高考英语总复习(专题攻略)之时态语态 现在完成时1.doc

2017最新高三英语总复习（专题攻略）之时态语态 现在完成时1. 表示过去的动作对现在的影响或结果，常用recently, lately, ever, never, once, before, yet, just等作时间状语。He hasnt heard any news from his son lately. 他最近没有得到他儿子的任何信息。Have you ever been to London? 你曾去过伦敦呢？2. 表示开始于过去某一时刻，一直持续到现在而且还有可能继续下去的动作。常用so far, up till now, since, for a long time, in the past/last few years, these days等作时间状语。So far no life has been found outside the earth. 迄今为止，没有在地球外的星球上发现生命。He has learned 5，000 English words since he went to college. 自从他上大学以来已经学会了5,000英语单词。3. “This/It isthe 序数词time that.”句式中，that后的从句用现在完成时。This is the second time that I have visited the university.这是我第二次参观这所大学。 误区提醒非延续性动词的否定形式可以与表示延续时间的状语连用，即动作不发生的状态是可以持续的。I havent received his letter for almost a month. 我将近一个月都没有收到他的来信。since与for用法比较since用来说明动作起始时间for用来说明动作延续时间长度I have lived here for more than twenty years. 我在这里住了二十多年了。I have lived here since I was born. 我从出生起就住在这里。My aunt has worked in a clinic since 1949. 我姑姑从1949年开始一直在一个小诊所工作。 误区提醒并非有for 作为时间状语的句子都用现在完成时。I worked here for more than twenty years. 我现在已不在这里工作。I have worked here for many years. 现在我仍在这里工作。延续动词与瞬间动词1. 用于完成时的区别延续动词表示经验、经历； 瞬间动词表示行为的结果，不能与表示段的时间状语连用。He has completed the work. 他已经完成了工作。(表结果)Ive known him since then. 从那时开始我知道了他。(表经历)2. 用于till / until从句的差异延续动词用于肯定句，表示做直到； 瞬间动词用于否定句，表示到，才He didnt come back until ten oclock. 直到十点钟他才回来。He slept until ten oclock.他睡到了十点钟。常见考法1. 把考察放在从句中增加难度；2. 和被动语态放在一起考察；3. 根据状语确定时态；4. 用现在完成时的句型。 误区提醒1. 现在完成和一般过去弄混；2. 现在完成时的句型不熟悉；3. 不能根据状语选定现在完成时。小试牛刀1. You dont need to describe her. I _ her several times.A. had met B. have met C. met D. meet2. Im sorry to keep you waiting. Oh, not at all. I _ here only a few minutes.A. have been B. had been C. was D. will be3. Do you know our town at all?