【初二英语】语法试讲ppt模版课件.pptVIP

e.g. 我已经乘火车到达. I have just arrived by train. e.g. 我还没有做完作业呢。 I haven’t finished / done my homework yet. e.g. Eric从来没去过上海。 Eric has never been to Shanghai. 现在完成时的基本句型： 肯定式：主语 + have/has + 过去分词 疑问式：Have/Has + 主语 + 过去分词? 否定式: 主语 + have/has + not + 过去分词. 现在完成时: 表示过去发生而现在有结果或影响的动作. 结构: have / has + p. p(过去分词) 一、动词过去式、过去分词的构成 1. regular form 规则变化 （1）finish—finished--finished play--played--played （2）live--lived—lived move--moved--moved （3）carry--carried--carried try-tried-tried ( 去y改i加ed) （4）stop--stopped—stopped chat—chatted--chatted 2. irregular form 不规则变化 (1) AAA型：cut--cut--cut read--read--read (2) ABB型：feel--felt--felt make--made--made (3) ABC型：forget-forgot-forgotten see--saw--seen (4) ABA型：come--came—come run--ran—run (5) AAB型：beat--beat--beaten 1. for + 时间段 Daniel has been there for 8 months. I __________ (be) here for 5 years. 2. since(自从) + 时间点 Rex has been very tall since he was 13 years old. I ________________ (know) Amy since two years ago. * * Let’s see some examples. 做笔记！ They have already arrived at the airport. 2)They haven’t arrived at the airport yet. 4)She has lived in Beijing since 2000. 5)We have stayed in Shanghai for a long time already, yet 在现在完成时中 already 用于肯定句，并且置于居中或者句尾，译为 已经….. ? Have you eaten the apples yet? (疑问句) “yet” 用于句尾. ? Yes, I’ve already eaten the apples. (肯定句) ‘already’ 用于句中或句尾. ? No, I haven’t eaten the apples yet. (否定句) or Yes, I’ve eaten the apples already. (肯定句) yet 用于否定或疑问句，并且通常用于句尾， 译为 还….. 1.Have you locked the door____? A. already B. yet C. ever D. never 2.He’s ____ seen the film Avatar. A. already B. yet C. ever 3. David hasn’t come to Window English . A. yet B. already C. ever D. never have been have known 选用for和since填空: 1.We haven’t seen each other ______ a long time. 2.His father has been in the Party ______ 10 years ago. 3.The film has been on ______ 20 minutes. 4.Mr Harry has wo