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课件网) Unit1 Grammar 一. 现在完成时概念 （1）表示过去的动作对现在造成的影响或结果， 常和副词already, yet, ever, never, just, before, recently Eg: Li Lei has already finished his homework I can’t find my book, who has taken it. （2）表示从过去发生一直延续到现在的动作 (since, for，how long 引导的时间状语连用。) I have lived in Beijing for three years. We have been here since two years ago. 二. 现在完成时基本结构 1、基本构成：have / has + 动词的过去分词 2、基本句式为：肯定句：主语+have / has +过去分词+其他成分； 否定句：主语+haven’t / hasn’t+过去分词+其他成分 简略回答：Yes, 主语+have / has. No, 主语+haven’t / hasn’t. 三. 背诵过去分词表 P122-P123 现在完成时常用时间状语 just 肯定句 — “刚刚” already 肯定句 — “已经” yet 一般问句 — “已经” 否定句 — “还” （Not yet 还没有） ever 一般问句 — “曾经” never 否定句 — “从不” recently 表示 “最近，近来” since 表示 “自……以来” before 泛指“以前” 次数 twice / many times all one’s life/lives 某人一生（仍旧活着） over/in/during the past/last…years在过去的…年中 so far / up to now/ till now 截止目前，到目前为止 动词填空 1. She _____(realize) the importance of English up to now. 2. Elsa _____ (write) five letters since he _____ (come) here. 3. She _____(teach) in our school for two years, but now she is an office worker. 4._____he _____(study)at this school since two years ago 5. John_____ (be)to the USA a few times. 6.We _____ (not see)that film yet. 7.They _____(learn)1000 words so far. 8. How long _____you _____(stay) at home already has realized has written came Has studied has been haven’t seen have learnt taught have stayed Unit 2 Grammar 辨析have been to/ have been in/ have gone to have/has been to: 指“曾经去过某地”强调已回； have/has gone to: 指“去了某地”强调未回 ； have/has been in: 指“在某地呆了多少时间”, 常与段时间连用。(+地点副词时, 不+介词) 现在完成时态 （1） 用have been to, have been in, have gone to 填空 (1). --I haven’t seen Mike for ten days. --He_____Tokyo. (2). --_____you ever_____London --No, never. (3). –How long _____you _____China —Over ten years. (4). --How many times_____they_____Tibet --Twice,maybe. (5). Where_____you just_____ (6) Professor Li_____this city since 11 years ago. has gone to Have been to have been in have been to have been has been in (二）、现在完成时用法 1. 表达一个开始在过去(未知时间)一直持续到现在的有了一段时间的长动作或者存在的状态。 for+ 一段时间, since + 年/月/日/时刻, since + 一段时间 + ago, since + 过去时从句 , how long for后面通常接_____； since后面可以接_____ 现在完成时态 （2） 段时间 过去的点时间；段时间+ago； 一般过去时的句子； 1. We have lived here ____ 1992. 2. How long have you studied here ___ 5 years . 3. The boy has had a bad cold _____ last night . 4. Mr. Huang has kept the books _____ a week ago . 5.I have taught in the school _____ I came here . 6.We have been friends _____ a long time . Fill in the blanks with “for or since” since For since since since for (三 ... ...
