.10.It was the drivers carelessness that contributed to the terrible accident.
