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1、2022高中英语名词性从句的知识点分析中学英语名词性从句的学问点在句子中起名词作用的句子叫名词性从句 (Noun Clauses)。 名词性从句的功能相当于名词词组, 它在复合句中能担当主语、宾语、表语、同位语、介词宾语等，因此依据它在句中不同的语法功能，名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。引导名词性从句的连词可分为三类：that(不充当从句的任何成分，无词义。只起连接作用，因此往往可以省略。)whether, if(不充当从句的任何成分，均表示是否表明从句内容的不确定性。不行以省略。)as if,as though(均表示似乎，好像)what, whatever,
2、 who, whoever, whom, whose, whichwhen, where, how, whyWho cleaned the blackboard is not known yet.谁擦的黑板还不知道。What he said is not true.他说的不是实话That hell come to see us is really great.他来看我们真是太好啦。I dont know why he is absent.我不知道为什么他不在。The question is whether he will join us next time.问题是下次他是否跟我们一起干。It
3、looks as if it is going to rain. 看上去天要下雨了。1.主语从句由从属连词引导的主语从句：Whether the country should build a nuclear power station is something we must discuss.那个国家是否应当建立核电站That light travels in straight line is known to all .光以直线传播由连接代词引导的主语从句：What we need is more time. 我们所须要的是Whichever book you choose doesnt m
4、atter to me.无论你选哪本书Whoever comes will be welcome.无论谁来由连接副词引导的主语从句：When the plane is to take off hasnt been announced.飞机什么时候起飞Where he has been is still a puzzle.他到过哪儿How much water is flowing can be measured easily.水的流量是多少关于形式主语 itIt + be +形容词+ that-从句It is necessary that 有必要It is important that重要的是
5、It is obvious that很明显It is likely that.很可能It + be + -ed 分词+ that-从句It is believed that人们信任It is known to all that众所周知(留意该句型的变式：It is known to all that the earth goes around the sun.=As is known to all,the earth goes around the sun.=What is known to all is that the earth goes around the sun.)It has b
6、een decided that已确定It + be +名词+ that-从句It is common knowledge that 是常识It is a surprise that令人惊异的是It is a fact that事实是可应用于此句型的名词还有fact / shame / honor / question/pity等。It +不及物动词+ that-分句It appears that好像It happens that碰巧It occurred to me that我突然想起It doesnt matter whether he likes or not.2.表语从句可以接表语从句
7、的连系动词有 be, look, remain, seem等等。The problem is that millions of people die of illnesses caused by smoking.数百万人死于由抽烟引起的疾病The question remains whether we can win the game.我们是否能赢得这次竞赛Thats just what I want. 我想要的This is where our problem lies. 我们的问题所在The difficulty is how we can help smokers kick their
8、habit我们如何帮助吸烟的人留意：表语从句的表现形式除了用从属连词，连接代词和连接副词引导以外，还可以由as, as if，as though引导Things were not as they seemed.It looks as though it is going to rain.好象要下雨了。另外还要留意以下常用的两种结构：The reason whyis that (而不用 because)It ( This, That ) is becauseThe reason why he was dismissed is that he didnt work hard. 他为什么被开除是因为
9、他工作不努力。It is because the tobacco companies want to remain in business.3.同位语从句同位语从句一般由 that, whether 等连词引导，常放在 advice, doubt, fact, hope, idea, information, message, news, order, possibility, problem, question, reason, truth, word, suggestion.等名词的后面，说明该名词的详细内容。The news that he had landed on the moon
10、spread all over the world. 登陆月球.I have no idea when he will be back. 什么时候回来The thought came to him that Mary had probably fallen illMary或许病了He must answer the question whether he agrees to it or not.是否同意4.宾语从句宾语从句可以作及物动词的宾语，介词的宾语，某些形容词的宾语以及非谓语动词的宾语。及物动词后的宾语从句：She will give whoever needs help a warm
11、support任何须要帮助的人I wonder why she refused my invitation她为什么拒绝了我的邀请介词后的宾语从句：I always think of how I can improve my spoken English.我总是在思索如何提高我的口语水平。The teacher is satisfied with what she has said. 老师对他所说的话很满足。某些形容词后的宾语从句：I am sure that you will make greater progress in English through hard work.通过努力工作，你
12、将取得更大的进步We are surprised that he has left without saying goodbye to us.他没有告辞就走了非谓语动词后的宾语从句：Realizing that it was just a difference in custom,the foreigner smiled and said nothingOn being asked whether he had had a good time in Australia, he answered Terrible .关于形式宾语itWe must make it clear that anyon
