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不定式語態選擇新思路

2021-09-13 02:34
閱讀與作文(英語高中版) 2021年9期
關鍵詞:動賓執行者語態

不定式仍具有動詞特性,有語態形式,分主動和被動兩種,是動詞語態考查的最高境界。究竟該選用何種形式一直困擾著廣大考生。不定式語態的選擇最終取決于不定式與修飾(作用)對象之間的關系以及不定式動作的實際執行者,二者缺一不可?,F探討如下:

一、分析不定式與修飾(作用)對象之間的關系

不定式與某一對象存在不同關系,依據關系選擇不定式語態是解決問題的突破口。包括:

動賓關系

某一名詞是不定式作用對象,做不定式的邏輯賓語,二者構成動賓關系,但不定式語態的選擇還必須參考不定式動作實際執行者。若不定式為不及物動詞,所修飾的名詞如果是地點、工具等,須加介詞。介詞的選用取決于功用和意義需要。

【例1】Tom asked the candy makers if they could make the chocolate easier____into small pieces.

A. break B. breaking

C. broken D. to break

分析:D。不定式to break與賓語the chocolate之間存在動賓關系。為便于理解,the chocolate easier to break into small pieces可解釋為the chocolate which Tom can break more easily into small pieces,the chocolate是break的賓語,構成動賓關系,但Tom是其邏輯主語,與break構成主動關系。

主謂關系

被修飾的名詞或代詞實際上是不定式的邏輯主語,是不定式動作的執行者,二者構成主謂關系,動詞不定式選擇主動形式。

【例2】—The last one____pays the meal.

—Agreed!

A. arrived B. arrives

C. to arrive D. arriving

分析:C。不定式to arrive與主語the last one之間為主謂關系。為便于理解,“the last one to arrive”可解釋為“the last one who arrives”,the last one是arrive的主語,構成主謂關系。不定式邏輯主語同時也是句子主語,是不定式動作實際執行者。

同位關系

不定式與所修飾的名詞指的是同一事物,說明或解釋所修飾名詞的具體內容,動詞不定式選擇主動形式。

【例3】Volunteering gives you a chance____lives, including your own.

A. change B. changing

C. changed D. to change

分析:D。不定式to change lives與修飾語a chance之間為同位關系。為便于理解,a chance to change lives可解釋為a chance that you can change lives.不定式to change lives對修飾語a chance解釋說明,二者構成同位關系。類似地,the attempt/ability to do均是此種用法。

動狀關系

被修飾的名詞way/time/place實際上表示動詞不定式動作的方式、時間、地點等,動詞不定式與這些名詞通過介詞才能發生意義關聯,不定式選擇主動形式。若動詞不及物,介詞可以省略。

【例4】This is the only way we can imagine____ the overuse of water in students bathrooms.

A. reducing B. to reduce

C. reduced D. reduce

分析:B。不定式to reduce與the only way沒有語義聯系,需加上介詞in,即構成in the way搭配,做方式狀語。為便于理解,the only way to reduce the over use of water可解釋為the only way in which we can reduce the over use of water或in the way we can reduce the over use of water。 顯然,修飾語the only way做動詞reduce的狀語,二者構成動狀關系。

二、判斷不定式動作實際執行者

正如前文所述,不定式與某一對象存在主謂、同位、動狀關系時,不定式選擇主動形式;與某一對象存在動賓關系時不定式語態的選擇取決于不定式動作的實際執行者。因此,判斷不定式動作的實際執行者是解決問題的核心。包括以下情況:

1.執行者在句中

不定式與作用或修飾對象構成動賓關系,但不定式動作實際執行主體在句中可以找到,且與不定式構成主謂關系,不定式選擇主動形式,反之則選擇被動形式。不定式的邏輯主語可以分以下幾種情況:

(1)句子的主語是不定式的邏輯主語

【例5】l have a lot of readings____before the end of this term.

A. completing B. to complete

C. completed D. being completed

分析:B。不定式to complete雖與被修飾名詞a lot of readings構成動賓關系,但其實施者依然是句子主語I,可理解為I will complete a lot of readings,故選用主動語態。再如:

With a lot of difficult problems to settle, the newly-elected president is having a hard time.(可解釋為the newly-elected president will settle a lot of difficult problems)

(2)句子的賓語是不定式的邏輯主語

【例6】Let those in need____that we will go all out to help them.

A. to understand B. understand

C. understanding D. understood

分析:B。動詞不定式(to)understand和作用對象從句(that we will go all out to help them)存在動賓關系,不定式動作的執行者不是句子主語we(被省略)而是賓語those??衫斫鉃閠hose in need will understand that we will go aU out to help them,故選用主動語態。再如:My advisor encouraged me to take a summer course to improve my writing skills.(可解釋為I will take a summer course to improve my writing skills)

(3)不定式的邏輯主語由介詞for(with)引出。分如下兩種情況:

①在“主語+系動詞+形容詞+to do”結構中

【例7】Its important for the figures___regularly,

A. to be updated B. to have been updated

C. to update D. to have updated

分析:A。不定式to update的邏輯主語the figures由介詞for引出,是不定式to update動作的承受者,存在動賓關系,可這樣理解the figures are to be updated,故選擇被動式。試比較:Its important (for people) to update the figures regularly.(可解釋為people will update the figures regularly)

②在“動詞+賓語+形容詞(補語)+to do”結構中

【例8】Nowadays people sometimes separate their waste to make it easier for it____.

