人教版英语必修四ppt课件：Unit+2+Working+the+land语法专题课.ppt

,The usages of the-ing form,感 受 新 知,Find sentences in this reading passage containing the-ing form.Read these sentences and analyze them.,1.Finding ways to grow more rice has been his life goal.2.He saw the great need for increasing the rice output.3.Yuan Longping searched for a way to increase rice harvests without expanding the area of the fields.,the-ing form as subject,the-ing form as object,the-ing form as object,4.He doesnt care about being famous.5.Spending money on himself or leading a comfortable life also means very little to him.6.Just dreaming for things,however,cost nothing.7.He awoke from his dream with the hope of producing a kind of rice that could feed more people.,the-ing form as object,the-ing form as subject,the-ing form as subject,the-ing form as object,The-ing form as the Subject and Object,1作主语（1）动词-ing形式直接置于句首主语的位置上。捉弄别人是我们万万不能做的._is something we should never do学习新单词对我来说非常重要。_is very important for me,Playing tricks on others,Learning new words,（2）用形式主语it，把真正的主语动词-ing形式移置句尾。但这种句子形式有一定的限制，作表语的只能是某些形容词或少数名词，如useful,useless,good,fun,no use,worth等。和他争辩是没有什么用的。_ is useless _跟你在一起工作是令人愉快的事。_is pleasant _,It trying to argue with him,It working with you,归纳：常用动词-ing形式作主语的句型有：It+be+a waste of time doing 做是浪费时间的。It is/was worth/worthwhile doing做是值得的。There is no sense in doing 做没有道理。There is/was no point doing 干无意义。,2、作宾语动词-ing形式作宾语有两种情况：一是有些动词只能后接动词-ing形式作宾语；二是有些动词后既可接动词-ing形式也可接不定式形式作宾语。(1)只能后接动词-ing形式作宾语的动词，常见的有avoid，consider，enjoy，keep，finish，suggest，dislike，risk,delay，escape，cannot help，imagine，mind，miss，practice，cannot stand,put off,give up等。,你是否考虑过找一位挚友?Have you _one special friend?晚饭后你想和我一起散步吗?Do you _with me after supper?,considered looking for,feel like having a walk,(2)既可接动词-ing形式又可接不定式形式作宾语的动词，常见的有：begin，start，continue，like，love，prefer，try，mean，forget，remember，hate等。,在动词forget，remember，regret之后，用动词-ing形式与不定式形式意义不同。动词-ing形式表示动作先于谓语发生，不定式形式表示后于谓语动作。我记得我已把信寄了。I remember _我会记着去寄信的。Ill remember _我真后悔没赶上那次报告会。I regret _我遗憾地告诉你，我不能接受你的建议。I regret _I cant take your advice,posting the letter,to post the letter,missing the report,to say,在try，mean之后，意义各不相同，如try to do(设法)，try doing(试着)，mean to do(打算，有意要做)，mean doing(意思是，意味着)。我并不想让你生气。I didnt mean _你的计划意味着要花费几个小时。Your plan would mean _,to make you angry,spending hours,go on doing 和go on to dogo on doing继续做一直在做的事；go on to do接着做另外一件事。请接着做这同一个练习。Please go on _the same exercise请做另外一个练习。Please go on _the other exercise,doing,to do,3作介词宾语动词-ing形式可与介词一起构成介词短语（1）介词+动词-ing形式，我向你道歉，刚才对你那样生气。I apologize _with you.（2）动词+介词+动词-ing形式，我坚持为这次出行带足需要的食物。I insist_ for this expedition,for being so angry,on taking proper food,下列短语中的to都是介词，所以后面跟名词或动词-ing形式：devote to，object to，pay attention to，get down to，lead to,look forward to，stick to，be used to等。,巩 固 运 用,.翻译句子1.与他争论就是浪费时间。_2.做这件傻事毫无意义。_3.他们脸上没有笑容，相反都做了鬼脸。_,It is a waste of time arguing with him.,There is no point doing such a silly thing.,Instead of smiling,each of them made a face,4.我们得想些办法改变人们的习惯。_5.人们忍不住嘲笑那个愚蠢的人。_,Weve got to think of ways of changing peoples habits.,People couldnt help laughing at that foolish man,.单项填空1.Mark often attempts to escape _ whenever he breaks traffic regulations.having been fined B.to have been fined C.to be fined D.being fined2.I really appreciate _ to help me,but I am sure that I can manage by myself.you to offer B.that you offer C.your offering D.that you are offering3.The thief took away the womans wallet without_.being seen B.seeing C.him seeing D.seeing him,D,C,A,4.No one can avoid _ by advertisements.to be influenced B.being influenced C.influencing D.having influenced5.They are considering _ before the prices go up.A.of buying the house B.with buying the house C.buying the house D.to buy the house6.If I had remembered _ the door,the things would not have been stolen.to lock B.locking C.to have locked D.having locked7.My transistor radio isnt working.It _.A.need repairing B.needs to repair C.needs repairing D.need to be repaired,B,C,A,C,8.It is no use _ me not to worry.you tell B.your telling C.for you to have told D.having told9.He is very busy _ his papers.He is far too busy _ callers.A.to write;to receive B.writing;to receiveC.writing;receiving D.to write;for receiving10.The suspect at last admitted _ stolen goods but denied _ them.receiving;selling to receive;to sellC.to receiving;to selling D.to have received;to have sold,B,B,A,