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        學(xué)習(xí)定語從句應(yīng)注意的問題

        2009-12-31 00:00:00何忠安
        考試周刊 2009年29期

        定語從句的學(xué)習(xí)是高中英語的重點(diǎn),又是難點(diǎn)。學(xué)生開始學(xué)習(xí)時(shí)會(huì)感到很難,有越學(xué)越難的感覺。筆者結(jié)多年語法教學(xué)實(shí)踐,針對(duì)學(xué)生在學(xué)習(xí)過程中所遇到的問題談?wù)勛约旱目捶?,希望能幫助學(xué)生解決疑惑,從而輕松掌握這一語法重難點(diǎn)。

        一、認(rèn)識(shí)定語的概念。

        定語的定義是:形容詞修飾名詞或代詞的作用叫定語。而表示法可以敘述為:定語由①形容詞;②相當(dāng)于形容詞的詞;③相當(dāng)于形容詞的短語;④相當(dāng)于形容詞的句子充當(dāng)。這個(gè)相當(dāng)于形容詞的句子就是定語從句。

        先通過大量的舉例使學(xué)生從感性和理性二個(gè)角度來認(rèn)識(shí)定語從句和定語的關(guān)系。如:

        ①This is a small box.

        He is a lazy boy.

        ②This is an apple tree.

        There are 55 students in class 1.

        ③The girl in a hat is Lucy.

        Would you like something to eat?

        The boy playing over there is my brother.

        The cup broken by Jim is valuable.

        ④The man who I met on the street is my math teacher.

        The house where we played cards is small.

        二、定語從句和非謂語動(dòng)詞短語作定語時(shí)的轉(zhuǎn)換。

        可以通過定語從句和非謂語動(dòng)詞短語作定語時(shí)的轉(zhuǎn)換,使學(xué)生認(rèn)識(shí)定語從句的表達(dá)方式,這樣能把非謂語動(dòng)詞的學(xué)習(xí)和定語從句的學(xué)習(xí)結(jié)合起來,同時(shí)也能加深對(duì)非謂語動(dòng)詞作定語的學(xué)習(xí)與認(rèn)識(shí)。如:

        1.The girl in a hat is lucy.

        →The girl who is in a hat is lucy.

        2.The boy playing over there is my brother.

        →The boy who is playing over there is my brother.

        3.The cup broken by Jim is valuable.

        →The cup that was broken by Jim is valuable.

        在平時(shí)的課堂教學(xué)中向?qū)W生多講這種升降格的做法及應(yīng)注意的時(shí)態(tài)和語態(tài)問題,不僅能把非謂動(dòng)詞短語作定語與定語從句結(jié)合起來,而且能讓學(xué)生更加深刻地認(rèn)識(shí)定語。

        三、注意定語從句在英漢兩種語序翻譯上的差異。

        英語中定語從句絕大多數(shù)是后置定語,而漢語是前置定語,所以定語從句多譯成主謂結(jié)構(gòu)加“的”的形式,放在被修飾詞的前面。請(qǐng)比較:

        1.The man who I met on the street is my math teacher.(我在街上遇到的那個(gè)人是我的數(shù)學(xué)老師。)

        2.The house where we played cards is small.(我們?cè)诶锩娲蚺频哪菞澐啃?。?/p>

        兩者正好相反的語序加大了定語從句的難度。教學(xué)時(shí)應(yīng)精心設(shè)計(jì)一些練習(xí),加強(qiáng)學(xué)生對(duì)這種差異的認(rèn)識(shí)。

        四、認(rèn)識(shí)引導(dǎo)詞在定語從句中的作用。

        引導(dǎo)定語從句的引導(dǎo)詞不僅引出從句,指代先行詞,連接著主句和從句,而且還在定語從句中充當(dāng)成分。教師要多講引導(dǎo)詞在從句中所擔(dān)當(dāng)?shù)某煞?,培養(yǎng)學(xué)生在學(xué)習(xí)時(shí)把引導(dǎo)詞的各個(gè)作用都考慮到,這樣就能逐步把關(guān)系代詞和關(guān)系副詞的使用區(qū)分開來。請(qǐng)比較下面兩組例子:

        (1)a.I won’t forget the day _______ we met for the first time.

        b.I will never forget the days _______ we spent together on the farm.

        (2)a.This is the school _______ they studied last year.

        b.This is the school _______ they visited last year.

