2019-2020年高三英語大一輪復習講義 語法知識 專題九 名詞性從句 新人教版.doc
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2019-2020年高三英語大一輪復習講義 語法知識 專題九 名詞性從句 新人教版 一、名詞性從句的連接詞 1.從屬連詞that,whether和if (1)that,whether,if在從句中不充當任何成分,只起到連接從句的功能。that沒有實際意義,而whether,if意為“是否”。 (2)whether與if的用法比較 二者均可作“是否”講,都可以引導名詞性從句,引導賓語從句時可以互換。 I don’t know whether/if he’ll attend the meeting. 在下列情況下,常用whether,不用if。 ①whether引導從句可以放于句首。 Whether he es or not makes no difference. ②whether可引導表語從句和同位語從句,if不可。 The question is whether it is worth trying. The question whether he should join the team has not been decided upon. ③whether可以作介詞賓語,if則不可。 I haven’t settled the problem of whether I’ll lend him the money. ④whether后可以加不定式,if不可。 He didn’t know whether to get married or to wait. ⑤可以用whether...or引導讓步狀語從句,意為“無論,不論”,if則不可。 Whether it rains or snows,I don’t care. 2.連接代詞 引導名詞性從句的連接代詞有:who,whom,whose,what,which,whatever,whichever,whoever。連接代詞在句中既起連接作用,同時又充當主語、賓語、定語、表語等成分。 3.連接副詞 引導名詞性從句的連接副詞有:when,where,how,why。連接副詞在句中既是連接詞,又作狀語。 二、主語從句 1.主語從句在復合句中充當主語,大多數(shù)主語從句都可以用it作形式主語而把主語從句置于句尾。 2.that引導主語從句時可用it作形式主語,that不可??;what引導的主語從句表示“……的東西”時,一般不用it作形式主語;whatever,whoever,whichever一般也不用it作形式主語。 That she will succeed is certain. →It is certain that she will succeed. What he needs is more experience. (1)It+系動詞+形容詞(necessary,right,likely,unlikely,wrong,important,certain,clear,obvious,strange,normal等)+that從句 It is certain that most of the farmers have brought in more money by all means. (2)It+be+名詞(短語)(a pity,a shame,good news,a fact,an honour,a wonder,no wonder等)+that從句 It’s no wonder that you’ve achieved so much success. (3)It+be+過去分詞(said,told,heard,reported,decided,suggested,advised,ordered,remembered,thought,considered,wellknown,announced等)+that從句 It is said that the professor has already succeeded in carrying out the experiment. (4)It+特殊動詞(seem,appear,happen,matter)+that從句 It happened to me that I had been away when he called. 注意:(1)在“It is necessary,important,strange,natural+that從句”結構中,從句常用“(should+)動詞原形”形式。 (2)在“It+be+suggested,advised,ordered,requested,insisted,required+that從句”結構中,that從句應用“(should+)動詞原形”。 三、賓語從句 1.動詞的賓語從句 (1)大多數(shù)動詞(hope,tell,say等)可以帶賓語從句。 We all expect that they will win,for members of their team are stronger. I don’t think you are right. I don’t suppose he cares,does he? (2)動詞find,feel,think,consider,make,believe等后有賓語補足語時,則需要it作形式賓語而將that賓語從句后置。 I think it necessary that we take plenty of boiled water every day. (3)有些動詞帶賓語從句時習慣上需要在賓語從句前加it。這類動詞(詞組)有hate,enjoy,like,love,dislike,see to等。 I hate it when they talk with their mouths full. 2.一般情況下介詞后只能用wh類連接詞引導賓語從句。 We are talking about whether we admit students into our club. 注意:(1)where引導的從句有時也可用作介詞的賓語。 We could see the temple quite clearly from where we lived. (2)that引導的從句作介詞的賓語是很少有的,只有在except,in,but等介詞后偶爾可能用到。 Your position is quite good except that the organization is a bit loose. 3.sure,certain,glad,pleased,happy,surprised等表示“情感”的形容詞后也可帶賓語從句。 I’m sure that they will make it in spite of the terrible weather. 四、表語從句 1.