非谓语形式.docx
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1、非谓语形式非谓语形式 一、概述 to do, doing, done是非限定动词,在句中不能单独作谓语,但它们具有主语、宾语、补语、名词修饰语和状语等功能。它们有进行体、完成体,也能有被动态,但没有“时”的特征,时间关系要借助主句谓语动词的“时”的形式来表示。 名词性的有: 主语、宾语(包括介词宾语)、补语(包括宾补和主补或叫表语), 可由 to do, doing 来充当。 形容词性的有:补语(包括宾补和主补或叫表语)、名词修饰语、状语,可由 to do, doing,doing,done 来充当。 二、解题步骤 成分和句型 主被动 时态 Im glad to have been invit
2、ed to speak (invite, speak) here. 三、分述 1作主语(to do; doing; to be done; being done) 1) 不定式 不定式结构直接在句首担任主语。例如: o be here is a great pleasure. To remember to switch off the electricity is important. To be beaten is a shame. 上述形式一般用得不多,现代英语中常采用先行词it代替不定式,而把不定式后置。例如: Its a great pleasure to be here. Its i
3、mportant to remember to switch off the electricity. Its a shame to be beaten. It took us five hours to get there. It needed hard work to finish the job. It made me happy to find Mary there. 如果是疑问句或感叹句,则只能采用上述形式。例如: Is it a good idea to open a bank account? What was it like to be here? How exciting i
4、t was to fight a snake! 不定式结构作主语通常表示具体的动作间或表示抽象动作,这一点恰与-ing结构相反。(参见-ing部分) 作主语的不定式结构的逻辑主语通常可以在特定的上下文或情景中看出,也可以由1 “for+名词词组”表示。 We sat waiting impatiently for him. We were getting annoyed and even angry with him, but to be without him on our trip home was out of the question. Its a great pleasure for
5、 us to be here this evening. Its a pity for you to have to stay indoors in this weather. Would it be possible for you to remove it? It took six weeks for the travelers to reach the coast. 间或也可以用 for+ there to be表示: Its a pity for there to be any disagreement in the family. 2) 动名词 -ing结构作主语通常有两种形式: 一
6、种形式是把-ing分词结构直接置于主语位置。例如: Seeing is believing. Crossing the Atlantic by plane takes only a few hours nowadays. Being beaten is a shame. 第二种形式是,用先行词it作形式主语,把-ing结构置于句末。这种形式通常用于某些形容词或名词之后。例如: Its interesting planning a holiday. Its nice talking to you, Erin. Its no good crying. -ing 结构作主语的上述两种形式有时可以互换
7、使用,虽然色彩不尽一致,但基本含义无甚区别。比较起来,第一种形式比第二种形式泛指意义更强些。例如: Living in Beijing must be wonderful. It must be wonderful living in Beijing. 作主语的-ing结构与不定式结构在意义上的区别 由上述诸例可以看出,-ing结构作主语通常表示抽象动作,而不定式结构作主语通常表示具体动作。试比较; Its no use crying over spilt milk. He realized that to go on like this was no use. 换句话说,-ing结构作主语通
8、常不与特定的动作执行者联系在一起,而不定式结构作主语往往与特定的动作执行者联系在一起。例如: Lying is wrong. To lie is wrong. 但也不能把这种划分绝对化,在现实生活中也有借用一般以表示特定情景的情况。 作主语用的-ing结构的逻辑主语 -ing结构作主语,也能带有表示出来的逻辑主语。这种逻辑主语不论是名词或代词通常用属格。(关于逻辑主语见p25) 例如: Her going there wont do any harm. 2 Its no use your pretending that you didnt know the rules. -ing结构作主语的其
9、他用法 a)用于“There + be+ no+ -ing结构”结构中。例如: There s no saying what hell be doing next. Theres no telling what he going to do. b)用于布告形式的省略结构中。例如: No smoking! No parking! 2作动词或介词宾语 (1) 不定式 这里作动词宾语的不定式结构都带to。不定式作动词宾语也有两种情况: a 能直接跟带有 to不定式结构作宾语。 b 能跟疑问词+带to不定式形式。 a能直接跟带有 to不定式结构作宾语: 能直接跟带有 to不定式结构作宾语的动词,常见的
10、有:afford, agree, aim, apply, arrange, ask, choose, decide, demand, desire, determine, expect, hope, learn, long, manage, offer, pretend, promise, refuse, seek, swear, want, wish, would like等。 有些既能带to 又能接ing结构作宾语的动词以及两者用法上的区别,在下面叙述。例如: He agreed to smoke no more cigarettes. I have arranged to meet hi
11、m at ten oclock. I expect to be back on Sunday. We can afford to pay for it. 注意以下结构: Id like to have gone (=Id have liked to go) to help him but I was too busy. b能跟+疑问词+to do 形式 能跟有疑问词+to do 形式作宾语的动词,常见的有decide, find out, forget inquire, know, learn, remember, see, settle, thinkunderstand, wonder(to