        有些學(xué)生在上述兩組的空白處分別填when,where,這是由于忽略了引導(dǎo)詞在定語從句中所擔(dān)當(dāng)?shù)某煞侄斐傻摹?/p>

        在上述二組中第一個(gè)句子填when和where是正確的,因?yàn)樗鼈冊(cè)趶木渲凶鲿r(shí)間狀語和地點(diǎn)狀語。在上述二組句子中的第二個(gè)句子中,盡管各自的先行詞與第一個(gè)句子的相同,但要用的引導(dǎo)詞是否一樣,就要予以認(rèn)真分析,第一組中第二句中,先行詞作spent的賓語,第二組中的先行詞作visited的賓語,故都應(yīng)填關(guān)系代詞that或which。講解時(shí)學(xué)生難以判斷引導(dǎo)詞在從句中所充當(dāng)?shù)某煞謺r(shí),可要求學(xué)生把復(fù)合句拆分成簡(jiǎn)單句,還原該引導(dǎo)詞所代替的句子成分,這樣就很容易弄清它所作的成分。

        五、介詞 +which 結(jié)構(gòu)中的介詞如何確定。

        它還可以替換when,where,why等關(guān)系副詞。

        1.說明在“介詞+關(guān)系代詞”結(jié)構(gòu)中,介詞的選用取決于先行詞的意義和從句中謂語動(dòng)詞的搭配。例如:

        ①Do you know the boy to whom my mother is talking?(whom前用to,取決于從句中 is talking to的搭配)

        ②This is the house in which we lived last year.(which前用in,取決于先行詞的搭配in the house)

        ③I want to find the pen with which I wrote the letter.(which前用with,取決于先行詞的搭配with the pen)

        注意:含有介詞的短語動(dòng)詞一般不能拆開使用,介詞仍需要放在動(dòng)詞后面,因?yàn)槎陶Z動(dòng)詞屬于固定搭配。例如:

        ④Is this the DVD player which you are looking for?

        look for 是短語動(dòng)詞,不能拆開。

        2.舉例說明可用“介詞+關(guān)系代詞”結(jié)構(gòu)替換關(guān)系副詞when,where,why等。例如:

        ①I still remember the day when I first came to Beijing.

        →I still remember the day on which I first came to Beijing.

        ②The house where he lives needs repairing.

        →The house in which he lives needs repairing.

        →The house (which/that) he lives in needs repairing.

        ③The reason why I’m calling you is to invite you to a party.

        →The reason for which I’m calling you is to invite you to a party.

        →The reason(which/that) I’m calling you for is to invite you to a party.

        六、關(guān)系代詞whose不僅可以指人,而且還可指物,歸納說明關(guān)系代詞whose的用法。

        1.關(guān)系代詞whose既是who的所有格,又是which的所有格,在定語從句中作定語。因此,除指人之外,whose還可以指物。如:

        ①I saw a woman whose bag was stolen.(指人所屬的關(guān)系)

        ②please show me the book whose cover is red.(指物的所屬關(guān)系)

        2.關(guān)系代詞whose指物時(shí),可用“of+which”結(jié)構(gòu)代替。詞序是:限定詞(冠詞、指示代詞、物主代詞等)+n.+“of+which”;也可以是:“of+which”+限定詞n.。如:

        ①I live in the room whose window faces south.

        →I live in the room the window of which faces south.

        →I live in the room of which the window faces south.

        ②Which is car whose owner you know?

        →Which is the car the owner of which you know?

        →Which is the car of which the owner you know?

        七、注意句子中定冠詞的修飾作用,判斷定語從句的關(guān)系代詞,調(diào)整句子結(jié)構(gòu),還原定冠詞的位置。

        先看下面兩個(gè)句子:

        ①Is this shopping mall _______ sells many kinds of mobile phones?

        ②Is this the shopping mall _______ sells many kinds of mobile phones?

        A.whereB.the one thatC.which

        兩個(gè)句子都是疑問句形式,可先將它們變成陳述句形式:

        ①→This shopping mall is _______ sells many kinds of mobile phones.

        ②→This is the shopping mall _______ sells many kinds of mobile phones.

        由此可知,句①缺少先行詞和引導(dǎo)詞,所以要選B。而句②缺少從句中作主語的關(guān)系代詞,因而要選C。假如遇到題干為疑問句、倒裝句、強(qiáng)調(diào)句等特殊語序的選擇題時(shí),最好先將句子還原為陳述語序,再選擇。這樣,可以降低題目難度,有利于把握句子結(jié)構(gòu),明確題意,從而準(zhǔn)確作答。

        再比較下面兩個(gè)句子:

        ③He is the (only) one of the students who _______ Russian in our school.

