英语名词性从句及相应习题.ppt
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1、名词性从句 Noun Clause,名词性从句 noun clause,主语从句subject clause,宾语从句object clause,表语从句predicative clause,同位语从句appositive clause,我的梦想是我能进入一所重点大学。,My dream is that I can enter a key university.,That I can enter a key university is my dream.,I have a dream that I can enter a key university.,I always dream that
2、I can enter a key university.,表语从句,主语从句,同位语从句,宾语从句,请判断出下列的句子属于哪种从句,What I want to do is taking a bath.The news that they won the game spread the whole school.I dont think he is an honest boy.The fact is that he stole the car.Do you know the man who is standing over there?It is said that they won the
3、 game.,(主从),(同位语从句),(宾从),(表从),(定从),(主从),引导名词性从句的关联词,不可省略的连词:1.介词后的连词 2.引导主语从句和同位语从句的连词That she was chosen made us very happy.We heard the news that our team had won.,主语从句,在复合句中作主语的从句.引导词有连词:that,whether;代词:who,what,which;副词:when,where,how,why等.,1.That he is a famous singer is known to us.(It is know
4、n to us that he is a famous singer.),2.When he will go to America is not yet fixed.(It is not yet fixed when he will go to America.),有时为避免句子头重脚轻,常用it 代替主语从句作形式主语放于句首,而把主语从句置于句末。主句的谓语动词一般用单数形式。常用句型如下:,1.It+be+形容词 that从句,It is necessary/important/obvious that,2.It+be+-ed分词 that从句,It is believed that 人
5、们相信It is known to us all that 众所周知It has been decided that 已经决定,3.It+be+名词 that从句,It is common knowledge that 是常识It is a surprise that.令人惊奇的是It is a fact that 事实是,4.It+不及物动词 that从句,It appears that 似乎It happens that 碰巧It occurred to me that 我突然想起,另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时,谓语动词要用 虚拟语气“(should)+d
6、o”,常用的句型有:It is necessary/important/natural/strange that It is suggested/requested/proposed/desired that,It is necessary that she(should)take a couple of days of rest.It is requested that some immediate effort(should)be made.It is suggested that each student(should)sing a song in English.,主语从句中的“主谓一
7、致”:,1.主语从句通常被看作一个整体,因此主句的谓语动词用单数形式.,That they will come _certain.,2.what 引导主语从句时,主句谓语动词的单复数由表语的单复数决定.,What he wants _these books.What he wants _some water.,注意,is,are,is,3.单个的主语从句作主语时,谓语动词用单数形式。如果是两个或两个以上的主语从句作主语,谓语动词则用复数形式。,Where and when he was born has not been found.,When the person was murdered
8、and why he was murdered are still unknown.,1)主语从句用陈述语序,即主语在前,谓语在后.,2)连接词that在从句中起连接作用,不作任何 成分,但不能省略.,When will he come is not known.,X,When he will come is not known.,That he will not come to the meeting this evening is true.,3)whether可引导主语从句 译为“是否”,但if不能.,5)为避免主语冗长、头重脚轻,常用it作形式主语,主语从句放在后面作真正的主语.例:I
9、t is well known/reported/thought/said/that It is clear/necessary/certain/true/doubtful/that It is a pity/a shame/an honour/that,Whether we will visit the Great Wall has not been decided.,It has not been decided whether we will visit the Great Wall.,1_in the regulations that you should not tell other
10、 people the pass word of your e-mail account.(2005上海)A.What is required B.What requires C It is required D.It requires2.The Foreign Minister said,“_ our hope that the two sides will work towards peace.”(2006 北京)A.This B.There is C.That is D.It is3.After Yang Liwei succeeded in circling the earth,_ o
11、ur astronauts desire to do is walk in space.(2004 上海)A.where B.what C.that D.how,Exercises,宾语从句,宾语从句就是在复合句中作宾语的名词性从句,通常放在主句谓语动词(及物动词)或介词之后。,1.She did not know what had happened.,2.Our success depends upon how well we can cooperate with one another.,3.I am afraid(that)Ive made a mistake.,(作动词的宾语),(作介
12、词的宾语),(作形容词的宾语),1.由连接词that引导的宾语从句 由连接词that引导宾语从句时,that在句中不担任任何成分,在口语或非正式的文体中常被省去,但如从句是并列句时,第二个分句前的that不可省。例如:We must never think(that)we are good in everything and that others are good in nothing.,注:在demand,order,suggest,decide,insist,desire,request,command,doubt等表示要求、命令、建议、决定等的动词后,宾语从句用“(should)+动词
13、原形”。I insist that she(should)do her work alone.我坚持要她自己工作。The commander ordered that troops(should)set off at once.司令员命令部队马上出发。,2.用who,whom,which,whose,what,when,where,why,how,whoever,whatever,whichever等关联词引导的宾语从句,注意句子语序要用陈述语序。,I want to know what he has told you.,She always thinks of how she can wor
14、k well.,She will give whoever needs help her sincere support.,3.用whether或if引导的宾语从句 用whether或if引导的宾语从句其主语和谓语的顺序也不能颠倒,仍保持陈述语序。此外,whether与if 在作“是否”的意思讲时在下列情况下一般只能用whether,不用if:,只能用whether不能用if的情况,1.在介词后面:Im thinking of whether we should go fishing.2.在动词不定式前:They asked me whether to sit at the front.,3.