主句的主語是idea,advice,suggestion,order,request,requirement等名詞時,表語從句的謂語應用虛擬語氣,即“(should+)動詞原形”的形式。 His suggestion is that we (should) change our course. 2.主語為名詞reason時,表語從句中的連接詞要用that,而不用why或because。 The reason for such a serious accident is that the driver was too careless and drank too much. 3.because,as if,as though,as,like等連接詞也可引導表語從句。 He has heart disease.That is because he has been smoking too much. 五、同位語從句 同位語從句是用以解釋說明某一名詞內容和實質的從句。 1.能接同位語從句的名詞有:belief,fact,hope,idea,doubt,news,conclusion,suggestion,problem,order,answer,decision,explanation,information,thought等。 2.同位語從句一般用that引導,但也可以用連接代詞(what,which,who)、連接副詞(when,where,why,how)或whether引導。 I have no idea what has happened to him. 3.有時同位語從句不緊跟在它所說明的某個名詞后,而是被別的詞隔開。 The story goes that William Tell did kill the king with that sword. 六、名詞性從句的幾個難點 1.that通常不可省略的四種情況: (1)引導主語從句,that置于句首時不可省略。 That he failed in the exam made his parents disappointed. (2)當一個句子有兩個或多個并列的賓語從句時,引導第二個和以后幾個從句的that不可省略。 I wished (that) we could go sighting in Hangzhou this summer and that we could buy some books on our way back in Shanghai. (3)在由it作形式賓語,that引導的賓語從句中,that也不可省略。 He has made it clear that he wouldn’t agree to the plan. (4)引導表語從句和同位語從句時,that也不可省略。 2.what與that的區(qū)別: what在從句中充當一定成分并且具有特定含義“……的人(地方、東西)等”;that只起引導作用,在主語從句中不充當任何成分并且也沒有含義。 What he said was true. That he came late made the teacher angry. 技巧1 從句類型判斷法 名詞性從句分為主語從句、賓語從句、表語從句和同位語從句。從句類型不同,引導從句的連詞也不盡相同,確定了從句類型,也就確定了引導該類從句的連詞。判斷的方法就是根據(jù)從句在整個句子中的位置。 What he said is wrong.他所說的話是錯的。(從句在主語位置,為主語從句) Check that all the switches are turned off.檢查一下所有的開關已關好。(從句在動詞后,為賓語從句) What I was uncertain about was whether we could overe the difficulties all by ourselves.我不敢肯定的是我們自己能不能戰(zhàn)勝這些困難。(whether從句在was后,為表語從句) I have no idea when he will return.我不知道他什么時候回來。(從句在抽象名詞后,對名詞解釋說明,為同位語從句) [考題印證] Cindy shut the door heavily and burst into tears.No one in the office knew________she was so angry. (xx湖南,35) A.where B.whether C.that D.why 答案 D 解析 句意為:Cindy用力關上門并且大哭了起來,辦公室里沒人知道她為什么那么生氣。從句在動詞know后,故為賓語從句,且從句中缺少狀語,根據(jù)句意分析,D項正確。 技巧2 從句成分分析法 引導名詞性從句的連接詞分三類:第一類為that,在從句中不擔任成分,本身無意義;第二類whether/if類,本身有意義,在從句中不擔任成分;第三類為wh類及how, as if, because等,本身有意義,在從句中擔任成分。what, which, who, whom, whose等在從句中作主語、賓語、表語、定語;when, where, why, how, because等在從句中作狀語。通過分析從句,可以明了從句是否缺成分,缺什么成分,從而確定連詞的種類。 [考題印證] As a new graduate,he doesn’t know________it takes to start a business here.(xx天津,14) A.how B.what C.when D.which 答案 B 解析 句意為:作為一名新的畢業(yè)生,他不知道在這里創(chuàng)業(yè)需要些什么。what在賓語從句中充當takes的賓語。本題可采用句式還原法解題,只要把賓語從句還原成It takes...to do sth.句式,即可輕松得出答案。 技巧3 關注特殊形式的名詞性從句 感嘆詞引導的賓語從句和because, as if 引導的表語從句。 [考題印證] Parents are taught to understand________important education is to their children’s future. A.that B. how C.such D.so 答案 B 解析 動詞understand后面是由how引導的感嘆句作賓語。 1.—I don’t know ________ makes her different from others. —Confidence,I think. A.how is it that B.how it is that C.what is it that D.what it is that 答案 D 解析 考查賓語從句及強調句型。此處know后為賓語從句,賓語從句中有強調句型。句意為:——我不知道究竟是什么使她與眾不同?!艺J為是自信。 2.The old man was so angry and spoke so fast that none of his children understood ________ he said meant. A.that that B.what what C.what D.that 答案 B 解析 第一個what作meant的賓語;第二個what作said的賓語。 