12、 be curious to know)等。疑问词可以是what, where , who(m), when, how, whether, which等。例如: I dont know where to go / what to do / who(m) to ask / when to stop / how to get there. Remember when to turn. Have you settled where to go? 比较下面句子,看看不定式结构前带不带疑问词时意义是否相同: A: He learned (how) to swim last summer. He taug
13、ht me (how )to operate the machine last week. B: They havent decided to go. They havent decided where to go. C: I forgot to do it. 3 I forgot how to do it. A 组相同,B、C组不同。其中B、C组中的主语也是不定式结构中的逻辑主语。 有些双宾语及物动词,也能用疑问词+带to 不定式结构作直接宾语。这时间接宾语就成了不定式结构的逻辑主语。 Ill tell him what to do. Please inform me where to ge
14、t the tickets. I showed him how to do it. Will you advise me which to buy? Ask your teacher how to pronounce the word. * 如果作宾语用的带to 不定式结构有自己的补语,那就得先用it代表它,而再把不定式结构放到补语后面去。例如: I find it difficult to understand him. Do you consider it wise to stay behind. We thought it wrong not to tell her. *不定式结构一般不
15、可以作介词的宾语,只有在个别场合, 即在含有否定意义且带有介词except的结构中才能这样用。例如: He seldom comes except to look at my pictures. What can I do then except watch them carry you away? He will do anything for you except lend you money. 当but 用作except意义时,后面也可以带不定式结构。例: When the enemy surrounded the house, she had no choice but to swal
16、low the letter. They could do nothing but wait for the doctors to arrive. She can do anything but sing. 上述作介词宾语用的不定式有时带to,有时不带to,也取决于其前是否带动词do, 这与不定式结构作主语补足语时的某些情况相仿。 带疑问词的不定式结构通常也可以用作介词宾语。 The problem of how to get the grand piano through the doorway troubled the workmen. 2. -ing结构 能带有-ing结构作宾语的动词有
17、两类:一类是只能带-ing结构作宾语,另一类是既能带-ing结构作宾语,又能带不定式结构作宾语。 1)只能带-ing结构作宾语的动词 有一类动词只能带-ing分词结构作宾语,不能带不定式结构作宾语。这类动词常见的有:avoid, consider, delay, dislike, encourage, enjoy, escape, excuse, pardon, favour, finish, give up, cannot help, imagine, include, keep(on), dont mind, miss, practise , put off, risk, cannot s
18、tand, suggest, understand, report, appreciate 例如: Mary is considering changing her job. I couldnt risk missing that train. 4 She cant stand being kept waiting. We dislike being often troubled. 上述诸例中-ing结构的确逻辑主语是谁,有些一望而知,也有些需从特定的情景或 上下文中推定。若要明确动作的执行者,也可以在-ing结构前放上以名词或代词表示 的逻辑主语。例如: I dont mind Jane b
19、uying another one. Were considering him/ his going there. 2) 既能带-ing结构又能带不定式结构作宾语的动词 这类动词常见的有:attempt, begin, cannot bear, continue, forget, hate, intend, like, love, plan, prefer, propose, regret, remember, start, try等。 上述这些动词虽然既能带分词-ing结构又能带不定式结构作宾语,但用法不尽相同,主要有以下几种情况: (1) 在begin, start, continue,
20、cannot bear, hate, like, love, prefer, propose, 等动词后,用-ing结构或不定式结构作宾语意义无甚出入。例如: Will you start reading/ to read? 但在下列情况下,通常用不定式: (a) 在would like / love/ prefer/ hate后,表示一个特定的新动作时; Id prefer to walk this morning. (b) 当谓语动词已用于进行体时; Its beginning to rain. (c) 在begin 后,非限定动词由某些状态动词构成时; we began to see w
21、hat he meant. She began to believe his story. (2) 在attempt, intend, plan 等动词后用不定式结构比用 ing分词结构多见。例如: Dont attempt to do /doing it by yourself. (3) 形式不同,意义相同。在need, want 后用ing的主动形式表示被动含义,或用不定式的被动态,意义上并无区别,但用-ing较为普通。例如: The door is cracking. It needs oiling / to be oiled. The room wants cleaning / to
22、be cleaned. The old man needed operating on / to be operated on. require也能这样用,但不及 need ,want普通。例如: His letter requires answering/ to be answered immediately. (4) 在remember, forget, regret后, 用-ing结构或不定式结构意义上有明显区别, ing结构指先于谓语动词的动作,不定式结构后于谓语动词的动作。例如: I remember posting the letter. I remembered to post
23、the letter. I really regret telling him the news. He will probably leave here this afternoon. I regret to say that you have been fired. 5 (5) 在try, cannot help, mean, stop, go on后, 用-ing还是用不定式结构取决于它们本身含义和用法。例如: He tried to write better. He tried writing with a brush. I couldnt help finishing it. I c
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