15、当与or not连用,或提出两种选择时:I dont know whether hes free or not.Tell me whether youd like to go shopping or tidy the room.4.宾语从句提前,在句首时:Whether this is true,I cant say.,5.引导表语从句、同位语从句、主语从:Whether he is right or wrong is a question.The question was whether he went there last night.,(4)用if不用whether的情况:,1.引导否定
16、概念的宾语从句时:He asked me if I hadnt finished my homework.2.引导条件状语从句,if意为“如果”时:Well go hiking if it doesnt rain tomorrow.,宾语从句中的“时态呼应”与“否定转移”,若主句谓语动词为think,consider,suppose,believe,expect,fancy,guess,imagine等,其后的宾语从句若含有否定意义,一般要把否定词转移到主句谓语上,例如:,He told me that he _ his job.,时态呼应,否定转移,我认为他不会来这里.,I think he
17、 wont come here.()I dont think he will come here.(),had finished,注意,4.注意宾语从句中的时态呼应,当主句动词是现在时,从句根据句子自身的情况,而使用不同时态。例如:I know(that)he studies English every day.I know(that)he studied English last term.I know(that)he will study English next year.I know(that)he has studied English since 1998.,当主句动词是过去时态(
18、could,would除外),从句则要用相应的过去时态,如一般过去时,过去进行时,过去将来时等;当从句表示的是客观真理,科学原理,自然现象,则从句仍用现在时态。例如:,The teacher told us that Tom had left us for America,doubt用于肯定结构时,后面用whether/if 引导名词性从句;用于否定结构或疑问结构时,后面用 that 引导名词性从句。be sure用于肯定句或疑问句时,后接 that 引导的名词性从句;用于否定句时,后接whether/if 引导的名词性从句。,We doubt=I am not sure whether/if
19、 he can win the game.,I dont doubt=I am sure that he will win the game.,宾语从句中用it作形式宾语,We think it our duty that we should help others.,如果主句中有形容词或名词作宾语补足语时,一般用it来作形式宾语,把从句放在宾补后面。,I find it impossible that he can finish the work in two days.,1.He has made _clear _he will not give in.2.They took_ for g
20、ranted _ you knew the fact.,it,that,it,that,3.He is a good student except _he is careless.4.I know nothing about him except_you told me.5.He usually walks to school except_ it rains.,what,when,that,表语从句,在复合句中作主句的表语.引导表语从句的关联词与引导主语从句的关联词大致一样,1.问题是我们和他已失去联系.2.这就是亨利怎么解决这个问题的.3.天看起来要下雨了.,The problem is_
21、,This is_.,It looks_.,that we have lost touch with him.,how Henry solved the problem,as if it is going to rain,1.This is _our problem lies.2.Tomorrow is _ it would be the most convenient.3.The reason _ he didnt come is_ he was ill.4.He was ill.I think that is _he didnt come.5.The question is _ he wi
22、ll be here on time.,where,when,why,that,why,whether,同位语从句,同位语从句在句中起同位语的作用.一般放在名词fact,news,idea,promise,thought,suggestion,belief,truth 等之后,用以说明或解释前面的名词.引导词 that不能省;少数情况下也可用连接副词.,同位语从句修饰的名词fact,news,idea,promise,faith,question,problem,doubt,fear,hope,order,belief,thought,reply,truth,suggestion,advice
23、,proposal,1.The thought that we might succeed excited us.2.The idea that they should try a second time is worth considering.3.The suggestion that the plan(should)be delayed will be discussed tomorrow.4.I have no idea when he will be back.,一、同位语从句与定语从句相似之处,1、两种从句都可以译成定语,The news that our team has won
24、 the final match is encouraging.(同位语从句)我们队取得决赛胜利的消息令人鼓舞。The news that you told us is really encouraging.(定语从句)你告诉我们的消息真的令人鼓舞。,2、两种从句都可以用that引导,The suggestion that students should learn something practical is worth considering.(同位语从句)学生应该学些实用的东西的建议值得考虑。The suggestion that is worth considering is that
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