3.Is it,in your opinion,possible ________ new measures will be taken to improve the terrible traffic? A.whether B.what C.when D.that 答案 D 解析 句意為:在你看來,采取新的措施改善糟糕的交通是可能的嗎?it為形式主語,后面的從句為真正的主語,且從句中不缺少句子成分,故D項正確。 4.Golf is rapidly being more popular.Near some towns and cities new courses are being built in________. A.what is farmland B.what farmland is C.what farmland was D.what was farmland 答案 D 解析 考查賓語從句的連接詞。此處what was farmland作介詞in的賓語。句意為:高爾夫球很快變得受歡迎。附近城鎮(zhèn)新的高爾夫球場正在曾經(jīng)是農田的地方建設。 5.He thought________mattered most in improving spoken English was enough confidence and practice. A.why B.what C.which D.that 答案 B 解析 考查賓語從句的連接詞。此處what作賓語從句的主語。句意為:他認為提高英語口語的關鍵是有足夠的信心和練習。 6.It seems ________ the pany Dibai World is unlikely to survive in this serious financial crisis. A.like if B.because of C.as if D.for that 答案 C 解析 考查名詞性從句。句意為:看起來好像迪拜世界集團不太可能在這次嚴重的經(jīng)濟危機中生存下來。seem as if+從句,“看起來好像……”。 7.The world’s population hit 7 billion on Monday among celebrations and concerns about ________ the growing number of people will affect the earth’s resources. A.why B.how C.whether D.what 答案 B 解析 考查名詞性從句中引導詞的選擇。分析句子可知空格處引導賓語從句,從句已為完整句子,考慮連接副詞,根據(jù)句意應選B。 8.We are very proud of ________ you have acplished so far.You should be proud too. A.what B.that C.which D.where 答案 A 解析 空格引導的是of的賓語從句且在從句中作have acplished的賓語,故選A。 9.________ some people regard as a drawback is seen as a plus by many others. A.Whether B.What C.That D.How 答案 B 解析 句意為:一些人眼中的缺點是別人眼中的優(yōu)點。what引導主語從句并在從句中作動詞regard的賓語;that引導主語從句不作成分。 10.As far as I can see,________ is no possibility ________ he will win the tennis match this time. A.it;that B.there;that C.it;whether D.there;whether 答案 B 解析 句意為:據(jù)我所知,這次他要贏得這場網(wǎng)球賽是不可能的。There is no need/possibility/doubt that...是固定句型,其中that引導的是同位語從句。 11.I was close to being killed the other day.A car passed me at ________ I thought was a dangerous speed. A.as B.which C.that D.what 答案 D 解析 此句是what引導的賓語從句。what在從句中作主語,I thought是插入語。介詞后不跟that引導的賓語從句,C項錯誤;句中無先行詞,不是定語從句,B項錯誤。 12.—I am worried about ________ she has had an operation ________ her throat. —You have to see her as soon as possible. A.that;in B.if;in C.whether;on D.where;on 答案 C 解析 首句句意為:我擔心她是否對喉嚨動了手術。介詞后不能接if引導的賓語從句;“對……動手術”,用have an operation on...。 13.We’ve offered her the job,but I don’t know ________ she’ll accept it.(2011山東,33) A.where B.what C.whether D.which 答案 C 解析 句意為:我們給她提供了那份工作,但我不知道她是否會接受。where哪兒;what什么;whether是否;which哪一個。只有whether符合句意,故選C。 14.The villagers have already known________we’ll do is to rebuild the bridge.(2011江西,26) A.this B.that C.what D.which 答案 C 解析 句意為:村民們已經(jīng)知道我們要做的事是重修這座橋。分析句子結構可知,known后的賓語從句中含有一個主語從句,該從句缺少引導詞并且從句中do缺少賓語,故用what,意為“……的事情”。this不能引導從句;that在名詞性從句中不作句子成分;which強調哪一個,不符合句意。 15.The rescue team are considering________they can do more for the people suffering from the storm. A.what B.whatever C.if D.how 答案 D 解析 考查賓語從句。從句中主語、謂語和賓語齊全,設空處只缺狀語,應用how來引導賓語從句。- 配套講稿:
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