英语：Unit_4《Astronomy_the_science_of_the_stars》课件-Grammar(新人教版必修3).ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 4 Astronomy:,the science of the stars,Grammar:,The subject clause,Grammar,What part does the underlined part serve as in each sentence?,A tree,has fallen across the road.,You,are a student.,To find your way,can be a problem.,Smoking,is bad for you.,“,How do you do?”,is a greeting.,What she said,is not yet known.,That we shall be late,is certain.,It,is certain that we shall be late.,We can see from these sentences that a sentence serves as,subject,so we call it,Subject Clause,.,What,shedid,isnotyetknown.,Whoever,comes,iswelcome.,Whichever,you want,is yours.,When,he will be back,depends on the weather.,Where,we live,doesnt matter.,How,the pyramids were built,was still a mystery.,That,price will go up,is certain.,That,they are badly in need of help,is quite clear.,Whether,they will sell the house,is not yet decided.,引导主语从句的连接词有：,连词,that,whether,；,连接代词,who,whoever,what,whatever,和,which,；,连接副词,when,whenever,where,how,和,why,。,Please do Ex1 on P27(Ex book A),注意,:,有时为了使句子结构平衡,避免,“,头重脚轻,”,常用,it,作形式主语,而把从句放在后面。例如,:,It,is a pity that she has made such a mistake.,她犯了这样一个错误,真是遗憾。,Can you rewrite the following sentences.,1.That the earth turns around the sun,is known to all.,2.,That price will go up,is certain.,3.,That they are badly in need of help,is quite clear.,It is known to all,that the earth turns around the sun.,It is certain,that price will go up,.,It is quite clear,that they are badly in,need of help.,这样就构成了下面一些常用句型,:,1)It is+adj./n.+,从句,It is a pity/shame that.,遗憾的是,It is possible that.,很可能,It is unlikely that.,不可能,2)It+,不及物动词,+,从句,It seems/appears that.,似乎,It happened that.,碰巧,3)It+be+,过去分词,+,从句,It is said that.,据说,It is known to all that.,众所周知,It is reported that.,据报道,It is believed that.,据信,;,人们相信,It is suggested that.,有人建议,It must be pointed out that.,必须指出,It has been proved that.,已证明,.,如,:,It is believed that,at least a score of buildings were damaged or destroyed.,据信,至少有二十座楼房遭到破坏或彻底毁掉。,It has been decided that,the exhibition,will not open on Sundays.,1.Where shall we spend the holiday isnt decided.,2.Your have made a mistake is a fact.,3.That is certain that we can win.,4.No matter who leaves the room last ought to,turn off the lights.,5.It is important that a student learns a foreign language.,we shall,That you have,It is,Whoever,should learn,改错练习,Ex.on P29(,ExbooKA,),5).,用于,It is important/natural/necessary/impossible that.,句型中,主语从句应使用虚拟语气,谓语动词用,“,should+,动词原形,”,的形式,should,有时有感情色彩。,1._ you dont like him is none of my business.,2._ he said at the meeting astonished everybody present,3._ the 2000 Olympic Games will be held in Beijing is not known yet.,4._ well go camping tomorrow depends on the weather.,5._ leaves the room last ought to turn off the lights.,That,What,Whether,Whether,Whoever,6._ is a fact that English is being accepted as an international language.,7.It worried her a bit _ her hair was turning grey.,8.The Foreign Minister said,“_ is our hope that the two sides will work towards peace.”9.After Yang,Liwei,succeeded in circling the earth,_ our astronauts desire to do is walk in space.,It,that,It,what,