标题 | 小议动词不定式的特殊用法 |
范文 | 封全龙 我们在平时学习和复习备考时,除了理解动词不定式的基本常识和一般用法,还要掌握其特殊的用法。 一、不定式的否定式 动词不定式的否定形式,通常是在不定式符号的前面加上否定副词not或never等。如果是不带to的不定式,就直接在动词原形前面加上否定副词not或never等。 [例1]She pretended not _____(see)me when I passed by. 答案:to see 分析:因pretend to do sth可知填不定式,句中not to see是to see的否定形式。 [例2]Mr. Smith warned her daughter never ______(drive) after drinking. 答案:to drive 分析:由warn sb to do sth可知填不定式,句中never to drive是to drive的否定式。 [例3]Dinosaurs have completely diet out on the earth, never ______(find)again. 答案:to be found 分析:表示不如人意的结果用不定式,因Dinosaurs与find是被动关系,用不定式的被动式;句中never to be found是to be found的否定式。 [例4]They boys mother made him not ______(play) computer games at home all day long. 答案:play 分析:由make sb do sth可知填省略to的不定式,即play。句中not play是play的否定式。 二、不定式的省略 不定时的省略主要分为两种情况,一是不定式符号to后的动词部分的省略;二是不定式符号to的省略。 1. 不定式符号to后的动词部分的省略。 (1)当不定式在like, love, care, hope, wish, expect, refuse, mean, try, prefer等后作宾语时,有时为了避免与前文重复,可以把不定式中的动词部分省略,只保留不定式符号to。 [例5]—Would you like to go camping with us on the coming Sunday? —Yes, Id like ______. 答案:to 分析:本句为省略句,补全句子为:Id like to go camping with you on the coming Sunday。 (2)当不定式在ask, tell, advise, allow, permit等后作宾补时,为了避免与前文重复,可以把不定式中的动词部分省略,只保留不定式符号to。 [例6]She wanted to come to our party but her parents didnt allow her______. 答案:to 分析:本句为省略句,补全句子为:but her parents didnt allow her to come to our party。 [例7]They boy wanted to ride in the street, but his mother told him not ______. 答案:to 分析:不定式not to是not to ride in the street的省略形式。 (3)當不定式在happy, glad, eager, anxious, able, willing, ready等形容词后作状语时,为了避免重复,可以把不定式中的动词部分省略,只保留不定式符号to。 [例8]I wanted to get in touch with her but I wasnt able ______. 答案:to 分析:本句为省略句,补全句子为:but I wasnt able to get in touch with her。 (4)当不定式符号to后的动词原形是have或be时,在省略句中通常要保留动词have或be,其后面的成分仍然可省略。 [例9]Mary is a fine singer as her mother used ______(be). 答案:to be 分析:本句为省略句,补全句子为:as her mother used to be a fine singer。 [例10]He did not come to my wedding party, but he ought ______(have). 答案:to have 分析:本句为省略句,补全句子为:but he ought to have come。 2. 不定式符号to的省略。 (1)当两个或多个不定式并列(常有and, or, but, than等并列连词)使用时,通常只在第一个不定式前加to,而后面的不定式之前的to常可以省略。 [例11]Shed like to take off her coat and ______(have) a rest. 答案:have 分析:and前后是两个并列的动词不定式,后面的不定式可以省略to。 但是如果并列的前后不定式具有對比含义时,第二个不定式to也不能省略。 [例12]I havent decided to stay at home or ______(travel) to Beijing this Summer holiday. 答案:to travel 分析:to stay at home与to travel to Beijing这两个并列的动词不定式有明显的对比含义,因此,第二个不定式to不能省略。 (2)在个别情况下,有的动词后面的动词不定式符号to可以省略,也可以保留。 [例13]She may go hiking with us this weekend if she likes______. 答案:(to) 分析:条件状语从句是省略句,句中的动词like后不定式符号to可以省略,也可以保留。补全句子为if she likes to go hiking with us this weekend。 [例14]What you have to do first is ______(clean) the classroom. 答案:(to)clean 分析:不定式作表语,用来解释主语中do的精确含义时,动词不定式符号to可以省略,也可以保留。 (3)动词不定式在感官动词feel, see, notice, watch, find, hear, listen to, observe和使役动词have, make后作宾语补足语时,动词不定式符号to要省略,如果这些动词用于被动语态,其后的动词不定式符号to就不能省略。 [例15]We often see the children ______(play) on the ground in our school. 答案:play 分析:由see sb do sth可知,填 play。 [例16]The boss was so cruel that he often made the boy ______(work)for twelve hours a day. 答案:work 分析:由make sb. do sth.可知,动词不定式作使役动词make的宾语补足语时,动词不定式符号to要省略。故填 work。 [例17]The boy felt very poor because he was made ______(work) for twelve hours a day by his boss. 答案:to work 分析:由be made to do sth可知,填to work。 三、there to be与 there being形式的用法区别 我们可以从以下三个方面对there to be和there being进行比较并加以区别。 1. 作介词的补足成分。 如果在for后,通常用there to be;若是在其它介词后,则要用there being。 [例18]It was unusual for there ______(be)so few people in the streets this evening. 答案:to be 分析:由there be前面的介词 for可知,应是there to be。 [例19]John was relying on there ______(be)another opportunity. 答案:being 分析:因there be前是介词on而不是for,应用there being。 2. 在expect, mean, want, like, prefer, hate, consider, intend等后作宾语时,通常用there to be结构。 [例20]They expect there ______(be)no argument about this. 答案:to be 分析:由there be前面的动词 expect可知,应是there to be。 [例21]I shall prefer there ______(be)a football game on the weekend. 答案:to be 分析:由there be前面的动词 prefer可知,应是there to be。 3. 作主语和状语,通常用there being结构。 [例22] There ______(be) a bus stop so near the house is a great advantage. 答案:being 分析:当there be结构作主语时,要用there being形式。 [例23] There ______(be)nothing else to do, we went home. 答案:being 分析:当there be结构作状语时,要用there being形式。 责任编辑? ?蒋小青 |
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