A. reusing B. reused

C. reuses D. to be reused

分析:D。不定式to reuse與其作用對象waste存在動賓關系,但不定式的邏輯主語通過介詞for引出,不定式邏輯主語不再是句子主語people而是waste。垃圾和回收利用存在被動關系,故選擇被動式。試比較:Nowadays people sometimes separate their waste to make it easier (for people) to reuse.

2.執行者在句外

為便于弄清楚不定式動作實際執行者,可以加介詞by/for引出主語或改換成對應句子來幫助分析。

(1)添加by引出主語

句子主語或賓語是不定式動作的承受者,或不定式與修飾對象構成動賓關系,且不定式動作實際執行者在句中找不到,不定式只能選擇被動形式。為便于理解,可依據主語、不定式和修飾對象三者邏輯關系判斷不定式動作實施者,自行添加by引出即可。

【例9】The airport____next year will help promote tourism in this area.

A. being completed B. to be completed

C. completed D. having been completed

分析:B。不定式to complete與修飾語the airport構成動賓關系,但根據句意,句子主語the airport不是不定式to complete動作實施者。機場修建應有施工人員去實施,故選擇被動式。為便于梳理關系,the one to be completed可這樣理解為the one to be completed (by workers)。

(2)添加for引出主語

①在“be+to blame/seek/let”結構中

在此結構中,不定式與其作用對象存在動賓關系,不定式使用主動形式。為便于理解,可以將“be+to blame/seek/let”解釋為“be+for sb. to blame/seek/let”。

【例10】I feel it is your husband who____for the spoiled child.

A. is to blame B. is going to blame

C. is to be blamed D. should blame

分析:A。不定式to blame與其作用對象who之間存在動賓關系,但I feel it is your husband who is to blame for the spoiled child可這樣理解為I feel it is your husband who is (for you) to blame for the spoiled child,故選擇主動形式。再如:Mr Green stood up in defence of the 16-year-old boy,saying that he was not the one (for us) to blame.

②在“主語+系動詞+形容詞+to do”或“動詞+賓語+形容詞(補語)+to do”結構中

在此結構中,不定式與主語或賓語存在動賓關系,但做補語的形容詞用來描述主語或賓語屬性、特征、品質等。為便于理解不定式究竟該選用主動還是被動形式,可以在不定式前加上介詞for引出邏輯主語。

【例11】This machine is very easy____. Anybody can learn to use it in a few minutes.

A. operating B. to be operating

C. operated D. to operate

分析:D。不定式to operate與其作用對象this machine之間存在動賓關系,但This machine is very easy to operate可這樣理解為This machine is very easy (for anybody) to operate,故選擇主動形式。不定式的邏輯主語不在含不定式句中而是在另一句中,須自行添加for引出。類似地,再如:The difference in thickness and weight from the earlier version makes the iPad 2 more comfortable (for people) to hold.

(3)轉化成句子識別主語

在“關聯詞+to do”結構中,不定式與其作用對象若存在動賓關系,不定式依然使用主動形式。為便于理解,可以將“關聯詞+to do”解釋為“關聯詞+sb.will/can+do”。

【例12】I have worked with children before, so I know what____in my job.

A. expected B. to expect

C. to be expecting D. expects

分析:B。不定式to expect與其作用對象what存在動賓關系,但I know what to expect in my job可這樣理解為I know what I will expect in my job,故選擇主動形式。再如:The mother didnt know who to blame(who she would blame/who was to blame) for the broken glass as it happened while she was out.

3.執行者不明確

當不定式動作執行者有不同理解時,不定式主被動形式不同,意義也不同。做題時務必依據題干揣摩動作實施者是說話者本人還是他人。主體為說話者時(sth.is done by yourself)選擇主動形式,主體為他人時(sth. is done by others)選擇被動形式。

【例13】If there is a lot of work____, Im happy to just keep on until it is finished.

A. to do B. to be doing

C. done D. doing

分析:A。動詞不定式to do與修飾語a lot of work存在動賓關系,但不定式動作實施者仍然是句子主語I,故選擇主動形式。試比較:

(1)There is a lot of work (for me) to do(或by myself), so I cant spare time to visit my parents.(有很多活要干,我抽不出空去看望父母親。)

(2) There is a lot of work to be done (by workers), so l have to hire more workers to help.(活很多,我得再多招幾位工人幫忙。)

總之,不定式語態的選擇具有挑戰性,要求具備極強的分析問題和解決問題能力。做題時遵循兩條標準,即首先辨關系,其次找主語(為便于發現,可加介詞引出或改換成句子),問題便能迎刃而解,事半功倍。

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