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,*,*,*,Noun clauses as,the subject,Unit 4 Grammar,主语从句,1,QUIZ,课前小测,2,1._ watch was lost is unknown.,2._ you did is right.,3._ we will go for an outing,tomorrow remains unknown.,4._ we need is time.,5._ will be our monitor hasnt been decided yet.,whether what who whose whatever,Use the words below to fill in the blanks.,Whether,What,Whatever,Whose,Who,3,上面的空大家都填对了吗?,上面每个句子的主语,大家能找到吗？同时思考这些主语有什么特别之处?,4,1.,Whose,watch was lost,is unknown.,2.,Whatever,you did,is right.,3.,Whether,we will go for an outing,tomorrow,remains unknown.,4.,What,we need,is time.,5.,Who,will be our monitor,hasnt been,decided yet.,5,Find out the subject 主语在哪里？,1.The sky in the countryside seems quite blue.,2.Flying in my own house is my dream.,3.To apologize to his parents was a terrible thing for him.,4.What I have got is all here.,6,1.,The sky,名词做主语,in the countryside,状,seems quite blue.,2.,Flying in my own house,分词做主语,is my dream.,3.,To apologize to his parents,不定式作主语,was a terrible thing for him.,4.,What I have got,句子作主语,is all here.,总结：句子中的主语除了名词、代词,还包括不定式、分词甚至句子都可以充当。,“,是句子必有主谓 有主谓必成句子,”,7,主语从句,(Subject Clause),如果一个句子在复合句中充当一个主语,那么这个句子就是,主语从句,。,That he finished writing the composition in such a short time,surprised us all.,What we need,are good doctors.,Whom we must study for,is a question,of great importance.,8,连接词连词,不充当句子成分 只起连接作用 不可省略,That,That the earth moves around the sun,is well known.,Whether(是否),Whether he will come or not,is not,known yet.,9,what,What you need,is more practice.,which,Which one is the best,is not clear.,连接词代词,充当句子基本成分 且有实际意义 不可省略,Who,Who will go,makes no difference.,whoever whatever whichever,10,when,where,Where he has gone,is a question.,When the show will be on,isnt known.,why,how,Why there is gravity,is hard to,understand.,How he can earn a living in Britain,remains a big problem.,连接词副词,充当句子状语成分 有实际意义 不可省略,11,8.whoever、whatever、whichever可引,导主语从句。,Whoever comes,will be welcome.,Whatever he did,was right.,Whichever of you comes in,will receive,a prize.,12,引导主语从句连词有that,whether,who,what,whatever等。,2.连词位于句首,不能,省略。,3.主语从句大多数情况下,视为第三,人称单数,但在关系代词what引导,的主语从句后谓语动词的数要,根,据句意而定。,小结,13,为了防止句子头重脚轻,通常把形式主语,it,放在主语位置,真正主语后置。,1.It is certain,that he will win the match,.,2.It is true,that he has made a very,important discovery in chemistry,.,3.It is very likely,that they will hold a,meeting,.,14,以that 引出的主语从句,常以形式,主语it引导,结构为:It is+形容词/,名词/某些动词ed+that 从句。,2.在有些that从句中要用虚拟语气,(should+do/should+have done)。,延伸与了解,15,whether与if均为“是否”,但下列情况下只用whether：,1.引导主语从句并在句首,Whether he will come,is not clear.,2.引导表语从句,The question is,whether hell come,.,16,3.whether从句作介词宾语,Im not sure about,whether well,win.,4.引导让步状语从句时,Whether you like it,or not,youll,have to do it.,17,1.主语从句位于句首时必须由连接词,引导。,2.主语从句后置时引导词that可省略。,3.主语从句位于句首时,不能用if 引导。,4.主语从句后置时,可以用if引导。,注意事项,18,What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.,It was not immediately obvious that water was fundamental to the development of life.,How they suddenly disappeared still remains a mystery.,Whether life will continue on the earth for,millions of years to come will depend on,whether this problem can be solved.,Find out the subject in the following sentences,19,What it was to become,was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.,It,was not immediately obvious,that water was fundamental to the development of life.,How they suddenly disappeared,still remains a mystery.,Whether life will continue on the earth for millions of years to come,will depend on whether this problem can be solved.,Find out the subject in the following sentences,20,1._makes this shop different is,that it offers more personal,services.,A.What,B.Who,C.Whatever,D.Whoever,练习,21,2.These wild flowers are so special I would do_ I can to save them.,A.whatever,B.that,C.which,D.whichever,22,3._in the regulations that you,should not tell people the passport,of your e-mail account.,A.What it required,B.What requires,C.It is required,D.It requires,23,4.It is pretty well understood _,controls the flow of carbon dioxide,in and out of the atmosphere today.,A.that B.when,C.what D.how,24,5._ made the school proud was,_ more than 90%of the,students had been admitted to,key universities.,A.What;because,B.What;that,C.That;what,D.That;because,25,6.It now appears _ they are in need of help.,A.that B.which,C.what D.how,26,7._ knows the truth will tell you about it.A.Who that B.Whoever C.Whom that D.That who,27,8.It is good news _ they will,arrive in a few days.,A.which B.what,C.that D.how,28,Translation,他出生在何地还不知道。,2.谁会赢得比赛还不知道。,3.谁来都欢迎。,4.那个人为什么被谋杀尚不知道。,Where he was born,has not been found.,Why the person was murdered,is still unknown.,Who will win the match,is still unknown.,Whoever comes,is welcome.,29,Homework,Review what we have learned in class by referring to the explanation on Page 92.,Finish the exercise 2 on Page 29.,30,