学英语四级语法考点透析.doc

PAGE 1 PAGE 1 动词的时与体(Tense Aspect) 时（tense）是个语法范畴，它是表示时间区别的动词形式。英语动词只有“现在时”和“过去时”，而没有“将来时”（在英语中，表示“将来”手段多种多样，但没有一种独特的、能与“现在时”和“过去时”平起平坐的专一表示“将来”的动词形式“将来时”）。 体（aspect）也是一个语法范畴，它表示动作或过程在一定时间内处于何种状态的动词形式。英语有进行体(progressive aspect)和完成体(perfective aspect)。进行体是由助动词be的一定形式加主动词的-ing分词构成；完成体由助动词have的一定形式加主动词的-ed分词构成。 现在时和过去时既可以单独使用，也可以和进行体或完成体结合使用，也可以同时与完成体和进行体结合使用。这样，英语的限定动词词组便有8种时、体形式。它们分别是：一般现在时(simple present)、一般过去时(simple past)、现在进行体(present progressive)、过去进行体(past progressive)、现在完成体(present perfective)、过去完成体(past perfective)、现在完成进行体(present perfective progressive)、过去完成进行体(past perfective progressive)。在这一章中，我们单独挑出完成体来加以详述。 1．1 必须使用完成体的结构 1）It (This, This evening, yesterday...) is (was, will be) first (second, third...) time (day, month…)…结构中的分句，要求用完成体。 Is this the first time youve been to Beijing? This was the first time he had been to Beijing. This is the eighth month that I have been out of work.. This was the eighth month that I had been out of work. This is the second time that the goods produced by our factory have been shown in the International Exhibition. This was the second time that the goods produced by our factory had been shown in the International Exhibition. 2）在no sooner…than, hardly/barely/scarcely…when,等的句型中，主句要用过去完成体。 He had no sooner seen me than he left the room. No sooner had he seen me than he left the room. The helicopter had hardly landed when the waiting crowd ran toward it. Scarcely had I seen the lightning when I heard a clap of thunder. 3）将来完成体用来表示在将来某一时间以前已经完成或一直持续的动作。经常与before+将来时间或by+将来时间连用，也可与before或by the time引导的现在时的分句连用。 I will have finished all the work by the time you are back this evening. I am sure he will have left Paris by this time tomorrow. I hope we will have got all the information before you come tomorrow. By the time you get to New York, I _______for London. （2002年1月） 　 A) would be leaving　 　B) am leaving C) have already left 　　　D) shall have left 本题时间状语为by+将来时间，考察将来完成体用法，应选择D)。 By the time he arrives in Beijing,