Unit 8 现在完成时
- 格式:ppt
- 大小:2.69 MB
- 文档页数:86
现在完成时一.定义三要素与构成〔has/have done〕1.表示到现在为止已经完成或刚刚完成的动作。
By now, I have remembered 1000 English words.2.一件发生在过去的事情对现在产生影响。
常见时间状语:常和already〔已经〕,yet〔已经〕,just〔刚刚〕,still〔仍旧〕,so far〔到目前为止〕,till now,(直到现在),before〔以前〕,ever〔曾经〕,3 times(三次),in the past/last..years(在过去几年)I have spent all of my money so far.(1)already:〔已经〕用于确定句位置:放于助动词与done 之间或者放在句末(2)yet:疑问句〔已经〕否认句〔还〕位置:常放句尾(3)ever(曾经):疑问/确定位置:助动词与done之间(4)never〔从不〕位置:助动词与done之间【练习】〔1〕——你吃过早餐了吗?—Have you had breakfast ____?——是的,我已经吃过了。
/不,我还没吃。
—Yes,I have ________ had it./No,I haven’t had it ____.〔2〕I have ______ read this book,so I don’t know what it is about.〔3〕—Have you _____ been to the Great Wall? It’s so wonderful and great.—No,I have ______ been there.3.一个动作开头于过去,并持续到现在〔或许还将持续下去〕。
常见时间状语:①for+一段时间“长达/持续了……②since+过去一个时间点,表示“自从……以来〞时间段+ago,表示“从……以前〞+for+时间段从句〔一般过去时〕eg:Mary has been ill for three days.We have been classmates since 2 years ago.【练习】〔1〕我已经住在这里十年了。
语法聚焦:现在完成时(Present Perfect Tense)1) 现在完成时的定义:(1)表示过去发生或已经完成的动作对现在造成的影响或结果。
—It’s so dark. 太黑了。
—Someone has turned off the light. 有人把灯关上了。
(2)表示从过去某一时间开始并一直持续到现在的动作或状态。
常与since+过去的时间点,for+一段时间,so far 等时间状语连用。
I have lived here for ten years.我已经住在这里10年了。
(从10年前开始,持续到现在还住这儿)I have lived here since 2003. 自从2003年我就住在这儿。
(从2003年开始,持续到现在还住这儿)2) 现在完成时的构成及句式转换:助动词have/has + 过去分词①I have finished my homework. (肯定句)②I have not finished my homework. (否定句)③—Have you finished your homework?—Yes, I have. / No, I haven’t, (一般疑问句及肯定、否定回答)现在完成时的标志:①常与just, already, yet, ever, never, before, so far 等连用,强调动作的完成,不强调动作的持续。
Have you ever been to Japan?I have just finished my homework.②for + 时间段;since + 过去的时间点;since + 段时间ago;since + 一般过去时的句子。
They have known each other for five years.Since he was a child, he has lived in England.do __________ —____________ go__________ —___________read ______ —______ see _________ —______know____________ —_____________ eat _______ —_________ forget _________ —_________write________-______ 一、根据句意或汉语提示写词。
Unit 8 Have you read Treasure Island yet?1.重点词汇:page, fiction,pop, fan, million, record, line, success, beauty, technology, treasure, island, ship , sand, land, mark, gun, tool, introduce, belong, forever, abroad...2. 短语归纳:1. full of 满是……的;(有)大量的;(有)丰富的2. hurry up 赶快,急忙(做某事)3. science fiction 科幻小说(或影片等)4. ever since 自从5. one another 互相6. do some research on sth 对……做研究7. see sb do sth 看见某人做某事3. 必背典句:1. -Have you read Little Woman yet? 你读过《小妇人》吗?-No, I haven’t. Have you? 不,我没有。
你有吗?-Yes, I’ve already read it. 是的,我已经读过了。
2. Sarah hasn’t been to Nashville yet, but it is her dream to go there one day.莎拉还没去过纳什维尔,但有一天去那里是她的梦想。
3. She has already read a lot about the place and done some research on it.她已经读了很多关于这个地方的书,并对它做了一些研究。
4.语法知识:1. 现在完成时的构成现在完成时由“助动词have/has+动词的过去分词”构成。
规则动词的过去分词构成与动词过去式相同,如finish-finished;不规则动词需要特殊记忆。