        A.know B.knows C.knew

        ④Titanic is one of the most wonderful movies that _______ been produced in Hollywood.

        A.haveB.has C.were

        針對(duì)這兩題,學(xué)生往往會(huì)選A。實(shí)際上,由于定冠詞的作用,已使句子的先行詞發(fā)生了變化。句③在one前加了the(only),表示后面的定詞從句修飾的就是先行詞“the(only)one”,而不是“the students”,所以動(dòng)詞用單數(shù)knows;而句④中的one前沒有定冠詞,后面的定語從句修飾的是先行詞movies,所以動(dòng)詞用復(fù)數(shù)have。

        八、句子中逗號(hào)或句號(hào)的作用。

        說明標(biāo)點(diǎn)符號(hào)對(duì)句子結(jié)構(gòu)的影響,試比較以下三個(gè)句子:

        ①He has two sons.One of _______ wants to be an astronaut.

        ②He has two sons,and one of _______ wants to be an astronaut.

        ③He has two sons,one of _______ wants to be an astronaut.

        A.them B.they C.whom D./

        除了在“one of”前面使用的標(biāo)點(diǎn)符號(hào)不同和句②有并列連詞and之外,上述三個(gè)句子完全相同。根據(jù)句意,這三句話的空白處都需填入一詞,否則句意不完整。句①是兩個(gè)完整的簡(jiǎn)單句,句②的連詞and前后是并列分詞,句①、②的空白處應(yīng)是一個(gè)可與one of共同作主語的人稱代詞,因此,都可填them。句③用的盡管也是逗號(hào),但沒有并列連詞and,并且句③的逗號(hào)表示其前后是同一句子的兩個(gè)部分。從句子的結(jié)構(gòu)可知,在該逗號(hào)之后應(yīng)是一個(gè)定語從句。定語從句的引導(dǎo)詞要用關(guān)系代詞,而不能用人稱代詞,所以,句③要填whom。

        九、誤將強(qiáng)調(diào)句型當(dāng)定語從句。

        去掉It is (was)...that的結(jié)構(gòu),還原此結(jié)構(gòu)中間的成分。試比較以下三個(gè)句子:

        ①It was in the kitchen _______ the fire broke out.

        A.whereB.thatC./

        ②Was it because it snowed last night _______ you didn’t come?

        A.thatB.when C./

        ③It is the first American movie _______ I’ve ever seen.

        A./ B.whatC.that

        句①、②、③均填that,但并非都是定語從句。針對(duì)形似定語從句而實(shí)際上并不是定語從句的句子,應(yīng)注意先去掉It is(was)...that這個(gè)結(jié)構(gòu)后,再還原整個(gè)句子。如果句子還原后,在語法和句意上都完整,則屬于強(qiáng)調(diào)句型,而非定語從句。否則,是定語從句。句①、②均可還原,而且語法和意義都完整,所以是強(qiáng)調(diào)句型;句③還原后,結(jié)構(gòu)和意義產(chǎn)生歧義,則是定語從句。

        十、合并成含定語從句的復(fù)合句時(shí),去掉已被替代了的詞語。

        把兩個(gè)或多個(gè)句子合并成含定語從句的復(fù)合句,是弄清定語從句的一種有效方法。但是,做這種練習(xí)時(shí),不少學(xué)生用了關(guān)系代詞或關(guān)系副詞以后,卻沒有去掉已被替代的詞語,造成錯(cuò)句。請(qǐng)比較:

        ①She is a girl.

        I met her at the party.

        →(誤)She is a girl (who/whom) I met her at the party.

        →(正)She is a girl (who/whom) I met at the party.

        ②The hotel wasn’t clean.

        We stayed at the hotel.

        →(誤)The hotel where we stayed at it wasn’t clean.

        →(正)The hotel where we stayed wasn’t clean.

        ③I will never forget the days.

        We spent those days together on the farm.

        →(誤)I will never forget the days that we spent those days together on the farm.

        →(正)I will never forget the days(that/which) we spent together on the farm.

        要解決上述問題,教師可列出正、誤句子;要求學(xué)生觀察、體驗(yàn)、探究等積極主動(dòng)的學(xué)習(xí),培養(yǎng)他們自我糾錯(cuò)的能力。只有這樣,才能突破定語從句這個(gè)重點(diǎn)和難點(diǎn)。

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