13、e who breaks the law will be punished.我们必需清晰任何违犯法律的人都将受到惩处。I find it necessary that we should ask him for his advice.我发觉我们有必要征求他的看法。5.名词性从句重难点在名词性从句中，疑问句要用陈述句的语序。例如：Can you make sure _the gold ringA.where Alice had put B.where had Alice putC.where Alice has put D.where has Alice putYou cant imagine
14、_when they received these nice Christmas presents.A.how they were excited B.how excited they wereC.how excited were they D.they were how excited动词 doubt 用在疑问句或否定句中，其后宾语从句常用 that 作连接词;用在确定句中，连接词用 whether 或 if 皆可，而不用that。Do you doubt that he will winI dont doubt that your proposition is wrong .He doub
15、t whether I know it . 否定转移问题。将think, believe, suppose, expect, fancy, guess, imagine等动词后面跟宾语从句时否定转移I dont think I know you.我想我并不相识你。I don t believe he will come.我信任他不回来。We dont expect he will come tonight , will he留意：若谓语动词为hope,宾语从句中的否定词不能转移。I hope you werent ill. 我想你没有生病吧。将seem, appear 等后的从句的否定转移It
16、 doesnt seem that they know where to go. 看来他们不知道往哪去。It doesnt appear that well have a sunny day tomorrow. 看来我们明天不会碰上好天气。主谓一样问题。What he wanted to see was an end to all the armies of the world.What I bought were three English books.语气问题在含有 suggest , order , demand , propose , command , request , insis
17、t, desire, require, advise 等表示要求、吩咐、建议、确定等意义的动词后，that从句常用should+ 动词原形的结构I suggest we (should) set off at once. 我建议我们应当立即动身。在It is +过去分词+that的主语从句中 decided，demanded，desired，insisted，ordered，proposed，suggested，recommended，requested， required等。It is desired that we(should)get everything ready this even
18、ing.在表语从句或同位语从句中The suggestion that the mayor (should) present the prizes was accepted by everyone.在It is(was)+形容词+that从句中要用虚拟语气，即(should +)动词原形，表示建议或不满、惊异等心情。常用于此类的形容词有 essential，important，natural，necessary，possible，strange，等It is necessary that a college student _at least a foreign language.(上海199
19、3)A.masters B.should master C.mastered D.will masterWhat引导名词从句的特别含义:What was once regarded as impossible has now become a reality.(what为所的事，相当于the thing that;all that;everything that)After _ seemed a very long time，I opened my eye and found myself in bed.(M ET93)A.what B.when C.that D.which(what相当于t
20、he time that，表示时间)He is not what he was a few years ago. Who is it that has made Fred what he is now(what表示的人，相当于the person that)What is now the North Sahara Desert was once a civilized world.(what表示的地方，相当于the place that)Our income is now double what it was ten years ago(what表示的数目，相当于the amount /num
21、ber that)不行省略的连词：介词后的连词不行省略Before I came downstairs I had prepared myself very carefully for what I must say.下楼之前，我已经把我要说的仔细打算好了。引导主语从句和同位语从句的连词不行省略That she was chosen made us very happy.她被选上了，我们很兴奋。We heard the news that our team had won. 我们听到消息说我们队赢了。宾语从句有多个that引导时，从其次个及其后面的that不能省略I believe(that)
22、you have done your best and that things will get better.比较：whether 与 if 均为是否的意思。但在下列状况下，whether 不能被if 取代：whether 引导主语从句在句首Whether she comes or not doesnt concern me .她是否来与我无关。引导表语从句His first question was whether she had arrived yet. 他问第一个问题就是她来了没有。引导同位语从句Answer my question whether you are coming.回答我
23、你是否来的问题。whether 从句作介词宾语I worry about whether I hurt her feeling .我担忧是否伤了她的感情。与or not连在一起I dont know whether or not he is going to Japan.我不知道他是否去日本。大部分连接词引导的主语从句都可以置于句末，用it 充当形式主语。例如：It is not important who will go. 谁去，这不重要。It is still unknown which team will win the match. 究竟谁赢呢，形势尚不明朗。点击下页查看更多中学英语的干脆引语和间接引语的学问点 本文来源：网络收集与整理，如有侵权，请联系作者删除，谢谢！第14页 共14页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页第 14 页 共 14 页